Immediate effects of form-class constraints on spoken word recognition

PubMed Central

Magnuson, James S.; Tanenhaus, Michael K.; Aslin, Richard N.

2008-01-01

In many domains of cognitive processing there is strong support for bottom-up priority and delayed top-down (contextual) integration. We ask whether this applies to supra-lexical context that could potentially constrain lexical access. Previous findings of early context integration in word recognition have typically used constraints that can be linked to pair-wise conceptual relations between words. Using an artificial lexicon, we found immediate integration of syntactic expectations based on pragmatic constraints linked to syntactic categories rather than words: phonologically similar “nouns” and “adjectives” did not compete when a combination of syntactic and visual information strongly predicted form class. These results suggest that predictive context is integrated continuously, and that previous findings supporting delayed context integration stem from weak contexts rather than delayed integration. PMID:18675408

Reciprocal Family, Friendship and Church Support Networks of African Americans: Findings from the National Survey of American Life.

PubMed

Taylor, Robert Joseph; Mouzon, Dawne M; Nguyen, Ann W; Chatters, Linda M

2016-12-01

This study examined reciprocal support networks involving extended family, friends and church members among African Americans. Our analysis examined specific patterns of reciprocal support (i.e., received only, gave only, both gave and received, neither gave or received), as well as network characteristics (i.e., contact and subjective closeness) as correlates of reciprocal support. The analysis is based on the African American sub-sample of the National Survey of American Life (NSAL). Overall, our findings indicate that African Americans are very involved in reciprocal support networks with their extended family, friends and church members. Respondents were most extensively involved in reciprocal supports with extended family members, followed closely by friends and church networks. Network characteristics (i.e., contact and subjective closeness) were significantly and consistently associated with involvement with reciprocal support exchanges for all three networks. These and other findings are discussed in detail. This study complements previous work on the complementary roles of family, friend and congregational support networks, as well as studies of racial differences in informal support networks.

Religious Coping, Meaning-Making and Stress: Perspective of Support Staff of Children with Disabilities in Residential Disability Centres in Oman

ERIC Educational Resources Information Center

Emam, Mahmoud; Al-Bahrani, Muna

2016-01-01

Staff providing support to children with disabilities in residential disability centres in Oman are exposed to stressful work environments which may put them at an increased risk of burnout. Previous research has examined predictors of stress in disability support staff, but there is little consensus as the findings are inconclusive. Using a…

Where Would You Turn for Help? Older Adults' Awareness of Community Support Services

ERIC Educational Resources Information Center

Denton, M.; Ploeg, J.; Tindale, J.; Hutchison, B.; Brazil, K.; Akhtar-Danesh, N.; Quinlan, M.; Lillie, J.; Plenderleith, J. Millen; Boos, L.

2008-01-01

Previous findings on older adults' awareness of community support services (CSSs) have been inconsistent and marred by acquiescence or over-claiming bias. To address this issue, this study used a series of 12 vignettes to describe common situations faced by older adults for which CSSs might be appropriate. In telephone interviews, 1,152 adults…

Vaginal eroticism: a replication study.

PubMed

Alzate, H

1985-12-01

Vaginal eroticism was investigated in a group of 27 coitally experienced volunteers by means of systematic digital stimulation of both vaginal walls. Erogenous zones were found in all subjects, mainly located on the upper anterior wall and the lower posterior one. An orgasmic response was elicited by stimulation of these zones in 89% of the subjects. This study supports previous findings regarding vaginal eroticism. It does not support the existence of the discrete anatomical structure called the Grafenberg spot. It supports the contention that there are two distinct types of female orgasm, vaginally evoked and clitorally evoked. It also supports the finding that some women expel a fluid through the urethra at the time of orgasm. In this particular case the fluid was chemically indistinguishable from urine.

Executive Functioning and Visuospatial Abilities in Bulimia Nervosa with or without a Previous History of Anorexia Nervosa.

PubMed

Degortes, Daniela; Tenconi, Elena; Santonastaso, Paolo; Favaro, Angela

2016-03-01

The aim of the present study was to investigate executive functioning and visuospatial abilities in patients with bulimia nervosa (BN), with a particular interest in exploring the impact of a previous diagnosis of anorexia nervosa (AN). Several neuropsychological tasks were administered to 89 BN patients (52 with a previous history of AN and 37 without previous AN) and 160 healthy women. A poorer performance on set-shifting measures (Wisconsin Card Sorting Test) was found only in BN patients with a previous history of AN. Decision-making abilities (Iowa Gambling Task) were significantly impaired in the whole sample of BN patients, but difficulties were more pronounced in the subgroup with previous AN. Finally, we did not find any differences in response inhibition and visuospatial abilities between the two samples of BN patients and healthy women. Our findings support the idea that cognitive abilities in patients with BN are more impaired in the presence of a prior history of AN. The clinical and treatment implications of our findings should be explored in future studies. Copyright © 2015 John Wiley & Sons, Ltd and Eating Disorders Association.

The Evolutionary History of Daphniid α-Carbonic Anhydrase within Animalia

PubMed Central

Culver, Billy W.; Morton, Philip K.

2015-01-01

Understanding the mechanisms that drive acid-base regulation in organisms is important, especially for organisms in aquatic habitats that experience rapidly fluctuating pH conditions. Previous studies have shown that carbonic anhydrases (CAs), a family of zinc metalloenzymes, are responsible for acid-base regulation in many organisms. Through the use of phylogenetic tools, this present study attempts to elucidate the evolutionary history of the α-CA superfamily, with particular interest in the emerging model aquatic organism Daphnia pulex. We provide one of the most extensive phylogenies of the evolution of α-CAs, with the inclusion of 261 amino acid sequences across taxa ranging from Cnidarians to Homo sapiens. While the phylogeny supports most of our previous understanding on the relationship of how α-CAs have evolved, we find that, contrary to expectations, amino acid conservation with bacterial α-CAs supports the supposition that extracellular α-CAs are the ancestral state of animal α-CAs. Furthermore, we show that two cytosolic and one GPI-anchored α-CA in Daphnia genus have homologs in sister taxa that are possible candidate genes to study for acid-base regulation. In addition, we provide further support for previous findings of a high rate of gene duplication within Daphnia genus, as compared with other organisms. PMID:25893130

Examining Variation in the Impact of School-Wide Positive Behavioral Interventions and Supports: Findings from a Randomized Controlled Effectiveness Trial

ERIC Educational Resources Information Center

Bradshaw, Catherine P.; Waasdorp, Tracy E.; Leaf, Philip J.

2015-01-01

School-Wide Positive Behavioral Interventions and Supports (SWPBIS; Sugai & Horner, 2006) is currently implemented in over 20,000 schools across the country with the goal of preventing disruptive behavior problems and enhancing the school climate. While previous studies have indicated significant main effects of SWPBIS on student outcomes, the…

Measuring Empathy in Pharmacy Students

PubMed Central

Van Winkle, Lon J.; Hojat, Mohammadreza

2011-01-01

Objective. To validate the Jefferson Scale of Empathy-Health Profession Students version (JSE-HPS) in pharmacy students. Methods. The JSE-HPS (20 items), adapted from the original Jefferson Scale of Empathy for use among students in the healthcare professions, was completed by 187 first-year pharmacy students at Midwestern University Chicago College of Pharmacy. Results. Two factors, “perspective-taking” and “compassionate care,” emerged from factor analysis in this study, accounting for 31% and 8% of the variance, respectively. These factors are similar to the prominent ones reported in previous research involving physicians and medical students, supporting the construct validity of this instrument for pharmacy students. In the current study, mean JSE-HPS score was comparable to those reported for medical students, and consistent with previous findings with medical students and physicians. Women scored significantly higher than men. Conclusions. Findings support the construct validity and reliability of the JSE-HPS for measuring empathy in pharmacy students. PMID:21931447

The Development of Technology Enhanced Learning: Findings from a 2008 Survey of UK Higher Education Institutions

ERIC Educational Resources Information Center

Jenkins, Martin; Browne, Tom; Walker, Richard; Hewitt, Roger

2011-01-01

This article summarises the key findings from a UK survey of higher education institutions, focusing on the development of technology enhanced learning (TEL). TEL is defined as any online facility or system that directly supports learning and teaching. The 2008 survey builds upon previous UCISA surveys conducted in 2001, 2003 and 2005 and for…

Development Genetic Analysis of General Cognitive Ability from 1 to 12 Years in a Sample of Adoptees, Biological Siblings, and Twins.

ERIC Educational Resources Information Center

Bishop, E. G.; Cherny, Stacey S.; Corley, Robin; Plomin, Robert; DeFries, John C.; Hewitt, John K.

2003-01-01

Studied continuity and change in general cognitive ability from infancy to adolescence in adoptees (107 children), biological siblings (87 pairs), and twins (224 monozygotic and 189 dyzygotic pairs). Findings generally support previous findings about genetic and environmental factors, with the exception that in the transition to adolescence,…

Organic Chemistry in Action! Developing an Intervention Program for Introductory Organic Chemistry to Improve Learners' Understanding, Interest, and Attitudes

ERIC Educational Resources Information Center

O'Dwyer, Anne; Childs, Peter

2014-01-01

The main areas of difficulty experienced by those teaching and learning organic chemistry at high school and introductory university level in Ireland have been identified, and the findings support previous studies in Ireland and globally. Using these findings and insights from chemistry education research (CER), the Organic Chemistry in Action!…

Crewmember and mission control personnel interactions during International Space Station missions.

PubMed

Kanas, Nick A; Salnitskiy, Vyacheslav P; Boyd, Jennifer E; Gushin, Vadim I; Weiss, Daniel S; Saylor, Stephanie A; Kozerenko, Olga P; Marmar, Charles R

2007-06-01

Reports from astronauts and cosmonauts, studies from space analogue environments on Earth, and our previous research on the Mir Space Station have identified a number of psychosocial issues that can lead to problems during long-duration space missions. Three of these issues (time effects, displacement, leader role) were studied during a series of long-duration missions to the International Space Station (ISS). As in our previous Mir study, mood and group climate questions from the Profile of Mood States or POMS, the Group Environment Scale or GES, and the Work Environment Scale or WES were completed weekly by 17 ISS crewmembers (15 men, 2 women) in space and 128 American and Russian personnel in mission control. The results did not support the presence of decrements in mood and group cohesion during the 2nd half of the missions or in any specific quarter. The results did support the predicted displacement of negative feelings to outside supervisors in both crew and mission control subjects on all six questionnaire subscales tested. Crewmembers related cohesion in their group to the support role of their commander. For mission control personnel, greater cohesion was linked to the support role as well as to the task role of their leader. The findings from our previous study on the Mir Space Station were essentially replicated on board the ISS. The findings suggest a number of countermeasures for future on-orbit missions, some of which may not be relevant for expeditionary missions (e.g., to Mars).

The effects of perceived organizational support, perceived supervisor support and perceived co-worker support on safety and health compliance.

PubMed

Puah, Lee Na; Ong, Lin Dar; Chong, Wei Ying

2016-09-01

Although knowledge is cumulating, very little is known about the effects of various sources of support on safety and health compliance. This study goes beyond previous research by investigating the relationships among perceived support from organizations, supervisors and co-workers, and employees' safety and health compliance behaviour at chemical and petroleum process plants. The results of this study show that the support from organizations, supervisors and co-workers was significantly related to employees' safety and health compliance. Also, the findings reveal that perceived supervisor support has the strongest influence in ensuring employees' safety and health compliance behaviour.

Relationships of forest vegetation to habitat on two types of glacial drift in New Hampshire

Treesearch

William B. Leak

1978-01-01

Species composition and site index were determined on nine tree habitats in an area of schistose drift and compared with previous findings on habitats with granitic drift. Habitats on schistose drift supported more sugar maple and had somewhat higher site indexes. Compact tills in schistose drift supported northern hardwoods, and the site indexes for yellow birch were...

The Root Cause of Post-Traumatic and Developmental Stress Disorder (Phase 1)

DTIC Science & Technology

2015-04-01

effects accentuates fear behavior (abstract) Our previous experiments demonstrated that systemic depletion of serotonin (5-hydroxytryptamine, 5- HT ...potentiated fear behaviors. However, the effects of isolated depletion of 5- HT in the LA, and the molecular mechanisms underlying enhanced glutamatergic...susceptible to the effects of severe stress. Previous findings from our lab support the existence of an anatomical phenotype related to the 5HTTLPR serotonin

Antihistamine Use in Early Pregnancy and Risk of Birth Defects

PubMed Central

Li, Qian; Mitchell, Allen A.; Werler, Martha M.; Yau, Wai-Ping; Hernández-Díaz, Sonia

2014-01-01

Background Several studies have reported an association between use of specific antihistamines in early pregnancy and certain specific birth defects. Objective To test 16 previously-hypothesized associations between specific antihistamines and specific birth defects, and identify possible new associations. Methods We used 1998-2010 data from the Slone Epidemiology Center Birth Defects Study, a multicenter case-control surveillance program of birth defects in North America. Mothers were interviewed within six months of delivery about demographic, reproductive, medical, and behavioral factors, and details on use of prescription and non-prescription medications. We compared 1st trimester exposure to specific antihistamines between 13,213 infants with specific malformations and 6,982 non-malformed controls, using conditional logistic regression to estimate odds ratios (ORs) and 95% confidence intervals (CIs), with adjustment for potential confounders, including indication for use. Results Overall, 13.7% of controls were exposed to antihistamines during the 1st trimester. The most commonly-used medications were diphenhydramine (4.2%), loratadine (3.1%), doxylamine (1.9%), and chlorpheniramine (1.7%). Where estimates were stable, none supported the previously-hypothesized associations. Among over 100 exploratory comparisons of other specific antihistamine/defect pairs, 14 had ORs ≥1.5 of which 6 had 95% CI bounds excluding 1.0 before but not after adjustment for multiple comparisons. Conclusion Our findings do not provide meaningful support for previously-posited associations between antihistamines and major congenital anomalies; at the same time, we identified associations that had not been previously suggested. We suspect that previous associations may be chance findings in the context of multiple comparisons, a situation which may also apply to our new findings. PMID:24565715

Effects of Support Groups for Individuals with Early-Stage Dementia and Mild Cognitive Impairment: An Integrative Review.

PubMed

Jao, Ying-Ling; Epps, Fayron; McDermott, Caroline; Rose, Karen M; Specht, Janet K

2017-01-01

Support groups have demonstrated promising outcomes for individuals with mild cognitive impairment (MCI) and early-stage dementia (ESD) in previous literature reviews. However, evidence has not been updated since 2007. The current review aimed to update current evidence on the use and effects of support groups for individuals with MCI and ESD and their care partners. A literature search was conducted in seven databases and 18 eligible research articles were retrieved. Support groups showed positive impacts on participant acceptance of cognitive impairment; performance and satisfaction of meaningful activity; resilience; self-help; and care partner coping self-efficacy, perceived support, and preparation and task effectiveness. Findings also revealed that support groups were well accepted by participants and care partners. Few studies included ethnic diversity, limiting the generalizability of findings. Further large-scale studies are needed to confirm the effects of support groups for individuals with MCI and ESD in all populations. [Res Gerontol Nurs. 2017; 10(1):35-51.]. Copyright 2016, SLACK Incorporated.

DO PERIODICITIES IN EXTINCTION-WITH POSSIBLE ASTRONOMICAL CONNECTIONS-SURVIVE A REVISION OF THE GEOLOGICAL TIMESCALE?

DOE Office of Scientific and Technical Information (OSTI.GOV)

Melott, Adrian L.; Bambach, Richard K.

A major revision of the geological timescale was published in 2012. We re-examine our past finding of a 27 Myr periodicity in marine extinction rates by re-assigning dates to the extinction data used previously. We find that the spectral power in this period is somewhat increased, and persists at a narrow bandwidth, which supports our previous contention that the Nemesis hypothesis is untenable as an explanation for the periodicity that was first noted by Raup and Sepkoski in the 1980s. We enumerate a number of problems in a recent study comparing extinction rates with time series models.

Do Periodicities in Extinction—with Possible Astronomical Connections—Survive a Revision of the Geological Timescale?

NASA Astrophysics Data System (ADS)

Melott, Adrian L.; Bambach, Richard K.

2013-08-01

A major revision of the geological timescale was published in 2012. We re-examine our past finding of a 27 Myr periodicity in marine extinction rates by re-assigning dates to the extinction data used previously. We find that the spectral power in this period is somewhat increased, and persists at a narrow bandwidth, which supports our previous contention that the Nemesis hypothesis is untenable as an explanation for the periodicity that was first noted by Raup & Sepkoski in the 1980s. We enumerate a number of problems in a recent study comparing extinction rates with time series models.

Effect of airborne contaminants on the wettability of supported graphene and graphite

NASA Astrophysics Data System (ADS)

Li, Zhiting; Wang, Yongjin; Kozbial, Andrew; Shenoy, Ganesh; Zhou, Feng; McGinley, Rebecca; Ireland, Patrick; Morganstein, Brittni; Kunkel, Alyssa; Surwade, Sumedh P.; Li, Lei; Liu, Haitao

2013-10-01

It is generally accepted that supported graphene is hydrophobic and that its water contact angle is similar to that of graphite. Here, we show that the water contact angles of freshly prepared supported graphene and graphite surfaces increase when they are exposed to ambient air. By using infrared spectroscopy and X-ray photoelectron spectroscopy we demonstrate that airborne hydrocarbons adsorb on graphitic surfaces, and that a concurrent decrease in the water contact angle occurs when these contaminants are partially removed by both thermal annealing and controlled ultraviolet-O3 treatment. Our findings indicate that graphitic surfaces are more hydrophilic than previously believed, and suggest that previously reported data on the wettability of graphitic surfaces may have been affected by unintentional hydrocarbon contamination from ambient air.

Effect of airborne contaminants on the wettability of supported graphene and graphite.

PubMed

Li, Zhiting; Wang, Yongjin; Kozbial, Andrew; Shenoy, Ganesh; Zhou, Feng; McGinley, Rebecca; Ireland, Patrick; Morganstein, Brittni; Kunkel, Alyssa; Surwade, Sumedh P; Li, Lei; Liu, Haitao

2013-10-01

It is generally accepted that supported graphene is hydrophobic and that its water contact angle is similar to that of graphite. Here, we show that the water contact angles of freshly prepared supported graphene and graphite surfaces increase when they are exposed to ambient air. By using infrared spectroscopy and X-ray photoelectron spectroscopy we demonstrate that airborne hydrocarbons adsorb on graphitic surfaces, and that a concurrent decrease in the water contact angle occurs when these contaminants are partially removed by both thermal annealing and controlled ultraviolet-O3 treatment. Our findings indicate that graphitic surfaces are more hydrophilic than previously believed, and suggest that previously reported data on the wettability of graphitic surfaces may have been affected by unintentional hydrocarbon contamination from ambient air.

Hemiconvulsion-hemiplegia-epilepsy syndrome: characteristic early magnetic resonance imaging findings.

PubMed

Freeman, Jeremy L; Coleman, Lee T; Smith, Lindsay J; Shield, Lloyd K

2002-01-01

We report three patients with hemiconvulsion-hemiplegia-epilepsy syndrome who presented acutely and were shown to have striking neuroimaging findings suggestive of diffuse cytotoxic edema confined to one hemisphere, including extensive diffusion-weighted imaging abnormalities in two cases. Two patients subsequently developed progressive and extensive atrophy of the involved hemisphere. These findings are consistent with earlier descriptions of the classic neuroradiologic features of this syndrome and are helpful in the differential diagnosis of acute infantile hemiplegia. Further, the findings support the previously proposed pathogenetic mechanism of neuronal injury caused by status epilepticus.

Exploring the role of the nurse manager in supporting point-of-care nurses’ adoption of electronic health records: protocol for a qualitative research study

PubMed Central

Strudwick, Gillian; Booth, Richard G; Bjarnadottir, Ragnhildur I; Collins, Sarah; Srivastava, Rani

2017-01-01

Introduction An increasing number of electronic health record (EHR) systems have been implemented in clinical practice environments where nurses work. Findings from previous studies have found that a number of intended benefits of the technology have not yet been realised to date, partially due to poor system adoption among health professionals such as nurses. Previous studies have suggested that nurse managers can support the effective adoption and use of the technology by nurses. However, no known studies have identified what role nurse managers have in supporting technology adoption, nor the specific strategies that managers can employ to support their staff. Therefore, the purpose of this research is to better understand the role of the nurse manager in point-of-care nurses’ use of EHRs, and to identify strategies that may be effective in supporting clinical adoption. Methods and analysis This study will use a qualitative descriptive design. Interviews with both nurse managers and point-of-care nursing staff will be conducted in a Canadian mental health and addiction healthcare organisation where an EHR has been implemented. A semistructured interview guide will be used, and interviews will be audio recorded. Transcripts will be analysed using a directed content analysis technique. Strategies to ensure the trustworthiness of the data analysis procedure and findings will be employed. Ethics and dissemination Ethical approval for this study has been obtained. Dissemination strategies may include a paper submission to a peer-reviewed journal, a conference submission and meetings to share findings with the study site leadership team. Findings from this research will be used to inform a future study which aims to assess levels of competencies and perform a psychometric analysis of the Nursing Informatics Competency Assessment for the Nurse Leader instrument in a Canadian context. PMID:29025847

Exploring the role of the nurse manager in supporting point-of-care nurses' adoption of electronic health records: protocol for a qualitative research study.

PubMed

Strudwick, Gillian; Booth, Richard G; Bjarnadottir, Ragnhildur I; Collins, Sarah; Srivastava, Rani

2017-10-12

An increasing number of electronic health record (EHR) systems have been implemented in clinical practice environments where nurses work. Findings from previous studies have found that a number of intended benefits of the technology have not yet been realised to date, partially due to poor system adoption among health professionals such as nurses. Previous studies have suggested that nurse managers can support the effective adoption and use of the technology by nurses. However, no known studies have identified what role nurse managers have in supporting technology adoption, nor the specific strategies that managers can employ to support their staff. Therefore, the purpose of this research is to better understand the role of the nurse manager in point-of-care nurses' use of EHRs, and to identify strategies that may be effective in supporting clinical adoption. This study will use a qualitative descriptive design. Interviews with both nurse managers and point-of-care nursing staff will be conducted in a Canadian mental health and addiction healthcare organisation where an EHR has been implemented. A semistructured interview guide will be used, and interviews will be audio recorded. Transcripts will be analysed using a directed content analysis technique. Strategies to ensure the trustworthiness of the data analysis procedure and findings will be employed. Ethical approval for this study has been obtained. Dissemination strategies may include a paper submission to a peer-reviewed journal, a conference submission and meetings to share findings with the study site leadership team. Findings from this research will be used to inform a future study which aims to assess levels of competencies and perform a psychometric analysis of the Nursing Informatics Competency Assessment for the Nurse Leader instrument in a Canadian context. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

Methodological exemplar of integrating quantitative and qualitative evidence - supportive care for men with prostate cancer: what are the most important components?

PubMed

Huntley, Alyson L; King, Anna J L; Moore, Theresa H M; Paterson, Charlotte; Persad, Raj; Sharp, Debbie; Evans, Maggie

2017-01-01

To present a methodological exemplar of integrating findings from a quantitative and qualitative review on the same topic to provide insight into components of care that contribute to supportive care that is acceptable to men with prostate cancer. Men with prostate cancer are likely to live a long time with the disease, experience side effects from treatment and therefore have ongoing supportive care needs. Quantitative and qualitative reviews have been published but the findings have yet to be integrated. Integration of quantitative and qualitative synthesized evidence. Two previously published systematic reviews. Synthesized evidence on supportive care for men with prostate cancer was integrated from two previously published systematic reviews: a narrative quantitative review and a qualitative review with thematic synthesis. These two streams of synthesized evidence were synthesized using concurrent narrative summary. Data from both reviews were used to develop a set of propositions from which a summary of components of care that likely to contribute to supportive care acceptable to men with prostate cancer were identified. Nine propositions were developed which covered men's supportive care focusing on the role of health professionals. These propositions were used to compose nine components of care likely to lead to supportive care that is acceptable to men with prostate cancer. Some of these components are no/low cost such as developing a more empathic personalized approach, but more specific approaches need further investigation in randomized controlled trials, for example, online support. This methodological exemplar demonstrates the integration of quantitative and qualitative synthesized data to determine components of care likely to lead to provision of supportive care acceptable to men with prostate cancer. © 2016 The Authors. Journal of Advanced Nursing Published by John Wiley & Sons Ltd.

Cognitive Style as Related to Emotional Empathy.

ERIC Educational Resources Information Center

DeVore, Cheryl H.; And Others

1989-01-01

A study compared the field dependence/independence and a measure of emotional empathy in 44 dental hygiene students and 42 students in an introductory psychology course. The results do not entirely support previous findings that dental hygiene students are typically more field independent. (Author/MSE)

Exploring the factors contributing to empowerment of Turkish migrant women in the UK.

PubMed

Cakir, S Gulfem; Yerin Guneri, Oya

2011-06-01

This study examined the role of demographic factors (length of stay, education and language level), perceived discrimination, social support, four acculturation attitudes, and psychological distress in predicting empowerment among Turkish migrant women in the UK. The study sample comprised 248 Turkish migrant women (mean age: 34.38; SD: 7.6) living in London. Self-report questionnaires were used to assess empowerment, social support, acculturation attitude and psychological distress. The study hypothesized that perceived discrimination; acculturation attitudes of separation, assimilation and marginalization; and psychological distress would be negative predictors of empowerment and that social support and an integration acculturation attitude would be positive predictors of empowerment. To some extent, the study findings supported this hypothesis. Hierarchical regression analysis indicated psychological distress to be the most significant predictor of empowerment, with other significant predictors including level of education and social support. More specifically, lower levels of psychological distress and higher levels of education and social support appeared to predict greater empowerment. Based on these findings, it can be concluded that level of education and social support may function as protective factors and that psychological distress may function as a risk factor for empowerment in the migration context. The paper discusses the findings of this study in relation to the previous literature and notes their implications for future research and practice.

Selective exposure: the impact of collectivism and individualism.

PubMed

Kastenmüller, Andreas; Greitemeyer, Tobias; Jonas, Eva; Fischer, Peter; Frey, Dieter

2010-12-01

Previous research has found that people prefer information that supports rather than conflicts with their decisions (selective exposure). In the present three studies, we investigated the impact of collectivism and individualism on this bias. First, based on previous findings showing that collectivists compared to individualists are inclined to seek the 'middle way' and tend towards self-criticism, we predicted and found that the confirmation bias was more negative among collectivists compared to individualists. Second, we assumed that the difference between selected supporting versus conflicting information would move more in favour of conflicting information among both collectivists and individualists when the domain was important to them. As predicted (chronic and primed), collectivists and individualists, respectively, sought more conflicting (compared to supporting) information depending on whether collectivistic (e.g., the family) or individualistic (e.g., one's own uniqueness) attributes were important.

Electrophysiological responses to evaluative priming: the LPP is sensitive to incongruity.

PubMed

Herring, David R; Taylor, Jennifer H; White, Katherine R; Crites, Stephen L

2011-08-01

Previous studies examining event-related potentials and evaluative priming have been mixed; some find evidence that evaluative priming influences the N400, whereas others find evidence that it affects the late positive potential (LPP). Three experiments were conducted using either affective pictures (Experiments 1 and 2) or words (Experiment 3) in a sequential evaluative priming paradigm. In line with previous behavioral findings, participants responded slower to targets that were evaluatively incongruent with the preceding prime (e.g., negative preceded by positive) compared to evaluatively congruent targets (e.g., negative preceded by negative). In all three studies, the LPP was larger to evaluatively incongruent targets compared to evaluatively congruent ones, and there was no evidence that evaluative incongruity influenced the N400 component. Thus, the present results provide additional support for the notion that evaluative priming influences the LPP and not the N400. We discuss possible reasons for the inconsistent findings in prior research and the theoretical implications of the findings for both evaluative and semantic priming. 2011 APA, all rights reserved

Emotions and support needs following a distressing birth: Scoping study with pregnant multigravida women in North-West England.

PubMed

Thomson, Gill; Downe, Soo

2016-09-01

to identify the emotional and support needs of pregnant multigravida women who have experienced adverse responses associated with a previous childbirth experience. four maternity hospitals in North-West England. 100 surveys were distributed at an anomaly scan clinic in each of four maternity hospitals (total n=400). The survey included an adapted version of a Post-Traumatic Stress Disorder Symptom Scale to explore trauma responses at two broad time points: (a) following a previous birth and (b) during the current pregnancy. Participants were also asked about the optimal time to receive support post-birth, and the type and provider of support they had accessed/would have liked to access. Descriptive and inferential statistics were undertaken on the quantitative data. The qualitative data were analysed using a basic thematic approach. multigravida pregnant women aged 18+ years. the overall response rate was 28% (n=112); 43% (n=46) of the women had experienced negative/trauma responses associated with a previous birth, 74% of whom (n=34) continued/re-experienced adverse responses in their current pregnancy. Most commonly reported trauma responses were difficulties in recalling the previous birth(s), avoiding memories associated with it, and the distress associated with these memories when they were recalled. Approximately 54% (n=25) had received some form of support post-birth, and variations in preferred timing of postnatal support provision were reported. Information on available support and opportunities to discuss the birth with a maternity professional were identified most frequently as preferred support options. women's views about what might work should form the basis for effectiveness studies in this area. Among the participants in this study there was evidence of unmet support needs relating to negative or traumatic responses to a previous birth. The range of preferred timing and types of support indicate that flexible needs-based support options should be provided. Further research should assess if these findings are reinforced in a more diverse sample with a higher response rate. Copyright © 2016 Elsevier Ltd. All rights reserved.

Developing an Initial Physical Function Item Bank from Existing Sources.

ERIC Educational Resources Information Center

Bode, Rita K.; Cella, David; Lai, Jin-shei; Heinemann, Allen W.

2003-01-01

Illustrates incremental item banking using health-related quality of life data collected from two samples of patients receiving cancer treatment (n=1,755 and n=1,544). Results support findings from previous studies that have equated separate instruments by co-calibrating their items. (SLD)

NIH-supported trial drug shows benefit in children with previously treated cancers

Cancer.gov

Young patients with some types of advanced cancer, for whom standard treatment had failed, had their tumors disappear during treatment with a drug that both targets and blocks a protein associated with their disease. These findings are from a Phase I, mul

Supporting Families of Young Children with Disabilities: Examining the Role of Administrative Structures

ERIC Educational Resources Information Center

Epley, Pamela; Gotto, George S., IV; Summers, Jean Ann; Brotherson, Mary Jane; Turnbull, Ann P.; Friend, Anna

2010-01-01

This article presents findings from two early intervention agencies examining how administrative structures affect providers' ability to serve families of young children with disabilities. Based on previous research identifying three administrative structures (i.e., vision/leadership, organizational climate, and resources), this article…

Relation of Social Desirability To Internal Dimensions of The Self-Ideal Congruence Construct

ERIC Educational Resources Information Center

Scherer, Shawn E.

1974-01-01

Using the Self-Insight Test, 80 subjects' self-ratings, ideal ratings and self-ideal discrepancies on six areas of the self acceptance construct were correlated with scores on the Edwards and Marlowe-Crowne Social Desirability (SD) scales. Findings support previous studies. (Author)

Impaired Spatial Navigation in Pediatric Anxiety

ERIC Educational Resources Information Center

Mueller, Sven C.; Temple, Veronica; Cornwell, Brian; Grillon, Christian; Pine, Daniel S.; Ernst, Monique

2009-01-01

Background: Previous theories implicate hippocampal dysfunction in anxiety disorders. Most of the data supporting these theories stem from animal research, particularly lesion studies. The generalization of findings from rodent models to human function is hampered by fundamental inter-species differences. The present work uses a task of spatial…

Social Interaction and Developmental Competence of Preterm and Full-Term Infants during the First Year of Life.

ERIC Educational Resources Information Center

Crnic, Keith A.; And Others

1983-01-01

Results support previous findings of interactional differences during early infancy between mother/premature and mother/full-term infant dyads. Preterms performed significantly below full-terms on measures of cognitive and language development corrected for gestational age. (Author/RH)

Social Support and Health-Related Quality of Life Among Low-Income Women: Findings from Community-Based Participatory Research.

PubMed

Salihu, Hamisu M; Adegoke, Korede; Turner, DeAnne; Al Agili, Dania; Berry, Estrellita Lo

2017-04-01

This study examined the association between social support and health-related quality of life (HRQoL) among low-income women in the southeastern region of the United States. Analysis was performed on data from a community needs assessment survey that was designed to explore social determinants of health and QoL indicators using a community-based participatory research approach. The study sample comprised 132 women aged 18 years old and older. Bivariate analysis and logistic regressions with bootstrapping were performed. Social support was predictive of physical and mental HRQoL in a contrasting fashion, suggesting a complex relation. Other social determinants of global HRQoL independent of social support status include marital and employment status, maternal age, and income. Our results also demonstrate complex interaction patterns across race, social support, and HRQoL. The linkage between social support and HRQoL may not be a simple relation, as previously assumed. Rather, it is characterized by multifaceted interactions through which social determinants of health modulate the impact of social support on HRQoL. These are new findings.

Emotional approach coping and the effects of online peer-led support group participation among patients with breast cancer: a longitudinal study.

PubMed

Batenburg, Anika; Das, Enny

2014-11-28

Previous research on the effects of online peer support on psychological well-being of patients with cancer showed mixed findings. There is a need for longitudinal studies explaining if and when online peer-led support groups are beneficial. How patients cope with emotions that come along with the cancer diagnosis might influence effectiveness of online participation. Emotional approach coping is a construct encompassing the intentional use of emotional processing and emotional expression in efforts to manage adverse circumstances. In this longitudinal study, we hypothesize that mixed findings in previous research are partly caused by individual differences in coping with emotions, which may moderate the effects of online support group participation on patients' well-being. A total of 133 Dutch patients with breast cancer filled out a baseline (T0) and a follow-up (T1, 6 months later) questionnaire assessing intensity of online participation within the online support community, emotional approach coping (ie, actively processing and expressing emotions), and psychological well-being (depression, emotional well-being, and breast cancer-related concerns). There were 109 patients who visited an online support community at both points in time. Repeated measures ANOVAs assessed change in well-being over time. Results showed 3-way interactions of time, online intensity of participation, and emotional approach coping on emotional well-being (F1,89=4.232, P=.04, η(2) ρ=.045) and depression (F1,88=8.167, P=.005, η(2) ρ=.085). Online support group participation increased emotional well-being over time for patients who scored low on emotional approach coping at T0, provided that they were highly active online. Patients who were highly active online with a high score on emotional approach coping reported no change in sense of well-being, but showed the highest score on well-being overall. Participating less frequently online was only beneficial for patients who scored high on emotional approach coping, showing an increase in well-being over time. Patients participating less frequently and with a low score on emotional approach coping reported no significant change in well-being over time. This study extends previous findings on the effects of online peer support in two ways: by testing changes in well-being as a function of intensity of online support group participation and by examining the role of individual differences in emotional coping styles. Findings showed no negative effects of intense support group participation. Participating frequently online was especially helpful for patients who approach their emotions less actively; their emotional well-being increased over time. In contrast, frequent online users who actively approach their emotions experienced no change in well-being, reporting highest levels of well-being overall. For patients who participate less intensively within the support community, coping style seems to outweigh effects of online participation; over time, patients who actively approached emotions experienced an increase in psychological well-being, whereas patients with a low score on emotional approach coping reported no change in depression and emotional well-being.

Emotional Approach Coping and the Effects of Online Peer-Led Support Group Participation Among Patients With Breast Cancer: A Longitudinal Study

PubMed Central

2014-01-01

Background Previous research on the effects of online peer support on psychological well-being of patients with cancer showed mixed findings. There is a need for longitudinal studies explaining if and when online peer-led support groups are beneficial. How patients cope with emotions that come along with the cancer diagnosis might influence effectiveness of online participation. Emotional approach coping is a construct encompassing the intentional use of emotional processing and emotional expression in efforts to manage adverse circumstances. Objective In this longitudinal study, we hypothesize that mixed findings in previous research are partly caused by individual differences in coping with emotions, which may moderate the effects of online support group participation on patients’ well-being. Methods A total of 133 Dutch patients with breast cancer filled out a baseline (T0) and a follow-up (T1, 6 months later) questionnaire assessing intensity of online participation within the online support community, emotional approach coping (ie, actively processing and expressing emotions), and psychological well-being (depression, emotional well-being, and breast cancer–related concerns). There were 109 patients who visited an online support community at both points in time. Repeated measures ANOVAs assessed change in well-being over time. Results Results showed 3-way interactions of time, online intensity of participation, and emotional approach coping on emotional well-being (F 1,89=4.232, P=.04, η2 ρ=.045) and depression (F 1,88=8.167, P=.005, η2 ρ=.085). Online support group participation increased emotional well-being over time for patients who scored low on emotional approach coping at T0, provided that they were highly active online. Patients who were highly active online with a high score on emotional approach coping reported no change in sense of well-being, but showed the highest score on well-being overall. Participating less frequently online was only beneficial for patients who scored high on emotional approach coping, showing an increase in well-being over time. Patients participating less frequently and with a low score on emotional approach coping reported no significant change in well-being over time. Conclusions This study extends previous findings on the effects of online peer support in two ways: by testing changes in well-being as a function of intensity of online support group participation and by examining the role of individual differences in emotional coping styles. Findings showed no negative effects of intense support group participation. Participating frequently online was especially helpful for patients who approach their emotions less actively; their emotional well-being increased over time. In contrast, frequent online users who actively approach their emotions experienced no change in well-being, reporting highest levels of well-being overall. For patients who participate less intensively within the support community, coping style seems to outweigh effects of online participation; over time, patients who actively approached emotions experienced an increase in psychological well-being, whereas patients with a low score on emotional approach coping reported no change in depression and emotional well-being. PMID:25474819

Perceived ability and social support as mediators of achievement motivation and performance anxiety.

PubMed

Abrahamsen, F E; Roberts, G C; Pensgaard, A M; Ronglan, L T

2008-12-01

The present study is founded on achievement goal theory (AGT) and examines the relationship between motivation, social support and performance anxiety with team handball players (n=143) from 10 elite teams. Based on these theories and previous findings, the study has three purposes. First, it was predicted that the female athletes (n=69) would report more performance worries and more social support use than males (n=74). The findings support the hypothesis for anxiety, but not for social support use. However, females report that they felt social support was more available than males. Second, we predicted and found a positive relationship between the interaction of ego orientation and perceptions of a performance climate on performance anxiety, but only for females. As predicted, perceived ability mediated this relationship. Finally, we predicted that perceptions of a performance climate were related to the view that social support was less available especially for the male athletes. Simple correlation supports this prediction, but the regression analyses did not reach significance. Thus, we could not test for mediation of social support between motivational variables and anxiety. The results illustrate that fostering a mastery climate helps elite athletes tackle competitive pressure.

The trees and the forest: mixed methods in the assessment of recovery based interventions' processes and outcomes in mental health.

PubMed

Hasson-Ohayon, Ilanit; Roe, David; Yanos, Philip T; Lysaker, Paul H

2016-12-01

Recent developments in mental health have emphasized recovery as an outcome for people with serious mental illness (SMI). Accordingly, several studies have attempted to evaluate the process and outcome of recovery-oriented psychosocial interventions. To review and discuss quantitative and qualitative findings from previous efforts to study the impact of five recovery-oriented interventions: Illness Management and Recovery (IMR), Narrative Enhancement and Cognitive Therapy (NECT), Supported Employment (SE), Supported Socialization (SS), and Family Psychoeducation. Reviewing the literature on studies that examine the effectiveness of these interventions by using both quantitative and qualitative approach. Qualitative findings in these studies augment quantitative findings and at times draw attention to unexpected findings and uniquely illuminate the effects of these interventions on self-reflective processes. There is a need for further exploration of how mixed-methods can be implemented to explore recovery-oriented outcomes. Critical questions regarding the implications of qualitative findings are posed.

Exploring the "legacy" of the Tuskegee Syphilis Study: a follow-up study from the Tuskegee Legacy Project.

PubMed

Katz, Ralph V; Green, B Lee; Kressin, Nancy R; James, Sherman A; Wang, Min Qi; Claudio, Cristina; Russell, Stephanie Luise

2009-02-01

The purpose of this follow-up 2003 3-City Tuskegee Legacy Project (TLP) Study was to validate or refute our prior findings from the 1999-2000 4 City TLP Study, which found no evidence to support the widely acknowledged "legacy" of the Tuskegee Syphilis Study (TSS), ie, that blacks are reluctant to participate in biomedical studies due to their knowledge of the TSS. The TLP Questionnaire was administered in this random-digit-dial telephone survey to a stratified random sample of 1162 black, white, and Puerto Rican Hispanic adults in 3 different US cities. The findings from this current 3-City TLP Study fail to support the widely acknowledged "legacy" of the TSS, as awareness of the TSS was not statistically associated with the willingness to participate in biomedical studies. These findings, being in complete agreement with our previous findings from our 1999-2000 4-City TLP, validate those prior findings.

Exploring the “Legacy” of the Tuskegee Syphilis Study: A Follow-up Study From the Tuskegee Legacy Project

PubMed Central

Katz, Ralph V.; Green, B. Lee; Kressin, Nancy R.; James, Sherman A.; Wang, Min Qi; Claudio, Cristina; Russell, Stephanie Luise

2009-01-01

The purpose of this follow-up 2003 3-City Tuskegee Legacy Project (TLP) Study was to validate or refute our prior findings from the 1999–2000 4 City TLP Study, which found no evidence to support the widely acknowledged “legacy” of the Tuskegee Syphilis Study (TSS), ie, that blacks are reluctant to participate in biomedical studies due to their knowledge of the TSS. The TLP Questionnaire was administered in this random-digit-dial telephone survey to a stratified random sample of 1162 black, white, and Puerto Rican Hispanic adults in 3 different US cities. The findings from this current 3-City TLP Study fail to support the widely acknowledged “legacy” of the TSS, as awareness of the TSS was not statistically associated with the willingness to participate in biomedical studies. These findings, being in complete agreement with our previous findings from our 1999–2000 4-City TLP, validate those prior findings. PMID:19378637

Talking with text: communication in therapist-led, live chat cancer support groups.

PubMed

Stephen, Joanne; Collie, Kate; McLeod, Deborah; Rojubally, Adina; Fergus, Karen; Speca, Michael; Turner, Jill; Taylor-Brown, Jill; Sellick, Scott; Burrus, Kimberly; Elramly, Mai

2014-03-01

CancerChatCanada is a pan-Canadian initiative with a mandate to make professionally led cancer support groups available to more people in Canada. Although online support groups are becoming increasingly popular, little is known about therapist-led, synchronous groups using live chat. The purpose of this study was to generate a rich descriptive account of communication experiences in CancerChatCanada groups and to gain an understanding of processes associated with previously-reported benefits. We used interpretive description to analyze interview segments from 102 patients, survivors and family caregivers who participated in CancerChatCanada groups between 2007 and 2011. The analysis yielded four inter-related process themes (Reaching Out From Home, Feeling Safe, Emotional Release, and Talking With Text) and one outcome theme (Resonance and Kinship). The findings extend previous research about text-only online support groups and provide novel insights into features of facilitated, live chat communication that are valued by group members. Copyright © 2013 Elsevier Ltd. All rights reserved.

Tween Consumers: Catalog Clothing Purchase Behavior.

ERIC Educational Resources Information Center

Simpson, Linda; Douglas, Sara; Schimmel, Julie

1998-01-01

Catalog shopping behavior of younger and older adolescents was compared. Results indicated that "tweens" were more concerned with style, brand name, and fashion than were older students. This supports previous findings indicating that the tween years are a time when peer pressure and "fitting in" are very important. (Author/EMK)

2010 Center for Army Leadership Annual Survey of Army Leadership (CASAL): Volume 2, Main Findings

DTIC Science & Technology

2011-05-01

characteristics and student engagement , namely that students have clear roles and expectations, that instructors provide support for autonomy (a previously...C. J. (2009) Facilitators and outcomes of student engagement in a college setting. Journal of Psychology, 143, 5-27. USAREUR. (2007). Modular

Parent-Adolescent Separation: The Role of Parental Divorce.

ERIC Educational Resources Information Center

Moore, DeWayne; Hotch, Deborah F.

1982-01-01

Among late adolescent males, parental divorce was highly related to Emotional separation as a home-leaving indicator; for females, being a firstborn was associated with Personal Control as a home-leaving indicator. These findings supported previous research indicating that males experience more adjustment problems after parental divorce than…

Causal Connections between Mathematical Language and Mathematical Knowledge: A Dialogic Reading Intervention

ERIC Educational Resources Information Center

Purpura, David J.; Napoli, Amy R.; Wehrspann, Elizabeth A.; Gold, Zachary S.

2017-01-01

The acquisition of early mathematical knowledge is critical for successful long-term academic development. Mathematical language is one of the strongest predictors of children's early mathematical success. Findings from previous studies have provided correlational evidence supporting the importance of mathematical language to the development of…

Academic Factors and Turnover Intention: Impact of Organization Factors

ERIC Educational Resources Information Center

Awang, Amran; Ibrahim, Ima Ilyani; Nor, Mohamad Niza Md; Razali, Mohd Fazly Mohd; Arof, Zakaria Mat; Rahman, Ahmad Redzuan Abdul

2015-01-01

Institutional support and recognition led to less happier and committed academicians. Previous empirical findings justified that intentions to leave an organization has been due to issues in commitment and job performance. The study observes 130 academicians in five Malaysian public higher learning institutions in a cross-sectional data collection…

Why Do First-Generation Students Fail?

ERIC Educational Resources Information Center

Mehta, Sanjay S.; Newbold, John J.; O'Rourke, Matthew A.

2011-01-01

Previous studies have determined factors contributing to first-generation student success. This study finds that first-generation students are less involved, have less social and financial support, and do not show a preference for active coping strategies. First-generation students report less social and academic satisfaction as well as lower…

Gradiency and Visual Context in Syntactic Garden-Paths

ERIC Educational Resources Information Center

Farmer, Thomas A.; Anderson, Sarah E.; Spivey, Michael J.

2007-01-01

Through recording the streaming x- and y-coordinates of computer-mouse movements, we report evidence that visual context provides an immediate constraint on the resolution of syntactic ambiguity in the visual-world paradigm. This finding converges with previous eye-tracking results that support a constraint-based account of sentence processing, in…

The Functions of the VCR in the Home Leisure Environment.

ERIC Educational Resources Information Center

Lin, Carolyn A.

1992-01-01

A telephone survey of VCR households examined VCR satisfaction, VCR use, and interpersonal communication about VCRs in relation to home entertainment, displacement, and social utility. Differential patterns were found across all functions as well as support for previous research findings that more satisfied users are heavier users. (nine…

Recategorized WISC-R Scores of Juvenile Delinquents.

ERIC Educational Resources Information Center

Groff, Martin G.; Hubble, Larry M.

1981-01-01

Wechsler Intelligence Scale for Children-Revised scores of a male delinquent sample were grouped by A. Bannatyne's classification of Wechsler's subtests, and these recategorized scores were compared with results of a previous study of learning disabled children. Findings failed to support a theory that learning disabled youth possess a unique…

Impulse Magnetic Fields Generated by Electrostatic Discharges in Protoplanetary Nebulae

NASA Technical Reports Server (NTRS)

Tunyi, I.; Guba, P.; Roth, L. E.; Timko, M.

2002-01-01

We examine quantitative aspects associated with the hypothesis of nebular lightnings as a source of impulse magnetic fields. Our findings support our previous accretion model in which a presence of impulse magnetic fields was of a key necessity. Additional information is contained in the original extended abstract.

Construction and Administration of Ten Air Force Job Inventories.

ERIC Educational Resources Information Center

Mayo, Clyde C.

Ten job inventories were constructed for survey of 11 Air Force career ladders. Background variables designed to assess task-related information were included in each inventory. A replication of a previous study of contributions of technical advisers to inventory construction supported the earlier finding that airmen at supervisory skill levels…

Consequences of Conservatism: Black Male Undergraduates and the Politics of Historically Black Colleges and Universities

ERIC Educational Resources Information Center

Harper, Shaun R.; Gasman, Marybeth

2008-01-01

Previous research has highlighted numerous ways in which historically Black colleges and universities (HBCUs) offer more supportive educational environments for Black students than do predominantly White institutions (PWIs). Notwithstanding the consistency of these findings, persistence and graduation rates remain low for undergraduates,…

Genetic Variation in the Free-Living Amoeba Naegleria fowleri

PubMed Central

Pélandakis, Michel; De Jonckheere, Johan F.; Pernin, Pierre

1998-01-01

In this study, 30 strains of the pathogenic free-living amoeba Naegleria fowleri were investigated by using the randomly amplified polymorphic DNA (RAPD) method. The present study confirmed our previous finding that RAPD variation is not correlated with geographical origin. In particular, Mexican strains belong to the variant previously detected in Asia, Europe, and the United States. In France, surprisingly, strains from Cattenom gave RAPD patterns identical to those of the Japanese strains. In addition, all of these strains, together with an additional French strain from Chooz, exhibited similarities to South Pacific strains. The results also confirmed the presence of numerous variants in Europe, whereas only two variants were detected in the United States. The two variants found in the United States were different from the South Pacific variants. These findings do not support the previous hypothesis concerning the origin and modes of dispersal of N. fowleri. PMID:9687460

Social Support Moderates the Relationship between Sleep and Inflammation in a Population at High Risk for Developing Cardiovascular Disease

PubMed Central

Tomfohr, Lianne M.; Edwards, Kate M.; Madsen, Joshua W.; Mills, Paul J.

2015-01-01

Poor sleep and low social support have each been associated with mortality and morbidity from chronic illness and a small body of research suggests that the two interact to influence systemic inflammation, whereby good social relationships may buffer the relationship between poor sleep and increased inflammation. The current study investigated interactions between sleep and social support in the prediction of inflammation in a clinical population (prehypertensive and hypertensive individuals) at high risk for the development of cardiovascular disease. Using a standardized subjective measure of sleep quality, we found that social support moderated the association between sleep and circulating levels of both IL-6 and CRP, such that poor sleep appeared to confer a risk of increased inflammation only in those participants who also reported low social support. In women, the same relationship was observed for TNF-α. These results extend previous findings into a clinical population and also demonstrate that sleep quality and social support interact in the prediction of two previously uninvestigated clinically relevant inflammatory markers (CRP and TNF-α). High levels of perceived social support may compensate for the negative health impact of poor sleep quality and vice versa. PMID:26402487

Are blood group isoantigens lost from malignant prostatic epithelium? Immunohistochemical support for the preservation of the H isoantigen.

PubMed Central

Vowden, P.; Lowe, A. D.; Lennox, E. S.; Bleehen, N. M.

1986-01-01

Previous studies while demonstrating the presence of blood group isoantigens on normal prostatic epithelium have failed to identify such antigens on malignant prostatic tissue. Using a series of blood group specific monoclonal antibodies directed towards the A, B, H and Y antigens we have reinvestigated blood group isoantigen expression in both benign prostatic hypertrophy and prostatic adenocarcinoma. Results obtained from areas of benign prostatic hypertrophy are in broad agreement with those published however though we were unable to detect either A or B blood group isoantigens Type 2H and Y isoantigens were identified in 10 of the 12 tumours. These findings, while differing from previously reported results, lend support to the suggested connection between ontogenesis, oncogenesis and blood group isoantigen expression and also support the proposed link between Type 2 structures and malignant transformation. Images Figure 1 Figure 2 PMID:2421753

Are Key Principles for improved health technology assessment supported and used by health technology assessment organizations?

PubMed

Neumann, Peter J; Drummond, Michael F; Jönsson, Bengt; Luce, Bryan R; Schwartz, J Sanford; Siebert, Uwe; Sullivan, Sean D

2010-01-01

Previously, our group-the International Working Group for HTA Advancement-proposed a set of fifteen Key Principles that could be applied to health technology assessment (HTA) programs in different jurisdictions and across a range of organizations and perspectives. In this commentary, we investigate the extent to which these principles are supported and used by fourteen selected HTA organizations worldwide. We find that some principles are broadly supported: examples include being explicit about HTA goals and scope; considering a wide range of evidence and outcomes; and being unbiased and transparent. Other principles receive less widespread support: examples are addressing issues of generalizability and transferability; being transparent on the link between HTA findings and decision-making processes; considering a full societal perspective; and monitoring the implementation of HTA findings. The analysis also suggests a lack of consensus in the field about some principles--for example, considering a societal perspective. Our study highlights differences in the uptake of key principles for HTA and indicates considerable room for improvement for HTA organizations to adopt principles identified to reflect good HTA practices. Most HTA organizations espouse certain general concepts of good practice--for example, assessments should be unbiased and transparent. However, principles that require more intensive follow-up--for example, monitoring the implementation of HTA findings--have received little support and execution.

Nursing home queues and home health users.

PubMed

Swan, J H; Benjamin, A E

1993-01-01

Home health market growth suggests the need for models explaining home health utilization. We have previously explained state-level Medicare home health visits with reference to nursing home markets. Here we introduce a model whereby state-level Medicare home health use is a function of nursing home queues and other demand and supply factors. Medicare home health users per state population is negatively related to nursing home bed stock, positively to Medicaid eligibility levels and to Medicaid nursing home recipients per population, as well as to various other demand and supply measures. This explanation of home health users explains previously-reported findings for home health visits. The findings support the argument that home health use is explained by factors affecting lengths of nursing home queues.

Family, friends, and 12-month PTSD among African Americans.

PubMed

Nguyen, Ann W; Chatters, Linda M; Taylor, Robert Joseph; Levine, Debra Siegel; Himle, Joseph A

2016-08-01

Despite a growing literature on the influence of social support on mental health, little is known about the relationship between social support and specific psychiatric disorders for African Americans, such as PTSD. This study investigated the relationship between social support, negative interaction with family and 12-month PTSD among African Americans. Analyses were based on a nationally representative sample of African Americans from the National Survey of American Life (n = 3315). Social support variables included emotional support from family, frequency of contact with family and friends, subjective closeness with family and friends, and negative interactions with family. Results indicated that emotional support from family is negatively associated with 12-month PTSD while negative interaction with family is predictive of 12-month PTSD. Additionally, a significant interaction indicated that high levels of subjective closeness to friends could offset the impact of negative family interactions on 12-month PTSD. Overall, study results converged with previously established findings indicating that emotional support from family is associated with 12-month PTSD, while, negative interaction with family is associated with increased risk of 12-month PTSD. The findings are discussed in relation to prior research on the unique association between social support and mental health among African Americans.

Social Support and Social Anxiety in Use and Perceptions of Online Mental Health Resources: Exploring Social Compensation and Enhancement.

PubMed

Ruppel, Erin K; McKinley, Christopher J

2015-08-01

This study used the frameworks of social compensation and social enhancement to examine how social anxiety and social support were related to college students' (N=443) use and perceptions of online mental health resources (Web sites and online support groups). Potential interactions between social support and social anxiety were also examined. Consistent with the social compensation hypothesis, perceived usefulness of Web sites was positively associated with social support. Perceived usefulness of online support groups was positively associated with social support when participants reported average or high, but not low, social anxiety. In contrast, previous use of Web sites was consistent with the social compensation hypothesis. Participants who reported less social support were more likely to have used a Web site for a mental or emotional problem. These findings suggest that college students' use and perceptions of online mental health resources vary as a function of social support and social anxiety, and that patterns suggestive of social compensation and social enhancement depend on whether perceptions or actual use of resources are examined. Combined with the significant interaction between social support and social anxiety on perceived usefulness of online support groups, these findings highlight the potential complexity of social compensation and enhancement phenomena.

Trichomonas vaginalis infection and risk of prostate cancer: associations by disease aggressiveness and race/ethnicity in the PLCO Trial.

PubMed

Marous, Miguelle; Huang, Wen-Yi; Rabkin, Charles S; Hayes, Richard B; Alderete, John F; Rosner, Bernard; Grubb, Robert L; Winter, Anke C; Sutcliffe, Siobhan

2017-08-01

Results from previous sero-epidemiologic studies of Trichomonas vaginalis infection and prostate cancer (PCa) support a positive association between this sexually transmitted infection and aggressive PCa. However, findings from previous studies are not entirely consistent, and only one has investigated the possible relation between T. vaginalis seropositivity and PCa in African-American men who are at highest risk of both infection and PCa. Therefore, we examined this possible relation in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial, including separate analyses for aggressive PCa and African-American men. We included a sample of participants from a previous nested case-control study of PCa, as well as all additional Caucasian, aggressive, and African-American cases diagnosed since the previous study (total n = 438 Gleason 7 Caucasian cases, 487 more advanced Caucasian cases (≥Gleason 8 or stage III/IV), 201 African-American cases, and 1216 controls). We tested baseline sera for T. vaginalis antibodies. No associations were observed for risk of Gleason 7 (odds ratio (OR) = 0.87, 95% confidence interval (CI) 0.55-1.37) or more advanced (OR = 0.90, 95% CI 0.58-1.38) PCa in Caucasian men, or for risk of any PCa (OR = 1.06, 95% CI 0.67-1.68) in African-American men. Our findings do not support an association between T. vaginalis infection and PCa.

Exploring moderators of the relationship between physical activity behaviors and television viewing in elementary school children.

PubMed

Smith, Nicole E I; Rhodes, Ryan E; Naylor, Patti-Jean; McKay, Heather A

2008-01-01

Previous research suggests that there is limited evidence to support a negative association between physical activity (PA) behaviors and television (TV) viewing time in children. The purpose of this study was to extend the research involving PA-TV viewing relationships and to explore potential moderators, including gender, ethnicity, weekday/ weekend behaviors, structured/unstructured activities, and seasonal variability. A 9-month longitudinal design, across one school year, with assessments every 3 months. Elementary schools in the Vancouver and Richmond districts of British Columbia, Canada. Subjects. Subjects (N = 344; 47% female) were 9- to 11-year-old children who participated in a school-based PA initiative from September 2003 to June 2004. Not applicable. Assessments of PA were measured using the Physical Activity Questionnaire for Children. TV viewing time and structured PA were measured using a self-report questionnaire. Basic descriptives, Pearson r bivariate correlations and moderated multiple regressions with mean centered variables. No significant interaction effects were found for any of the proposed moderators. Null bivariate correlations are supportive of findings in previous literature. Our results did not find support for PA-TV viewing relations, regardless of gender, ethnicity, structured PA, and seasonal variability. PA interventions aimed at modifying sedentary behaviors, such as TV viewing, may not be warranted.

A First Look at the 5Essentials in Illinois Schools. Research Report

ERIC Educational Resources Information Center

Klugman, Joshua; Gordon, Molly F.; Sebring, Penny Bender; Sporte, Susan E.

2015-01-01

In the first comprehensive analysis of Illinois' statewide survey of school climate and learning conditions, this report finds systematic differences among schools in the degree to which students and teachers report strength in the five essential supports. Previous University of Chicago Consortium on Chicago School Research (UChicago CCSR)…

Women, Higher Education and Family Capital: "I Could Not Have Done It without My Family!"

ERIC Educational Resources Information Center

Webber, Louise Anne

2017-01-01

Previous research suggests that through engagement with higher education (HE), mature female students experience identity change and transformation which could lead to conflict and strain on family relationships. This paper analyses the links between family support and students' feelings of success. The findings are based on qualitative research…

Information Technology Research: Investing in Our Future. Report to the President.

ERIC Educational Resources Information Center

National Coordination Office for Information Technology Research and Development, Arlington, VA.

This is the final report on future directions for Federal support of research and development (R&D) for information technology. This report adds detail to the findings and recommendations in the interim report dated August 1998, and strengthens previous recommendations regarding the importance of social and economic research on the impacts of…

Does Maternal Employment Following Childbirth Support or Inhibit Low-Income Children's Long-Term Development?

ERIC Educational Resources Information Center

Coley, Rebekah Levine; Lombardi, Caitlin McPherran

2013-01-01

This study assessed whether previous findings linking early maternal employment to lower cognitive and behavioral skills among middle-class and White children generalized to other groups. Using a representative sample of urban, low-income, predominantly African American and Hispanic families ("n" = 444), ordinary least squares regression…

Confirmatory Factor Analysis of the WISC-IV in a Hospital Referral Sample

ERIC Educational Resources Information Center

Devena, Sarah E.; Gay, Catherine E.; Watkins, Marley W.

2013-01-01

Confirmatory factor analysis was used to determine the factor structure of the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) scores of 297 children referred to a children's hospital in the Southwestern United States. Results support previous findings that indicate the WISC-IV is best represented by a direct hierarchical…

Math Shelf: A Randomized Trial of a Prekindergarten Tablet Number Sense Curriculum

ERIC Educational Resources Information Center

Schacter, John; Shih, Jeff; Allen, Charles M.; DeVaul, Lina; Adkins, Amy B.; Ito, Taro; Jo, Booil

2016-01-01

Research Findings: Effective preschool mathematics instruction is especially important for low-income children. Previous research demonstrates that low-income children enter kindergarten behind their middle-income peers. They receive less mathematics support at home and from public preschools. The aim of this study was to test Math Shelf, a tablet…

Psychometric Evaluation of the Fear of Positive Evaluation Scale in Patients With Social Anxiety Disorder

PubMed Central

Weeks, Justin W.; Heimberg, Richard G.; Rodebaugh, Thomas L.; Goldin, Philippe R.; Gross, James J.

2014-01-01

The Fear of Positive Evaluation Scale (FPES; Weeks, Heimberg, & Rodebaugh, 2008) was designed to assess fear of positive evaluation, a proposed cognitive component of social anxiety. Although previous findings on the psychometric properties of the FPES have been highly encouraging, only one previous study has examined the psychometric profile of the FPES in a sample of patients with social anxiety disorder (Fergus et al., 2009). The primary purpose of the present study was to conduct a large multi-site examination of the psychometric profile of the FPES among patients with a principal diagnosis of social anxiety disorder (n = 226; generalized subtype: 97.8%). Responses of non-anxious control participants (n = 42) were also examined. The factorial validity, internal consistency, test-retest reliability, construct validity, and treatment sensitivity of the FPES were strongly supported by our findings. Furthermore, an FPES cutoff score was identified for distinguishing levels of fear of positive evaluation characteristic of patients with social anxiety disorder from those characteristic of the control group. Results provide additional support for the psychometric properties of the FPES in clinical samples. PMID:21966932

Cancer Communication on Social Media: Examining How Cancer Caregivers Use Facebook for Cancer-Related Communication.

PubMed

Gage-Bouchard, Elizabeth A; LaValley, Susan; Mollica, Michelle; Beaupin, Lynda Kwon

Americans are increasingly using social media (such as Facebook, YouTube, and Twitter) for health-related communication. Much of the previous research on social media and health communication has focused on Facebook groups related to a specific disease or Facebook pages related to an advocacy organization. Less is known about how people communicate about cancer on personal Facebook pages. In this study, we expand upon previous research by examining how cancer caregivers use personal Facebook pages for cancer-related communication. We examined themes in cancer-related exchanges through a content analysis of 12 months of data from 18 publically available Facebook pages hosted by parents of children with acute lymphoblastic leukemia (15 852 total posts). Six themes emerged: (1) documenting the cancer journey, (2) sharing emotional strain associated with caregiving, (3) promoting awareness and advocacy about pediatric cancer, (4) fundraising, (5) mobilizing support, and (6) expressing gratitude for support. Building upon previous research documenting the increasing use of social media for health-related communication and support, our findings show that personal Facebook pages offer a platform for cancer caregivers to share their cancer-related experiences, promote advocacy and awareness, and mobilize social support. Providers must recognize the importance of social media as a vehicle for support and communication for families of children with cancer. Nurses should educate parents on how to appraise information obtained through Facebook using evidence-based guidelines. Providers can encourage caregivers to use Facebook as a tool for communication, information, and support.

Identifying and ranking implicit leadership strategies to promote evidence-based practice implementation in addiction health services.

PubMed

Guerrero, Erick G; Padwa, Howard; Fenwick, Karissa; Harris, Lesley M; Aarons, Gregory A

2016-05-14

Despite a solid research base supporting evidence-based practices (EBPs) for addiction treatment such as contingency management and medication-assisted treatment, these services are rarely implemented and delivered in community-based addiction treatment programs in the USA. As a result, many clients do not benefit from the most current and efficacious treatments, resulting in reduced quality of care and compromised treatment outcomes. Previous research indicates that addiction program leaders play a key role in supporting EBP adoption and use. The present study expanded on this previous work to identify strategies that addiction treatment program leaders report using to implement new practices. We relied on a staged and iterative mixed-methods approach to achieve the following four goals: (a) collect data using focus groups and semistructured interviews and conduct analyses to identify implicit managerial strategies for implementation, (b) use surveys to quantitatively rank strategy effectiveness, (c) determine how strategies fit with existing theories of organizational management and change, and (d) use a consensus group to corroborate and expand on the results of the previous three stages. Each goal corresponded to a methodological phase, which included data collection and analytic approaches to identify and evaluate leadership interventions that facilitate EBP implementation in community-based addiction treatment programs. Findings show that the top-ranked strategies involved the recruitment and selection of staff members receptive to change, offering support and requesting feedback during the implementation process, and offering in vivo and hands-on training. Most strategies corresponded to emergent implementation leadership approaches that also utilize principles of transformational and transactional leadership styles. Leadership behaviors represented orientations such as being proactive to respond to implementation needs, supportive to assist staff members during the uptake of new practices, knowledgeable to properly guide the implementation process, and perseverant to address ongoing barriers that are likely to stall implementation efforts. These findings emphasize how leadership approaches are leveraged to facilitate the implementation and delivery of EBPs in publicly funded addiction treatment programs. Findings have implications for the content and structure of leadership interventions needed in community-based addiction treatment programs and the development of leadership interventions in these and other service settings.

Higher education experiences of students with autism spectrum disorder: challenges, benefits and support needs.

PubMed

Van Hees, Valérie; Moyson, Tinneke; Roeyers, Herbert

2015-06-01

The transition into higher education constitutes a precarious life stage for students with autism spectrum disorder (ASD). Research on how students with ASD navigate college life is needed for the development of adequate support. This study investigated the challenges and support needs of 23 students with ASD in higher education through semi-structured interviews. Data were analyzed following the principles of Grounded Theory. Students faced difficulties with new situations and unexpected changes, social relationships, problems with information processing and time management and had doubts about disclosure. Facing these challenges simultaneously in the domains of education, student life and daily (independent) living, had a major impact on students' well being. Besides these challenges, students also reported benefits that contributed to success in the three domains. They pointed out to a set of recommendations for support. These findings are linked with previous research and implications for higher education institutions are extrapolated on the basis of these findings.

A two-dimensional vibration analysis of piezoelectrically actuated microbeam with nonideal boundary conditions

NASA Astrophysics Data System (ADS)

Rezaei, M. P.; Zamanian, M.

2017-01-01

In this paper, the influences of nonideal boundary conditions (due to flexibility) on the primary resonant behavior of a piezoelectrically actuated microbeam have been studied, for the first time. The structure has been assumed to treat as an Euler-Bernoulli beam, considering the effects of geometric nonlinearity. In this work, the general nonideal supports have been modeled as a the combination of horizontal, vertical and rotational springs, simultaneously. Allocating particular values to the stiffness of these springs provides the mathematical models for the majority of boundary conditions. This consideration leads to use a two-dimensional analysis of the multiple scales method instead of previous works' method (one-dimensional analysis). If one neglects the nonideal effects, then this paper would be an effort to solve the two-dimensional equations of motion without a need of a combination of these equations using the shortening or stretching effect. Letting the nonideal effects equal to zero and comparing their results with the results of previous approaches have been demonstrated the accuracy of the two-dimensional solutions. The results have been identified the unique effects of constraining and stiffening of boundaries in horizontal, vertical and rotational directions. This means that it is inaccurate to suppose the nonideality of supports only in one or two of these directions like as previous works. The findings are of vital importance as a better prediction of the frequency response for the nonideal supports. Furthermore, the main findings of this effort can help to choose appropriate boundary conditions for desired systems.

Psychopathic traits modulate microstructural integrity of right uncinate fasciculus in a community population.

PubMed

Sobhani, Mona; Baker, Laura; Martins, Bradford; Tuvblad, Catherine; Aziz-Zadeh, Lisa

2015-01-01

Individuals with psychopathy possess emotional and behavioral abnormalities. Two neural regions, involved in behavioral control and emotion regulation, are often implicated: amygdala and ventromedial prefrontal cortex (VMPFC). Recently, in studies using adult criminal populations, reductions in microstructural integrity of the white matter connections (i.e., uncinate fasciculus (UF)) between these two neural regions have been discovered in criminals with psychopathy, supporting the notion of neural dysfunction in the amygdala-VMPFC circuit. Here, a young adult, community sample is used to assess whether psychopathic traits modulate microstructural integrity of UF, and whether this relationship is dependent upon levels of trait anxiety, which is sometimes used to distinguish subtypes of psychopathy. Results reveal a negative association between psychopathic traits and microstructural integrity of UF, supporting previous findings. However, no moderation of the relationship by trait anxiety was discovered. Findings provide further support for the notion of altered amygdala-VMPFC connectivity in association with higher psychopathic traits.

Factor structure of parent and teacher ratings of the ODD symptoms for Malaysian primary school children.

PubMed

Gomez, Rapson

2017-02-01

This present study used confirmatory factor analysis (CFA) to examine the applicability of one-, two- three- and second order Oppositional Defiant Disorder (ODD) factor models, proposed in previous studies, in a group of Malaysian primary school children. These models were primarily based on parent reports. In the current study, parent and teacher ratings of the ODD symptoms were obtained for 934 children. For both groups of respondents, the findings showing some support for all models examined, with most support for a second order model with Burke et al. (2010) three factors (oppositional, antagonistic, and negative affect) as the primary factors. The diagnostic implications of the findings are discussed. Copyright © 2016 Elsevier B.V. All rights reserved.

Seniors' uncertainty management of direct-to-consumer prescription drug advertising usefulness.

PubMed

DeLorme, Denise E; Huh, Jisu

2009-09-01

This study provides insight into seniors' perceptions of and responses to direct-to-consumer prescription drug advertising (DTCA) usefulness, examines support for DTCA regulation as a type of uncertainty management, and extends and gives empirical voice to previous survey results through methodological triangulation. In-depth interview findings revealed that, for most informants, DTCA usefulness was uncertain and this uncertainty stemmed from 4 sources. The majority had negative responses to DTCA uncertainty and relied on 2 uncertainty-management strategies: information seeking from physicians, and inferences of and support for some government regulation of DTCA. Overall, the findings demonstrate the viability of uncertainty management theory (Brashers, 2001, 2007) for mass-mediated health communication, specifically DTCA. The article concludes with practical implications and research recommendations.

Subcategories of restricted and repetitive behaviors in children with autism spectrum disorders

PubMed Central

Bishop, Somer L.; Hus, Vanessa; Duncan, Amie; Huerta, Marisela; Gotham, Katherine; Pickles, Andrew; Kreiger, Abba; Buja, Andreas; Lund, Sabata; Lord, Catherine

2012-01-01

Research suggests that restricted and repetitive behaviors (RRBs) can be subdivided into repetitive sensory motor (RSM) and insistence on Sameness (IS) behaviors. However, because the majority of previous studies have used the Autism Diagnostic Interview-Revised (ADI-R), it is not clear whether these subcategories reflect the actual organization of RRBs in ASD. Using data from the Simons Simplex Collection (n=1825), we examined the association between scores on the ADI-R and the Repetitive Behavior Scale-Revised (RBS-R). Analyses supported the construct validity of RSM and IS subcategories. As in previous studies, IS behaviors showed no relationship with IQ. These findings support the continued use of RRB subcategories, particularly IS behaviors, as a means of creating more behaviorally homogeneous subgroups of children with ASD. PMID:23065116

Is General or Alcohol-Specific Perceived Social Support Associated with Depression among Adults in Substance Use Treatment?

PubMed Central

Shorey, Ryan C.; Dawson, Anne E.; Haynes, Ellen; Strauss, Catherine; Elmquist, JoAnna; Anderson, Scott; Stuart, Gregory L.

2017-01-01

Alcohol use disorders are among the most common mental health disorders in the world and incur considerable costs for individuals and society. Previous research has demonstrated that Perceived social support (PSS) may decrease rates of depression and relapse in individuals seeking treatment for alcohol use. The current study developed and investigated a self-report measure for perceived social support for sobriety from alcohol (PSSA) in a sample of men and women in residential treatment for substance use (N = 231), and examined the relationship between general or alcohol-specific perceived social support and depression. Analyses demonstrated sound factor structure, reliability, and validity for the PSSA. Additionally, the new measure of PSS for alcohol sobriety was negatively and uniquely associated with depression, even after controlling for general PSS, enacted social support, and negative social interactions. Overall, findings demonstrated that the PSSA was associated with fewer depressive symptoms, even after accounting for other known correlates of depression. Future research should replicate and extend these findings and examine whether this new measure predicts abstinence from alcohol following treatment. PMID:27627959

Religion-based emotional social support mediates the relationship between intrinsic religiosity and mental health.

PubMed

Hovey, Joseph D; Hurtado, Gabriela; Morales, Lori R A; Seligman, Laura D

2014-01-01

Although previous research suggests that increased religiosity is associated with better mental health and many authors have conjectured that religion-based social support may help explain this connection, scant research has directly examined whether religion-based support mediates religiosity and mental health. The present study examined whether various dimensions of religion-based support (social interaction, instrumental, and emotional) mediated the relationship between religiosity and mental health in college students in the Midwest United States. As expected, of the support dimensions, perceived emotional support was the strongest predictor of decreased hopelessness, depression, and suicide behaviors; and the relationships among intrinsic religiosity and the mental health variables were fully mediated by emotional support. These findings provide strong support to the notion that the relationship between religiosity and mental health can be reduced to mediators such as social support. Research and theoretical implications are discussed.

Meta-Analysis of Inquiry-Based Instruction Research

NASA Astrophysics Data System (ADS)

Hasanah, N.; Prasetyo, A. P. B.; Rudyatmi, E.

2017-04-01

Inquiry-based instruction in biology has been the focus of educational research conducted by Unnes biology department students in collaboration with their university supervisors. This study aimed to describe the methodological aspects, inquiry teaching methods critically, and to analyse the results claims, of the selected four student research reports, grounded in inquiry, based on the database of Unnes biology department 2014. Four experimental quantitative research of 16 were selected as research objects by purposive sampling technique. Data collected through documentation study was qualitatively analysed regarding methods used, quality of inquiry syntax, and finding claims. Findings showed that the student research was still the lack of relevant aspects of research methodology, namely in appropriate sampling procedures, limited validity tests of all research instruments, and the limited parametric statistic (t-test) not supported previously by data normality tests. Their consistent inquiry syntax supported the four mini-thesis claims that inquiry-based teaching influenced their dependent variables significantly. In other words, the findings indicated that positive claims of the research results were not fully supported by good research methods, and well-defined inquiry procedures implementation.

A multi-site randomised controlled trial of evidence-based supported employment for adults with severe and persistent mental illness.

PubMed

Waghorn, Geoffrey; Dias, Shannon; Gladman, Beverley; Harris, Meredith; Saha, Sukanta

2014-12-01

The Individual Placement and Support (IPS) approach is an evidence-based form of supported employment for people with severe and persistent mental illness. This approach is not yet widely available in Australia even though there is mounting evidence of its generalisability outside the USA. One previous Australian randomised controlled trial found that IPS is effective for young people with first episode psychosis. The aim of the current trial was to assess the effectiveness of evidence-based supported employment when implemented for Australian adult consumers of public mental health services by utilising existing service systems. A four-site randomised control trial design (n = 208) was conducted in Brisbane (two sites), Townsville and Cairns. The intervention consisted of an IPS supported employment service hosted by a community mental health team. The control condition was delivered at each site by mental health teams referring consumers to other disability employment services in the local area. At 12 months, those in the IPS condition had 2.4 times greater odds of commencing employment than those in the control condition (42.5% vs. 23.5%). The conditions did not differ on secondary employment outcomes including job duration, hours worked, or job diversity. Attrition was higher than expected in both conditions with 28.4% completing the baseline interview but taking no further part in the study. The results support previous international findings that IPS-supported employment is more effective than non-integrated supported employment. IPS can be successfully implemented this way in Australia, but with a loss of effect strength compared to previous USA trials. © 2014 Occupational Therapy Australia.

Subsonic islands within a high-mass star-forming infrared dark cloud

NASA Astrophysics Data System (ADS)

Sokolov, Vlas; Wang, Ke; Pineda, Jaime E.; Caselli, Paola; Henshaw, Jonathan D.; Barnes, Ashley T.; Tan, Jonathan C.; Fontani, Francesco; Jiménez-Serra, Izaskun; Zhang, Qizhou

2018-03-01

High-mass star forming regions are typically thought to be dominated by supersonic motions. We present combined Very Large Array and Green Bank Telescope (VLA+GBT) observations of NH3 (1,1) and (2,2) in the infrared dark cloud (IRDC) G035.39-00.33, tracing cold and dense gas down to scales of 0.07 pc. We find that, in contrast to previous, similar studies of IRDCs, more than a third of the fitted ammonia spectra show subsonic non-thermal motions (mean line width of 0.71 km s-1), and sonic Mach number distribution peaks around ℳ = 1. As possible observational and instrumental biases would only broaden the line profiles, our results provide strong upper limits to the actual value of ℳ, further strengthening our findings of narrow line widths. This finding calls for a re-evaluation of the role of turbulent dissipation and subsonic regions in massive-star and cluster formation. Based on our findings in G035.39, we further speculate that the coarser spectral resolution used in the previous VLA NH3 studies may have inhibited the detection of subsonic turbulence in IRDCs. The reduced turbulent support suggests that dynamically important magnetic fields of the 1 mG order would be required to support against possible gravitational collapse. Our results offer valuable input into the theories and simulations that aim to recreate the initial conditions of high-mass star and cluster formation.

Goals of clinical ethics support: perceptions of Dutch healthcare institutions.

PubMed

Dauwerse, L; Abma, T A; Molewijk, B; Widdershoven, G

2013-12-01

In previous literature, ethicists mention several goals of Clinical Ethics Support (CES). It is unknown what key persons in healthcare institutions see as main--and sub-goals of CES. This article presents the goals of CES as perceived by board members and members of ethics support staff. This is part of a Dutch national research using a mixed methods design with questionnaires, focus groups and interviews. Quantitative and qualitative data were analyzed and combined in an iterative process. Four main clusters of goals were found: 1) encouraging an ethical climate, 2) fostering an accountable and transparent organization, 3) developing professionalism and a final goal, overarching the previous three, 4) good care. Most important sub-goals of CES were: attention for ethical issues, raising awareness of ethical issues, fostering ethical reflection and supporting employees. The article ends with a discussion on the desirability to further operationalize the general goal of good care, the context-boundedness of our findings and the need to relate goals of CES to the features of organizational cultures to further improve the integration of CES in healthcare institutions.

Learning through Supervision and Mentorship To Support the Development of Infants, Toddlers and Their Families: A Source Book.

ERIC Educational Resources Information Center

Fenichel, Emily, Ed.

Eighteen work group papers, several of which previously appeared in "Zero to Three," the Bulletin of the National Center for Infant Clinical Progams, are presented under four headings. Under the heading "Findings and Recommendations of ZERO TO THREE/National center for Clinical Infant Programs' Work Group on Supervision and…

The Connection between Lack of Support Service Use and Background Experience in Developmental Students

ERIC Educational Resources Information Center

Di Tommaso, Kathrynn

2011-01-01

This paper presents a follow-up to a previously published paper "The Connection between Role Model Relationships and Self-Direction in Developmental Students" and is based on findings from the same study. The study used observations and interviews to explore the ways in which a cohort of developmental writing students described their…

Information Assurance Tasks Supporting the Processing of Electronic Records Archives

DTIC Science & Technology

2007-03-01

3 Table 2. OpenVPN evaluation results...........................................................................................10 iv 1...operation of necessary security features and compare the network performance under OpenVPN (openvpn.net) operation with the network performance under no...VPN operation (non-VPN) in a gigabit network environment. The reason for selecting OpenVPN product was based on the previous findings of Khanvilkar

Initial thinning in red pine plantations.

Treesearch

John H. Cooley

1969-01-01

Response to thinning in six red pine plantations in Lower Michigan supported previous findings by showing basal area growth to vary little over a wide range of residual densities. Furthermore, the method of selecting trees for removal in the first thinning had little or no influence on basal area growth. However, the immediate effect of thinning on average stand...

Considering the Crossroads of Distance Education: The Experiences of Instructors as They Transitioned to Online or Blended Courses

ERIC Educational Resources Information Center

Hoffman, David D.

2016-01-01

In the short history of online education research, researchers studying teacher experiences regularly relied on anecdotal examples or small samples. In this research, we sought to support and enhance previous findings concerning the best practices in online education by performing randomly sampled, nationwide survey of online and blended course…

Influences on Personal Understanding: Intentions, Approaches to Learning, Perceptions of Assessment, and a "Meeting of Minds"

ERIC Educational Resources Information Center

Karagiannopoulou, Evangelia; Entwistle, Noel

2013-01-01

Using a case-study approach, interviews with four final-year psychology students showed different approaches to learning and varying experiences of teaching in courses assessed through open-book exams. Analysis of their experiences, supported by previous research findings, provided insights into the reasons for the contrasting approaches being…

Social support and maternal mental health at 4 months and 1 year postpartum: analysis from the All Our Families cohort.

PubMed

Hetherington, Erin; McDonald, Sheila; Williamson, Tyler; Patten, Scott B; Tough, Suzanne C

2018-06-19

Low social support is consistently associated with postpartum depression. Previous studies do not always control for previous mental health and do not consider what type of support (tangible, emotional, informational or positive social interaction) is most important. The objectives are: to examine if low social support contributes to subsequent risk of depressive or anxiety symptoms and to determine which type of support is most important. Data from the All Our Families longitudinal pregnancy cohort were used (n=3057). Outcomes were depressive or anxiety symptoms at 4 months and 1 year postpartum. Exposures were social support during pregnancy and at 4 months postpartum. Log binomial models were used to calculate risk ratios (RRs) and absolute risk differences, controlling for past mental health. Low total social support during pregnancy was associated with an increased risk of depressive symptoms (RR 1.50, 95% CI 1.24 to 1.82) and anxiety symptoms (RR 1.63, 95% CI 1.38 to 1.93) at 4 months postpartum. Low total social support at 4 months was associated with an increased risk of anxiety symptoms (RR 1.65, 95% CI 1.31 to 2.09) at 1 year. Absolute risk differences were largest among women with previous mental health challenges resulting in a number needed to treat of 5 for some outcomes. Emotional/informational support was the most important type of support for postpartum anxiety. Group prenatal care, prenatal education and peer support programmes have the potential to improve social support. Prenatal interventions studies are needed to confirm these findings in higher risk groups. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

Family, Friends, and 12-month PTSD among African Americans

PubMed Central

Nguyen, Ann W.; Chatters, Linda M.; Taylor, Robert Joseph; Levine, Debra Siegel; Himle, Joseph A.

2016-01-01

Purpose Despite a growing literature on the influence of social support on mental health, little is known about the relationship between social support and specific psychiatric disorders for African Americans, such as PTSD. This study investigated the relationship between social support, negative interaction with family and 12-month PTSD among African Americans. Methods Analyses were based on a nationally representative sample of African Americans from the National Survey of American Life (n=3,315). Social support variables included emotional support from family, frequency of contact with family and friends, subjective closeness with family and friends, and negative interactions with family. Results Results indicated that emotional support from family is negatively associated with 12-month PTSD while negative interaction with family is predictive of 12-month PTSD. Additionally, a significant interaction indicated that high levels of subjective closeness to friends could offset the impact of negative family interactions on 12-month PTSD. Conclusions Overall, study results converged with previously established findings indicating that emotional support from family is associated with 12-month PTSD, while, negative interaction with family is associated with increased risk of 12-month PTSD. The findings are discussed in relation to prior research on the unique association between social support and mental health among African Americans. PMID:27189209

Distinguishing source of autonomy support in relation to workers' motivation and self-efficacy.

PubMed

Jungert, Tomas; Koestner, Richard Frank; Houlfort, Nathalie; Schattke, Kaspar

2013-01-01

The purpose was to investigate the relationship between autonomy support by managers and co-workers and employees' work motivation and self-efficacy in two studies. In Study 1, a sample of 343 Swedish workers completed surveys, and in Study 2, we followed up with a subsample of 98 workers one year later. As in previous studies, managers support of autonomy was significantly positively related to workers' outcomes. However, the results of Study 1 also showed that co-worker autonomy support was related to these outcomes over and above the effects of manager support. Study 2 showed that changes in autonomy support from co-workers during one year significantly predicted motivation and self-efficacy one year later, while change in support from managers was unrelated to outcomes later. These findings provide evidence for the importance of both vertical and horizontal sources of support.

'I just don't fit anywhere': support experiences and future support needs of individuals with Asperger syndrome in middle adulthood.

PubMed

Griffith, Gemma M; Totsika, Vasiliki; Nash, Susie; Hastings, Richard P

2012-09-01

The experiences of individuals in middle adulthood with Asperger syndrome have been the subject of little previous research, especially in terms of their experience of support services. In the present research, 11 adults with Asperger syndrome were interviewed. Interpretative phenomenological analysis (IPA) was used to interpret the interviews. Four themes emerged from the analysis: living with Asperger syndrome; employment issues; experiences with mainstream support; and future steps towards supporting adults with Asperger syndrome. The findings highlighted the anxiety, depression, and communication difficulties that people with Asperger syndrome may experience. Much of the available support is perceived as unsuitable for individuals with Asperger syndrome. All participants wanted to remain as independent as possible, and believed an individualized approach to support would be greatly beneficial. Recommendations are made for future practice to help support adults with Asperger syndrome.

New insights from Thailand into the maternal genetic history of Mainland Southeast Asia.

PubMed

Kutanan, Wibhu; Kampuansai, Jatupol; Brunelli, Andrea; Ghirotto, Silvia; Pittayaporn, Pittayawat; Ruangchai, Sukhum; Schröder, Roland; Macholdt, Enrico; Srikummool, Metawee; Kangwanpong, Daoroong; Hübner, Alexander; Arias, Leonardo; Stoneking, Mark

2018-02-26

Tai-Kadai (TK) is one of the major language families in Mainland Southeast Asia (MSEA), with a concentration in the area of Thailand and Laos. Our previous study of 1234 mtDNA genome sequences supported a demic diffusion scenario in the spread of TK languages from southern China to Laos as well as northern and northeastern Thailand. Here we add an additional 560 mtDNA genomes from 22 groups, with a focus on the TK-speaking central Thai people and the Sino-Tibetan speaking Karen. We find extensive diversity, including 62 haplogroups not reported previously from this region. Demic diffusion is still a preferable scenario for central Thais, emphasizing the expansion of TK people through MSEA, although there is also some support for gene flow between central Thai and native Austroasiatic speaking Mon and Khmer. We also tested competing models concerning the genetic relationships of groups from the major MSEA languages, and found support for an ancestral relationship of TK and Austronesian-speaking groups.

Primary care physicians’ experiences with electronic medical records

PubMed Central

Ludwick, Dave; Manca, Donna; Doucette, John

2010-01-01

OBJECTIVE To understand how remuneration and care setting affect the implementation of electronic medical records (EMRs). DESIGN Semistructured interviews were used to illicit descriptions from community-based family physicians (paid on a fee-for-service basis) and from urban, hospital, and academic family physicians (remunerated via alternative payment models or sessional pay for activities pertaining to EMR implementation). SETTING Small suburban community and large urban-, hospital-, and academic-based family medicine clinics in Alberta. All participants were supported by a jurisdictional EMR certification funding mechanism. PARTICIPANTS Physicians who practised in 1 or a combination of the above settings and had experience implementing and using EMRs. METHODS Purposive and maximum variation sampling was used to obtain descriptive data from key informants through individually conducted semistructured interviews. The interview guide, which was developed from key findings of our previous literature review, was used in a previous study of community-based family physicians on this same topic. Field notes were analyzed to generate themes through a comparative immersion approach. MAIN FINDINGS Physicians in urban, hospital, and academic settings leverage professional working relationships to investigate EMRs, a resource not available to community physicians. Physicians in urban, hospital, and academic settings work in larger interdisciplinary teams with a greater need for interdisciplinary care coordination, EMR training, and technical support. These practices were able to support the cost of project management or technical support resources. These physicians followed a planned system rollout approach compared with community physicians who installed their systems quickly and required users to transition to the new system immediately. Electronic medical records did not increase, or decrease, patient throughput. Physicians developed ways of including patients in the note-taking process. CONCLUSION We studied physicians’ procurement approaches under various payment models. Our findings do not suggest that one remuneration approach supports EMR adoption any more than another. Rather, this study suggests that stronger physician professional networks used in information gathering, more complete training, and in-house technical support might be more influential than remuneration in facilitating the EMR adoption experience. PMID:20090083

Professionals' views on mental health service users' education: challenges and support.

PubMed

Nieminen, I; Kaunonen, M

2017-02-01

WHAT IS KNOWN ON THE SUBJECT?: Mental health service users (MHSUs) may experience disruptions in their education. However, education has been shown to have a positive influence on their recovery, potentially offering them broader employment opportunities. The literature suggests that providing support for MHSUs in their educational efforts may be beneficial and is wished for by the service users themselves. However, there is a lack of mental health professionals' views on the topic in the setting of a community mental health centre. WHAT DOES THIS PAPER ADD TO THE EXISTING KNOWLEDGE?: In the perception of mental health professionals, the predominance of disease in the life of MHSUs and their marginalization may form barriers to their success in education. Professionals can support MHSUs in their educational efforts by strengthening the MHSUs' internal resources and creating a supportive environment with professional expertise available. A service user-centred education might further help MHSUs to achieve their educational goals. Our findings confirm previous knowledge of a recovery-oriented approach to supporting MHSUs' education. This study explored the topic from the professionals' perspective in the context of community mental health centres, which is a fresh view in the research literature. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: The findings suggest which types of support professionals perceive to be required for MHSUs to advance their studies. Knowledge of adequate forms of support can be applied in the mental health nursing practice to develop support measures for service users to advance in their studies. All levels of the community mental health centres should be aware of and adopt a recovery-oriented approach. MHSUs and professionals need to have a shared opinion on the definition of recovery orientation. This requires mutual discussion and the more active involvement of MHSUs in the design of their own rehabilitation process. Introduction Studies show the importance of providing support for mental health service users' (MHSUs') education. However, none of these studies explored this support in the community mental health centre setting. The range of MHSUs' educational activities identified in this study varied from participation in courses at the mental health centres to independent studies at different levels of education outside the centres. Aim (1) How do mental health professionals perceive the challenges that may limit service users' potential when they apply for, and complete, their education? (2) How do the professionals describe the methods of rehabilitation aimed at supporting the service users in achieving their educational goals? Method The data were collected from 14 mental health professionals using focus group interviews. Inductive content analysis was then performed. Results Professionals perceive that the predominance of disease and marginalization may be barriers to MHSUs' success in education. Strengthening the MHSUs' internal resources, creating a supportive environment with professional expertise available and service user-centred education appeared to support the MHSUs' educational achievements. Our findings confirm previous knowledge of a recovery-oriented approach to support MHSUs' education. However, professionals' views on this topic in the context of community mental health centres have not been investigated previously. Discussion Professionals perceive that a recovery-oriented approach to rehabilitation may support MHSUs in their educational efforts. Implications for practice A recovery-oriented approach should be adopted by all levels of the community mental health centres. MHSUs and professionals need to have a shared opinion on the definition of recovery orientation. This requires mutual discussion and a more active involvement of MHSUs in the design of their own rehabilitation process. © 2017 John Wiley & Sons Ltd.

Perceived social support buffers the impact of PTSD symptoms on suicidal behavior: implications into suicide resilience research.

PubMed

Panagioti, M; Gooding, P A; Taylor, P J; Tarrier, N

2014-01-01

A growing body of research has highlighted the importance of identifying resilience factors against suicidal behavior. However, no previous study has investigated potential resilience factors among individuals with Posttraumatic Stress Disorder (PTSD). The aim of this study was to examine whether perceived social support buffered the impact of PTSD symptoms on suicidal behavior. Fifty-six individuals who had previously been exposed to a traumatic event and reported PTSD symptoms in the past month (n = 34, 60.7% participants met the full criteria for a current PTSD diagnosis) completed a range of self-report measures assessing PTSD symptoms, perceived social support and suicidal behavior. Hierarchical regression analyses were conducted to examine whether perceived social support moderates the effects of PTSD symptoms on suicidal behavior. The results showed that perceived social support moderated the impact of the number and severity of PTSD symptoms on suicidal behavior. For those who perceived themselves as having high levels of social support, an increased number and severity of PTSD symptoms were less likely to lead to suicidal behavior. The current findings suggest that perceived social support might confer resilience to individuals with PTSD and counter the development of suicidal thoughts and behaviors. The milieu of social support potentially provides an area of further research and an important aspect to incorporate into clinical interventions for suicidal behavior in PTSD or trauma populations. © 2013.

How Does Student Educational Background Affect Transition into the First Year of Veterinary School? Academic Performance and Support Needs in University Education.

PubMed

Rutland, Catrin S; Dobbs, Heidi; Tötemeyer, Sabine

The first year of university is critical in shaping persistence decisions (whether students continue with and complete their degrees) and plays a formative role in influencing student attitudes and approaches to learning. Previous educational experiences, especially previous university education, shape the students' ability to adapt to the university environment and the study approaches they require to perform well in highly demanding professional programs such as medicine and veterinary medicine. The aim of this research was to explore the support mechanisms, academic achievements, and perception of students with different educational backgrounds in their first year of veterinary school. Using questionnaire data and examination grades, the effects upon perceptions, needs, and educational attainment in first-year students with and without prior university experience were analyzed to enable an in-depth understanding of their needs. Our findings show that school leavers (successfully completed secondary education, but no prior university experience) were outperformed in early exams by those who had previously graduated from university (even from unrelated degrees). Large variations in student perceptions and support needs were discovered between the two groups: graduate students perceived the difficulty and workload as less challenging and valued financial and IT support. Each student is an individual, but ensuring that universities understand their students and provide both academic and non-academic support is essential. This research explores the needs of veterinary students and offers insights into continued provision of support and improvements that can be made to help students achieve their potential and allow informed "Best Practice."

A randomized controlled trial of a supported employment program for persons with long-term mental illness in Hong Kong.

PubMed

Kin Wong, Kenny; Chiu, Rose; Tang, Betty; Mak, Donald; Liu, Joanne; Chiu, Siu Ning

2008-01-01

Supported employment is an evidence-based practice that has proved to be consistently more effective than conventional vocational rehabilitation in helping people with severe mental illness find and sustain competitive employment. Most research on the effectiveness of supported employment comes from the United States. This study examined the effectiveness and applicability of a supported employment program based on the individual placement and support model in a Hong Kong setting. Ninety-two unemployed individuals with long-term mental illness who desired competitive employment were randomly assigned to either a supported employment program or a conventional vocational rehabilitation program and followed up for 18 months. Both vocational and nonvocational outcomes were measured. Over the 18-month study period, compared with participants in the conventional vocational rehabilitation program, those in the supported employment group were more likely to work competitively (70% versus 29%; odds ratio=5.63, 95% confidence interval=2.28-13.84), held a greater number of competitive jobs, earned more income, worked more days, and sustained longer job tenures. Repeated-measures analysis of variance found no substantive differences between participants in the two groups and no significant change from baseline over time for psychiatric symptoms and self-perceived quality of life. Consistent with previous research findings in the United States, the supported employment program was more effective than the conventional vocational rehabilitation program in helping individuals with long-term mental illness find and sustain competitive employment in a Hong Kong setting. The supported employment program based on the individual placement and support model can thus be recommended for wider use in local mental health practice.

Free to help? An experiment on free will belief and altruism.

PubMed

Harms, Job; Liket, Kellie; Protzko, John; Schölmerich, Vera

2017-01-01

How does belief in free will affect altruistic behavior? In an online experiment we undermine subjects' belief in free will through a priming task. Subjects subsequently conduct a series of binary dictator games in which they can distribute money between themselves and a charity that supports low-income people in developing countries. In each decision task, subjects choose between two different distributions, one of which is more generous towards the charity. In contrast to previous experiments that report a negative effect of undermining free will on honest behavior and self-reported willingness to help, we find an insignificant average treatment effect. However, we do find that our treatment reduces charitable giving among non-religious subjects, but not among religious subjects. This could be explained by our finding that religious subjects associate more strongly with social norms that prescribe helping the poor, and might therefore be less sensitive to the effect of reduced belief in free will. Taken together, these findings indicate that the effects of free will belief on prosocial behavior are more nuanced than previously suggested.

Free to help? An experiment on free will belief and altruism

PubMed Central

Liket, Kellie; Protzko, John; Schölmerich, Vera

2017-01-01

How does belief in free will affect altruistic behavior? In an online experiment we undermine subjects’ belief in free will through a priming task. Subjects subsequently conduct a series of binary dictator games in which they can distribute money between themselves and a charity that supports low-income people in developing countries. In each decision task, subjects choose between two different distributions, one of which is more generous towards the charity. In contrast to previous experiments that report a negative effect of undermining free will on honest behavior and self-reported willingness to help, we find an insignificant average treatment effect. However, we do find that our treatment reduces charitable giving among non-religious subjects, but not among religious subjects. This could be explained by our finding that religious subjects associate more strongly with social norms that prescribe helping the poor, and might therefore be less sensitive to the effect of reduced belief in free will. Taken together, these findings indicate that the effects of free will belief on prosocial behavior are more nuanced than previously suggested. PMID:28282393

Big-Data Based Decision-Support Systems to Improve Clinicians' Cognition.

PubMed

Roosan, Don; Samore, Matthew; Jones, Makoto; Livnat, Yarden; Clutter, Justin

2016-01-01

Complex clinical decision-making could be facilitated by using population health data to inform clinicians. In two previous studies, we interviewed 16 infectious disease experts to understand complex clinical reasoning. For this study, we focused on answers from the experts on how clinical reasoning can be supported by population-based Big-Data. We found cognitive strategies such as trajectory tracking, perspective taking, and metacognition has the potential to improve clinicians' cognition to deal with complex problems. These cognitive strategies could be supported by population health data, and all have important implications for the design of Big-Data based decision-support tools that could be embedded in electronic health records. Our findings provide directions for task allocation and design of decision-support applications for health care industry development of Big data based decision-support systems.

Big-Data Based Decision-Support Systems to Improve Clinicians’ Cognition

PubMed Central

Roosan, Don; Samore, Matthew; Jones, Makoto; Livnat, Yarden; Clutter, Justin

2016-01-01

Complex clinical decision-making could be facilitated by using population health data to inform clinicians. In two previous studies, we interviewed 16 infectious disease experts to understand complex clinical reasoning. For this study, we focused on answers from the experts on how clinical reasoning can be supported by population-based Big-Data. We found cognitive strategies such as trajectory tracking, perspective taking, and metacognition has the potential to improve clinicians’ cognition to deal with complex problems. These cognitive strategies could be supported by population health data, and all have important implications for the design of Big-Data based decision-support tools that could be embedded in electronic health records. Our findings provide directions for task allocation and design of decision-support applications for health care industry development of Big data based decision-support systems. PMID:27990498

Gravity or turbulence? - III. Evidence of pure thermal Jeans fragmentation at ˜0.1 pc scale

NASA Astrophysics Data System (ADS)

Palau, Aina; Ballesteros-Paredes, Javier; Vázquez-Semadeni, Enrique; Sánchez-Monge, Álvaro; Estalella, Robert; Fall, S. Michael; Zapata, Luis A.; Camacho, Vianey; Gómez, Laura; Naranjo-Romero, Raúl; Busquet, Gemma; Fontani, Francesco

2015-11-01

We combine previously published interferometric and single-dish data of relatively nearby massive dense cores that are actively forming stars to test whether their `fragmentation level' is controlled by turbulent or thermal support. We find no clear correlation between the fragmentation level and velocity dispersion, nor between the observed number of fragments and the number of fragments expected when the gravitationally unstable mass is calculated including various prescriptions for `turbulent support'. On the other hand, the best correlation is found for the case of pure thermal Jeans fragmentation, for which we infer a core formation efficiency around 13 per cent, consistent with previous works. We conclude that the dominant factor determining the fragmentation level of star-forming massive dense cores at 0.1 pc scale seems to be thermal Jeans fragmentation.

Communication competence, social support, and depression among college students: a model of facebook and face-to-face support network influence.

PubMed

Wright, Kevin B; Rosenberg, Jenny; Egbert, Nicole; Ploeger, Nicole A; Bernard, Daniel R; King, Shawn

2013-01-01

This study examined the influence of the social networking site Facebook and face-to-face support networks on depression among (N = 361) college students. The authors used the Relational Health Communication Competence Model as a framework for examining the influence of communication competence on social support network satisfaction and depression. Moreover, they examined the influence of interpersonal and social integrative motives as exogenous variables. On the basis of previous work, the authors propose and test a theoretical model using structural equation modeling. The results indicated empirical support for the model, with interpersonal motives predicting increased face-to-face and computer-mediated competence, increased social support satisfaction with face-to-face and Facebook support, and lower depression scores. The implications of the findings for theory, key limitations, and directions for future research are discussed.

Life Course Stage and Social Support Mobilization for End-of-Life Caregivers.

PubMed

LaValley, Susan A; Gage-Bouchard, Elizabeth A

2018-04-01

Caregivers of terminally ill patients are at risk for anxiety, depression, and social isolation. Social support from friends, family members, neighbors, and health care professionals can potentially prevent or mitigate caregiver strain. While previous research documents the importance of social support in helping end-of-life caregivers cope with caregiving demands, little is known about differences in social support experiences among caregivers at different life course stages. Using life course theory, this study analyzes data from in-depth interviews with 50 caregivers of patients enrolled in hospice services to compare barriers to mobilizing social support among caregivers at two life course stages: midlife caregivers caring for parents and older adult caregivers caring for spouses/partners. Older adult caregivers reported different barriers to mobilizing social support compared with midlife caregivers. Findings enhance the understanding of how caregivers' life course stage affects their barriers to mobilization of social support resources.

Culture, distress, and oxytocin receptor polymorphism (OXTR) interact to influence emotional support seeking.

PubMed

Kim, Heejung S; Sherman, David K; Sasaki, Joni Y; Xu, Jun; Chu, Thai Q; Ryu, Chorong; Suh, Eunkook M; Graham, Kelsey; Taylor, Shelley E

2010-09-07

Research has demonstrated that certain genotypes are expressed in different forms, depending on input from the social environment. To examine sensitivity to cultural norms regarding emotional support seeking as a type of social environment, we explored the behavioral expression of oxytocin receptor polymorphism (OXTR) rs53576, a gene previously related to socio-emotional sensitivity. Seeking emotional support in times of distress is normative in American culture but not in Korean culture. Consequently, we predicted a three-way interaction of culture, distress, and OXTR genotype on emotional support seeking. Korean and American participants (n = 274) completed assessments of psychological distress and emotional support seeking and were genotyped for OXTR. We found the predicted three-way interaction: among distressed American participants, those with the GG/AG genotypes reported seeking more emotional social support, compared with those with the AA genotype, whereas Korean participants did not differ significantly by genotype; under conditions of low distress, OXTR groups did not differ significantly in either cultural group. These findings suggest that OXTR rs53576 is sensitive to input from the social environment, specifically cultural norms regarding emotional social support seeking. These findings also indicate that psychological distress and culture are important moderators that shape behavioral outcomes associated with OXTR genotypes.

Task difficulty, risk, effort and comfort in a simulated driving task--Implications for Risk Allostasis Theory.

PubMed

Lewis-Evans, Ben; Rothengatter, Talib

2009-09-01

Risk Allostasis Theory states that drivers seek to maintain a feeling of risk within a preferred range [Fuller, R., 2008. What drives the driver? Surface tensions and hidden consensus. In: Keynote at the 4th International Conference on Traffic and Transport Psychology, Washington, DC, August 31-September 4, 2008]. Risk Allostasis Theory is the latest version of Task-Difficulty Homeostasis theory, and is in part based on the findings of experiments where participants were asked to rate the task difficulty, feeling of risk and chance of collision of scenes shown in digitally altered video clips [Fuller, R., McHugh, C., Pender, S., 2008b. Task difficulty and risk in the determination of driver behaviour. Revue européenne de psychologie appliqée 58, 13-21]. The focus of the current research was to expand upon the previous video based experiments using a driving simulator. This allowed participants to be in control of the vehicle rather than acting as passive observers, as well as providing additional speed cues. The results support previous findings that ratings of task difficulty and feeling of risk are related, and that they are also highly related to ratings of effort and moderately related to ratings of comfort and habit. However, the linearly increasing trend for task difficulty and feeling of risk described by the previous research was not observed: instead the findings of this experiment support a threshold effect where ratings of risk (feeling of and chance of loss of control/collision), difficulty, effort, and comfort go through a period of stability and only start to increase once a certain threshold has been crossed. It is within the period of stability where subjective experience of risk and difficulty is low, or absent, that drivers generally prefer to operate.

Detection of Zika Virus in April 2013 Patient Samples, Rio de Janeiro, Brazil

PubMed Central

Borges dos Santos, Maria A.; Cerbino-Neto, José; Buonora, Sibelle N.; Souza, Thiago M.L.; de Oliveira, Raquel V.C.; Vizzoni, Alexandre; Barbosa-Lima, Giselle; Vieira, Yasmine R.; Silva de Lima, Marcondes; Hökerberg, Yara H. M.

2017-01-01

We tested 210 dengue virus‒negative samples collected from febrile patients during a dengue virus type 4 outbreak in Rio de Janeiro in April 2013 and found 3 samples positive for Zika virus. Our findings support previously published entomological data suggesting Zika virus was introduced into Brazil during October 2012–May 2013. PMID:28953451

MOLA Topography of Small Volcanoes in Tempe Terra and Ceraunius Fossae, Mars: Implications for Eruptive Styles

NASA Technical Reports Server (NTRS)

Wong, M. P.; Sakimoto, S. E. H.; Garvin, J. B.

2001-01-01

We use Mars Orbiter Laser Altimeter (MOLA) data to measure small volcanoes in the Tempe Terra and Ceraunius Fossae regions of Mars. We find that previous geometry estimates based on imagery alone are inaccurate, but MOLA data support image-based interpretations of eruptive style. Additional information is contained in the original extended abstract.

The Process of Auditory Distraction: Disrupted Attention and Impaired Recall in a Simulated Lecture Environment

ERIC Educational Resources Information Center

Zeamer, Charlotte; Fox Tree, Jean E.

2013-01-01

Literature on auditory distraction has generally focused on the effects of particular kinds of sounds on attention to target stimuli. In support of extensive previous findings that have demonstrated the special role of language as an auditory distractor, we found that a concurrent speech stream impaired recall of a short lecture, especially for…

Receptive Vocabulary, Cognitive Flexibility, and Inhibitory Control Differentially Predict Older and Younger Adults' Success Perceiving Speech by Talkers with Dysarthria

ERIC Educational Resources Information Center

Ingvalson, Erin M.; Lansford, Kaitlin L.; Fedorova, Valeriya; Fernandez, Gabriel

2017-01-01

Purpose: Previous research has demonstrated equivocal findings related to the effect of listener age on intelligibility ratings of dysarthric speech. The aim of the present study was to investigate the mechanisms that support younger and older adults' perception of speech by talkers with dysarthria. Method: Younger and older adults identified…

Methodological and Epistemological Issues on Linear Regression Applied to Psychometric Variables in Problem Solving: Rethinking Variance

ERIC Educational Resources Information Center

Stamovlasis, Dimitrios

2010-01-01

The aim of the present paper is two-fold. First, it attempts to support previous findings on the role of some psychometric variables, such as, M-capacity, the degree of field dependence-independence, logical thinking and the mobility-fixity dimension, on students' achievement in chemistry problem solving. Second, the paper aims to raise some…

Comparison of vacuum and gravity sap flows from paired sugar maple trees

Treesearch

H. Clay Smith; Carter B. Gibbs

1970-01-01

Paired sugar maple trees with single tapholes were used to compare sap yields from vacuum-pumping with sap yields from gravity flow. Results indicated that vacuum yields were approximately twice as great as gravity flows. These results support previous findings from studies in which vacuum and gravity were compared with two tapholes on the same tree.

Bodily attractiveness and egalitarianism are negatively related in males.

PubMed

Price, Michael E; Brown, Stuart; Dukes, Amber; Kang, Jinsheng

2015-02-09

Ancestrally, relatively attractive individuals and relatively formidable males may have had reduced incentives to be egalitarian (i.e., to act in accordance with norms promoting social equality). If selection calibrated one's egalitarianism to one's attractiveness/formidability, then such people may exhibit reduced egalitarianism ("observed egalitarianism") and be perceived by others as less egalitarian ("perceived egalitarianism") in modern environments. To investigate, we created 3D body models of 125 participants to use both as a source of anthropometric measurements and as stimuli to obtain ratings of bodily attractiveness and perceived egalitarianism. We also measured observed egalitarianism (via an economic "dictator" game) and indices of political egalitarianism (preference for socialism over capitalism) and "equity sensitivity." Results indicated higher egalitarianism levels in women than in men, and moderate-to-strong negative relationships between (a) attractiveness and observed egalitarianism among men, (b) attractiveness and perceived egalitarianism among both sexes, and (c) formidability and perceived egalitarianism among men. We did not find support for two previously-reported findings: that observed egalitarianism and formidability are negatively related in men, and that wealth and formidability interact to explain variance in male egalitarianism. However, this lack of support may have been due to differences in variable measurement between our study and previous studies.

Child maltreatment among U.S. Air Force parents deployed in support of Operation Iraqi Freedom/Operation Enduring Freedom.

PubMed

Rabenhorst, Mandy M; McCarthy, Randy J; Thomsen, Cynthia J; Milner, Joel S; Travis, Wendy J; Colasanti, Marie P

2015-02-01

This study examined child maltreatment perpetration among 99,697 active-duty U.S. Air Force parents who completed a combat deployment. Using the deploying parent as the unit of analysis, we analyzed whether child maltreatment rates increased postdeployement relative to predeployment. These analyses extend previous research that used aggregate data and extend our previous work that used data from the same period but used the victim as the unit of analysis and included only deploying parents who engaged in child maltreatment. In this study, 2% (n = 1,746) of deploying parents perpetrated child maltreatment during the study period. Although no overall differences were found in child maltreatment rates postdeployment compared to predeployment, several maltreatment-related characteristics qualified this finding. Rates for emotional abuse and mild maltreatment were lower following deployment, whereas child maltreatment rates for severe maltreatment were higher following deployment. The finding that rates of severe child maltreatment, including incidents involving alcohol use, were higher postdeployment suggests a need for additional support services for parents following their return from combat deployment, with a focus on returning parents who have an alcohol use problem. © The Author(s) 2014.

Supporting Active Mobility and Green Jobs through the Promotion of Cycling.

PubMed

Scotini, Rodrigo; Skinner, Ian; Racioppi, Francesca; Fusé, Virginia; Bertucci, Jonas de Oliveira; Tsutsumi, Rie

2017-12-19

This article is a summary of the main findings of the study "Riding towards the green economy: cycling and green jobs", which was developed in the context of the Transport, Health and Environment pan-European Programme (THE PEP). It builds on previous work under THE PEP, which demonstrated the job creation potential of cycling and of green and healthy transport more generally. The report summarized in this article collected data on jobs associated with cycling directly from city authorities and analysed these to re-assess previous estimates of the job creation potential of cycling. It concluded that the number of cycling-related jobs in the pan-European Region could increase by 435,000 in selected major cities if they increased their cycling share to that of the Danish capital Copenhagen. The implications and potential role of municipal and sub-national authorities in facilitating cycling while supporting economic development are then discussed. These findings indicate that investment in policies that promote cycling could deliver not only important benefits for health, the environment and the quality of urban life, but could also contribute to a sizable creation of job opportunities. Authorities need to be proactive in promoting cycling in order to deliver these benefits.

Least-Squares Support Vector Machine Approach to Viral Replication Origin Prediction

PubMed Central

Cruz-Cano, Raul; Chew, David S.H.; Kwok-Pui, Choi; Ming-Ying, Leung

2010-01-01

Replication of their DNA genomes is a central step in the reproduction of many viruses. Procedures to find replication origins, which are initiation sites of the DNA replication process, are therefore of great importance for controlling the growth and spread of such viruses. Existing computational methods for viral replication origin prediction have mostly been tested within the family of herpesviruses. This paper proposes a new approach by least-squares support vector machines (LS-SVMs) and tests its performance not only on the herpes family but also on a collection of caudoviruses coming from three viral families under the order of caudovirales. The LS-SVM approach provides sensitivities and positive predictive values superior or comparable to those given by the previous methods. When suitably combined with previous methods, the LS-SVM approach further improves the prediction accuracy for the herpesvirus replication origins. Furthermore, by recursive feature elimination, the LS-SVM has also helped find the most significant features of the data sets. The results suggest that the LS-SVMs will be a highly useful addition to the set of computational tools for viral replication origin prediction and illustrate the value of optimization-based computing techniques in biomedical applications. PMID:20729987

Least-Squares Support Vector Machine Approach to Viral Replication Origin Prediction.

PubMed

Cruz-Cano, Raul; Chew, David S H; Kwok-Pui, Choi; Ming-Ying, Leung

2010-06-01

Replication of their DNA genomes is a central step in the reproduction of many viruses. Procedures to find replication origins, which are initiation sites of the DNA replication process, are therefore of great importance for controlling the growth and spread of such viruses. Existing computational methods for viral replication origin prediction have mostly been tested within the family of herpesviruses. This paper proposes a new approach by least-squares support vector machines (LS-SVMs) and tests its performance not only on the herpes family but also on a collection of caudoviruses coming from three viral families under the order of caudovirales. The LS-SVM approach provides sensitivities and positive predictive values superior or comparable to those given by the previous methods. When suitably combined with previous methods, the LS-SVM approach further improves the prediction accuracy for the herpesvirus replication origins. Furthermore, by recursive feature elimination, the LS-SVM has also helped find the most significant features of the data sets. The results suggest that the LS-SVMs will be a highly useful addition to the set of computational tools for viral replication origin prediction and illustrate the value of optimization-based computing techniques in biomedical applications.

Revealing the role of glutathione S-transferase omega in age-at-onset of Alzheimer and Parkinson diseases.

PubMed

Li, Yi-Ju; Scott, William K; Zhang, Ling; Lin, Ping-I; Oliveira, Sofia A; Skelly, Tara; Doraiswamy, Maurali P; Welsh-Bohmer, Kathleen A; Martin, Eden R; Haines, Jonathan L; Pericak-Vance, Margaret A; Vance, Jeffery M

2006-08-01

We previously reported a linkage region on chromosome 10q for age-at-onset (AAO) of Alzheimer (AD) and Parkinson (PD) diseases. Glutathione S-transferase, omega-1 (GSTO1) and the adjacent gene GSTO2, located in this linkage region, were then reported to associate with AAO of AD and PD. To examine whether GSTO1 and GSTO2 (hereafter referred to as GSTO1h) are responsible for the linkage evidence, we identified 39 families in AD that lead to our previous linkage and association findings. The evidence of linkage and association was markedly diminished after removing these 39 families from the analyses, thus providing support that GSTO1h drives the original linkage results. The maximum average AAO delayed by GSTO1h SNP 7-1 (rs4825, A nucleotide) was 6.8 (+/-4.41) years for AD and 8.6(+/-5.71) for PD, respectively. This is comparable to the magnitude of AAO difference by APOE-4 in these same AD and PD families. These findings suggest the presence of genetic heterogeneity for GSTO1h's effect on AAO, and support GSTO1h's role in modifying AAO in these two disorders.

Family and Friendship Networks and Obsessive-Compulsive Disorder Among African Americans and Black Caribbeans.

PubMed

Himle, Joseph A; Taylor, Robert Joseph; Nguyen, Ann W; Williams, Monnica T; Lincoln, Karen D; Taylor, Harry Owen; Chatters, Linda M

2017-03-01

Although there is a large literature on the influence of social support on mental health there is limited research on social support and OCD. This is especially the case for African Americans and Black Caribbeans. This study examines the relationship between family and friendship networks and the prevalence of OCD. The analysis is based on the National Survey of American Life a nationally representative sample of African Americans and Black Caribbeans. Variables included frequency of contact with family and friends, subjective closeness with family and friends, and negative interactions (conflict, criticisms) with family members. The results indicated that only negative interaction with family members was significantly associated with OCD prevalence. African Americans and Black Caribbeans with more frequent negative interactions with family members had a higher likelihood of having OCD. Subjective closeness and frequency of contact with family and friends was not protective of OCD. Overall the findings are consistent with previous work which finds that social support is an inconsistent protective factor of psychiatric disorders, but negative interactions with support network members is more consistently associated with mental health problems.

Family and Friendship Networks and Obsessive-Compulsive Disorder Among African Americans and Black Caribbeans

PubMed Central

Himle, Joseph A.; Taylor, Robert Joseph; Nguyen, Ann W.; Williams, Monnica T.; Lincoln, Karen D.; Taylor, Harry Owen; Chatters, Linda M.

2017-01-01

Although there is a large literature on the influence of social support on mental health there is limited research on social support and OCD. This is especially the case for African Americans and Black Caribbeans. This study examines the relationship between family and friendship networks and the prevalence of OCD. The analysis is based on the National Survey of American Life a nationally representative sample of African Americans and Black Caribbeans. Variables included frequency of contact with family and friends, subjective closeness with family and friends, and negative interactions (conflict, criticisms) with family members. The results indicated that only negative interaction with family members was significantly associated with OCD prevalence. African Americans and Black Caribbeans with more frequent negative interactions with family members had a higher likelihood of having OCD. Subjective closeness and frequency of contact with family and friends was not protective of OCD. Overall the findings are consistent with previous work which finds that social support is an inconsistent protective factor of psychiatric disorders, but negative interactions with support network members is more consistently associated with mental health problems. PMID:28321149

Emotional support predicts more sickness absence and poorer self assessed work ability: a two-year prospective cohort study.

PubMed

Karlsson, Nadine; Skargren, Elisabeth; Kristenson, Margareta

2010-10-26

While back pain and stressful work environment are shown to be important causes of sickness absence the effect of psychosocial resources on sickness absence, and on self assessed work ability, is less commonly investigated. The aim of this study was to assess these associations in a two-year follow-up study. 341 working people aged 45 to 64, randomly drawn from the population, responded to a questionnaire at baseline and at a two-year follow-up. Poisson regression was used to analyse the association of psychosocial factors (psychosocial instruments on work environment, emotional support and psychological resources) and previous back pain (low back and/or neck) at baseline with sickness absence (spells and days) at follow-up, controlling for effects of age, sex, BMI, smoking, alcohol, occupation, disease and previous sickness absence. Logistic regression was used to study the associations of psychosocial factors and previous back pain at baseline with self assessed prognosis of poor work ability six months from follow-up. Finally, a multivariate analysis tested the independent effects of previous back pain and 3 psychosocial factors derived in a factor analysis: 1. work environment; 2. emotional support; 3. psychological resources, on work ability and absence days and spells. 80% of the sickness absence spells within the last 12 months before follow-up were short-term (≤ 14 days). In the final model, high emotional support predicted more sickness absence spells (RR 1.36; 1.11-1.67) and days (RR 1.68, 1.22-2.31). Previous back pain (OR 2.56; 1.13-5.81), high emotional support (OR 1.58; 1.02-2.46), and low psychological resources (OR 0.62; 0.44-0.89) were related to poorer self assessed prognosis of work ability at follow up. In a general middle aged working population high emotional support was related to more sickness absence and also poorer self assessed prognosis of work ability. Our findings suggest that both sickness absence and self assessed work ability are dependent of life outside work and can be affected by a person's close community.

Differential impacts of social support on mental health: A comparison study of Chinese rural-to-urban migrant adolescents and their urban counterparts in Beijing, China.

PubMed

Zhuang, Xiao Yu; Wong, Daniel Fu Keung

2017-02-01

The number of internal migrant children in China has reached 35.8 million by the end of 2010. Previous studies revealed inconsistent findings regarding the mental health status of rural-to-urban migrant adolescents, as well as the impact of peer, teacher and parental support on the mental health of Chinese adolescent migrants. Using a comparative approach, this study attempted to compare the mental health status between migrant and urban-born adolescents and to clarify the specific roles of different sources of social support in the mental health of migrant and urban adolescents. A cross-sectional survey using a cluster convenience sampling strategy was performed in Beijing, China. A structured questionnaire was filled out by 368 rural-to-urban migrant adolescents and 325 urban-born adolescents. A significant difference was found only for positive affect (PA) but not for negative affect (NA) between the two groups, favouring the urban-born adolescents. Social support from all the three sources were all predictive of PA among rural-to-urban migrant adolescents, while only peer support contributed to PA among urban-born adolescents. Unexpectedly, teachers' support contributed to an increase in NA among urban-born adolescents. The findings contribute to understanding of the mental health status of migrant adolescents in China and the differential impact of the various sources of social support on migrant and urban-born adolescents. Also the findings may inform the development of mental health services and programmes that can potentially benefit a large number of internal migrant adolescents in China.

Reproducibility of Cognitive Profiles in Psychosis Using Cluster Analysis.

PubMed

Lewandowski, Kathryn E; Baker, Justin T; McCarthy, Julie M; Norris, Lesley A; Öngür, Dost

2018-04-01

Cognitive dysfunction is a core symptom dimension that cuts across the psychoses. Recent findings support classification of patients along the cognitive dimension using cluster analysis; however, data-derived groupings may be highly determined by sampling characteristics and the measures used to derive the clusters, and so their interpretability must be established. We examined cognitive clusters in a cross-diagnostic sample of patients with psychosis and associations with clinical and functional outcomes. We then compared our findings to a previous report of cognitive clusters in a separate sample using a different cognitive battery. Participants with affective or non-affective psychosis (n=120) and healthy controls (n=31) were administered the MATRICS Consensus Cognitive Battery, and clinical and community functioning assessments. Cluster analyses were performed on cognitive variables, and clusters were compared on demographic, cognitive, and clinical measures. Results were compared to findings from our previous report. A four-cluster solution provided a good fit to the data; profiles included a neuropsychologically normal cluster, a globally impaired cluster, and two clusters of mixed profiles. Cognitive burden was associated with symptom severity and poorer community functioning. The patterns of cognitive performance by cluster were highly consistent with our previous findings. We found evidence of four cognitive subgroups of patients with psychosis, with cognitive profiles that map closely to those produced in our previous work. Clusters were associated with clinical and community variables and a measure of premorbid functioning, suggesting that they reflect meaningful groupings: replicable, and related to clinical presentation and functional outcomes. (JINS, 2018, 24, 382-390).

Feature binding and attention in working memory: a resolution of previous contradictory findings.

PubMed

Allen, Richard J; Hitch, Graham J; Mate, Judit; Baddeley, Alan D

2012-01-01

We aimed to resolve an apparent contradiction between previous experiments from different laboratories, using dual-task methodology to compare effects of a concurrent executive load on immediate recognition memory for colours or shapes of items or their colour-shape combinations. Results of two experiments confirmed previous evidence that an irrelevant attentional load interferes equally with memory for features and memory for feature bindings. Detailed analyses suggested that previous contradictory evidence arose from limitations in the way recognition memory was measured. The present findings are inconsistent with an earlier suggestion that feature binding takes place within a multimodal episodic buffer Baddeley, ( 2000 ) and support a subsequent account in which binding takes place automatically prior to information entering the episodic buffer Baddeley, Allen, & Hitch, ( 2011 ). Methodologically, the results suggest that different measures of recognition memory performance (A', d', corrected recognition) give a converging picture of main effects, but are less consistent in detecting interactions. We suggest that this limitation on the reliability of measuring recognition should be taken into account in future research so as to avoid problems of replication that turn out to be more apparent than real.

Deviations in gait metrics in patients with chronic ankle instability: a case control study.

PubMed

Gigi, Roy; Haim, Amir; Luger, Elchanan; Segal, Ganit; Melamed, Eyal; Beer, Yiftah; Nof, Matityahu; Nyska, Meir; Elbaz, Avi

2015-01-01

Gait metric alterations have been previously reported in patients suffering from chronic ankle instability (CAI). Previous studies of gait in this population have been comprised of relatively small cohorts, and the findings of these studies are not uniform. The objective of the present study was to examine spatiotemporal gait metrics in patients with CAI and examine the relationship between self-reported disease severity and the magnitude of gait abnormalities. Forty-four patients with CAI were identified and compared to 53 healthy controls. Patients were evaluated with spatiotemporal gait analysis via a computerized mat and with the Short Form (SF) - 36 health survey. Patients with CAI were found to walk with approximately 16% slower walking velocity, 9% lower cadence and approximately 7% lower step length. Furthermore, the base of support, during walking, in the CAI group was approximately 43% wider, and the single limb support phase was 3.5% shorter compared to the control group. All of the SF-36 8-subscales, as well as the SF-36 physical component summary and SF-36 mental component summary, were significantly lower in patients with CAI compared to the control group. Finally, significant correlations were found between most of the objective gait measures and the SF-36 mental component summary and SF-36 physical component summary. The results outline a gait profile for patients suffering from CAI. Significant differences were found in most spatiotemporal gait metrics. An important finding was a significantly wider base of support. It may be speculated that these gait alterations may reflect a strategy to deal with imbalance and pain. These findings suggest the usefulness of gait metrics, alongside with the use of self-evaluation questionnaires, in assessing disease severity of patients with CAI.

Effects of labor force participation on women's health: new evidence from a longitudinal study.

PubMed

Waldron, I; Jacobs, J A

1988-12-01

Effects of labor force participation on women's health are evaluated in analyses of longitudinal data for a national sample of older middle-aged women. Our findings indicate that labor force participation had beneficial effects on health for unmarried women and for married black women, but, on the average, labor force participation had no significant effect on health for married white women. Analyses by occupational category suggest that labor force participation had beneficial effects on health for some blue collar married women, but, on the average, labor force participation had harmful effects on health for white collar married women. Our findings, taken together with previous evidence, suggest that employment may increase social support, and job-related social support may have particularly beneficial effects on health for unmarried women and for married women whose husbands are not emotionally supportive confidants. Additional results from this study showed no significant difference in the health effects of part-time and full-time employment.

Trainee experiences of intellectual disability psychiatry and an innovative leaderless support group: a qualitative study

PubMed Central

Spackman, Ross; Toogood, Hannah; Kerridge, Jayne; Nash, Jon; Anderson, Elizabeth; Rai, Dheeraj

2017-01-01

Aims and method There is very little research into the challenges of training in intellectual disability psychiatry or into interventions which may address these challenges. Using focus groups, we explored the experiences of intellectual disability psychiatry trainees, and evaluated a leaderless trainee support group developed in Bristol. Results Five distinct themes were identified via framework analysis: that trainees felt unprepared for the difference from previous posts; the need for support; the value of the group; that trainees were concerned about judgement in supervision; that the group structure was valued. Clinical implications Our findings highlight the support needs specific to intellectual disability psychiatry trainees. Leaderless peer support groups may be a valued resource to address such issues, and may be a useful model to be considered by other training schemes. PMID:28811919

Social support, psychological vulnerability, and HIV risk among African American men who have sex with men

PubMed Central

Saleh, Lena D.; Chambers, Christopher S.; Operario, Don

2015-01-01

Previous research has suggested a need to understand the social-psychological factors contributing to HIV risk among African American men who have sex with men (MSM). We conducted individual in-depth interviews with 34 adult African American MSM to examine their personal experiences about: (i) sources of social support, (ii) psychological responses to the presence or absence of social support, and (iii) influences of social support on sexual behaviors. The majority of participants described limited positive encouragement and lack of emotional support from family, as well as few meaningful personal relationships. Feelings of isolation and mistrust about personal relationships led many participants to avoid emotional intimacy and seek physical intimacy through sexual encounters. Findings highlight a need for multi-level interventions that enhance social support networks and address the social-psychological, emotional, and interpersonal factors that contribute to HIV risk among African American MSM. PMID:26588945

Speculation on commodities futures markets and destabilization of global food prices: exploring the connections.

PubMed

Ghosh, Jayati; Heintz, James; Pollin, Robert

2012-01-01

In December 2010, the United Nations Food and Agriculture Organization's Food Price Index surpassed its previous peak of June 2008, and prices remained at this level through September 2011. This pattern is creating justified fears of a renewal or intensification of the global food crisis. This paper reviews arguments and evidence to inform debates on how to regulate commodity futures markets in the face of such price volatility and sustained high prices. We focus on the relationship between market liquidity and price patterns in asset markets in general and in commodities futures markets in particular, as well as the relationship between spot and futures market prices for food. We find strong evidence supporting the need to limit huge increases in trading volume on futures markets through regulations. We find that arguments opposing regulation are not supported. We find no support for the claim that liquidity in futures markets stabilizes prices at "fundamental" values or that spot market prices are free of any significant influence from futures markets. Given these results, the most appropriate position for regulators is precautionary: they should enact and enforce policies capable of effectively dampening excessive speculative trading on the commodities markets for food.

Implementing complex innovations: factors influencing middle manager support.

PubMed

Chuang, Emmeline; Jason, Kendra; Morgan, Jennifer Craft

2011-01-01

Middle manager resistance is often described as a major challenge for upper-level administrators seeking to implement complex innovations such as evidence-based protocols or new skills training. However, factors influencing middle manager support for innovation implementation are currently understudied in the U.S. health care literature. This article examined the factors that influence middle managers' support for and participation in the implementation of work-based learning, a complex innovation adopted by health care organizations to improve the jobs, educational pathways, skills, and/or credentials of their frontline workers. We conducted semistructured interviews and focus groups with 92 middle managers in 17 health care organizations. Questions focused on understanding middle managers' support for work-based learning as a complex innovation, facilitators and barriers to the implementation process, and the systems changes needed to support the implementation of this innovation. Factors that emerged as influential to middle manager support were similar to those found in broader models of innovation implementation within the health care literature. However, our findings extend previous research by developing an understanding about how middle managers perceived these constructs and by identifying specific strategies for how to influence middle manager support for the innovation implementation process. These findings were generally consistent across different types of health care organizations. Study findings suggest that middle manager support was highest when managers felt the innovation fit their workplace needs and priorities and when they had more discretion and control over how it was implemented. Leaders seeking to implement innovations should consider the interplay between middle managers' control and discretion, their narrow focus on the performance of their own departments or units, and the dedication of staff and other resources for empowering their managers to implement these complex innovations.

Heart rate variability and cortisol responses during attentional and working memory tasks in naval cadets.

PubMed

Johnsen, Bjørn Helge; Hansen, Anita L; Murison, Robert; Eid, Jarle; Thayer, Julian F

2012-01-01

The aim of the paper was to study the relationship between heart rate variability (HRV) and cortisol release during cognitive challenging tasks. Forty-nine male naval cadets from the Royal Norwegian Naval Academy were administered computerised versions of attentional and working memory tests. The results from this study support the hypothesis of a negative correlation between HRV and cortisol secretion during cognitive tasks. Confirmation of the hypothesis with the low HRV group scoring higher on cortisol only during performance of cognitive tasks and recovery was also found. Furthermore, a replication of the previous findings of a negative association between cortisol levels and performance were supported when using uncorrected comparisons. None of the correlations survived Bonferonin corrections. The findings are discussed in relation to factors increasing HRV, thus improving tolerance to cognitive stress in onboard environments.

Flourishing: exploring predictors of mental health within the college environment.

PubMed

Fink, John E

2014-01-01

To explore the predictive factors of student mental health within the college environment. Students enrolled at 7 unique universities during years 2008 (n=1,161) and 2009 (n=1,459). Participants completed survey measures of mental health, consequences of alcohol use, and engagement in the college environment. In addition to replicating previous findings related to Keyes' Mental Health Continuum, multiple regression analysis revealed several predictors of college student mental health, including supportive college environments, students' sense of belonging, professional confidence, and civic engagement. However, multiple measures of engaged learning were not found to predict mental health. Results suggest that supportive college environments foster student flourishing. Implications for promoting mental health across campus are discussed. Future research should build on exploratory findings and test confirmatory models to better understand relationships between the college environment and student flourishing.

Women living with AIDS in rural Southern India: Perspectives on mental health and lay health care worker support

PubMed Central

Srivastava, Neha; Nyamathi, Adeline M.; Sinha, Sanjeev; Carpenter, Catherine; Satyanarayana, Veena; Ramakrishna, Padma; Ekstrand, Maria

2017-01-01

In this study, focus groups were conducted with 16 rural Women Living with AIDS (WLA) from Andhra Pradesh, India who had previously participated in a clinical trial wherein 68 WLA were randomized into either an Accredited Social Health Activists (ASHA) – Life (AL) intervention or a Usual Care program. Findings are discussed in terms of: a) mental health issues, b) perceived stressors, c) individual resources for coping with mental health issues, and d) role of Asha support in coping with mental health issues. These findings highlight the salience of mental health issues in the lives of WLA and the role played by Asha in addressing some of these issues. The discussion section makes a case for increased emphasis on mental health care in future community-based interventions for this population. PMID:29056879

Couples' grief and experience of support in the aftermath of miscarriage.

PubMed

Conway, K; Russell, G

2000-12-01

The aim of this prospective study involving 39 women and 32 partners was to investigate the grief response of both the woman and her partner to miscarriage and to ascertain if support received was adequate and appropriate to their needs. Previous research shows that partners' grief can often be delayed and chronic. Special emphasis is placed on this area in this study. The miscarriage was found to be a significant event and the majority of women and partners still experienced feelings of loss up to 4 months afterwards, describing their reactions as sad or very sad. Scores on the first administration of the Perinatal Grief Scale showed that, in contrast with previous findings, partners scored significantly higher than the women on the three subscales and overall. Partners' scores on the second administration were also higher than those for the women but the difference was not significant. The women tended to receive and welcome social support more than the partners. Support received from health professionals was not always optimal, particularly for partners. Pregnancy subsequent to miscarriage was often viewed with some anxiety. It is argued that the results of the study have important implications for health practice.

Mood-stabilizing effects of rapamycin and its analog temsirolimus: relevance to autophagy.

PubMed

Kara, Nirit Z; Flaisher-Grinberg, Shlomit; Anderson, Grant W; Agam, Galila; Einat, Haim

2018-06-01

Accumulated data support a relationship between mood disorders and cellular plasticity and resilience, some suggesting relevance to autophagy. Our previous data show that pharmacological enhancement of autophagy results in antidepressant-like effects in mice. The current study was designed to further examine the effects of autophagy enhancement on mood by testing the effects of subchronic treatment with the mammalian target of rapamycin (mTOR) inhibitors and autophagy enhancers rapamycin and temsirolimus in a model for mania and in a model for antidepressant action, respectively. The results show that rapamycin reduced mania-like aggression and reward-seeking behaviors, with no effects on locomotion. Temsirolimus reduced depression-related immobility in the forced-swim test without effects on locomotion in the open field or on anxiety-related measures in the elevated plus maze. Taken together with our previous findings, these data support the notion that enhancing autophagy may have mood-stabilizing effects.

An Evaluation of Talent 4 . . . : A Programme to Identify Talent and Skills for Prisoners, Disadvantaged, Unemployed, and Vulnerable Groups.

PubMed

McGuire-Snieckus, Rebecca; Caulfield, Laura

2017-11-01

Previous research suggests that the relationship between employment and recidivism is complex, with more support needed to facilitate employability motivation for sustained change. An arts-based programme designed to facilitate vocational self-determinism among prisoners with evidence of impact across three prisons in the United Kingdom was replicated and delivered to 234 prisoners and long-term unemployed participants from six European countries, to explore whether the findings from the previous evaluation would be replicated on a much larger scale. The research presented in this article found that supporting prisoners and the long-term unemployed to articulate employability goals had a positive effect on personal growth as well as understanding of individual strengths and weaknesses with respect to work, employment, problem solving, and thinking styles. Future research might explore the longer term impact on employment and recidivism.

Much ado about religion: Religiosity, resource loss, and support for political violence

PubMed Central

Canetti, Daphna; Hobfoll, Stevan E; Pedahzur, Ami; Zaidise, Eran

2011-01-01

The association between religion and violence has raised much interest in both academic and public circles. Yet on the individual level, existing empirical accounts are both sparse and conflicting. Based on previous research which found that religion plays a role in the support of political violence only through the mediation of objective and perceived deprivations, the authors test Conservation of Resource (COR) theory as an individual level explanation for the association of religion, socio-economic deprivations, and support for political violence. COR theory predicts that when individuals’ personal, social or economic resources are threatened, a response mechanism may include violence. Utilizing two distinct datasets, and relying on structural equation models analysis, the latter two stages of a three-stage study are reported here. In a follow-up to their previous article, the authors refine the use of socio-economic variables in examining the effects of deprivation as mediating between religion and political violence. Then, they analyze an independent sample of 545 Muslims and Jews, collected during August and September 2004, to test a psychological-based explanation based on COR theory. This study replaces measures of deprivation used in the previous stages with measures of economic and psychological resource loss. Findings show that the relationship between religion and support of political violence only holds true when mediated by deprivations and psychological resource loss. They also suggest that the typical tendency to focus on economic resource loss is over-simplistic as psychological, not economic, resources seem to mediate between religion and support of violence. PMID:22162618

The orbital period of the dwarf nova AF Camelopardalis

NASA Astrophysics Data System (ADS)

Szkody, Paula; Howell, Steve B.

1989-04-01

Time-resolved optical spectroscopy of the dwarf nova AF Cam for 4.5 hr during a decline from outburst reveals that the orbital period is relatively long (5-6 hr). CCD photometry at quiescence also supports this finding. This rules out the previously observed 67-76 min modulations (evident in IR photometric measurements at quiescence and optical photometry at outburst) as orbital in nature.

Giving to Excellence: Generating Philanthropic Support for UK Higher Education. Ross-CASE Report 2016

ERIC Educational Resources Information Center

Jain, Yashraj

2016-01-01

This report presents findings from the 2016 Ross-CASE Survey of Philanthropic Giving to Universities in UK. The project was conducted by CASE Europe and funded by HEFCE and the Ross-Group. This year's survey comes at a time of great change for the UK charity sector. The historical trend data of previous surveys will be invaluable in helping…

Ecology-centered experiences among children and adolescents: A qualitative and quantitative analysis

NASA Astrophysics Data System (ADS)

Orton, Judy

The present research involved two studies that considered ecology-centered experiences (i.e., experiences with living things) as a factor in children's environmental attitudes and behaviors and adolescents' ecological understanding. The first study (Study 1) examined how a community garden provides children in an urban setting the opportunity to learn about ecology through ecology-centered experiences. To do this, I carried out a yearlong ethnographic study at an urban community garden located in a large city in the Southeastern United States. Through participant observations and informal interviews of community garden staff and participants, I found children had opportunities to learn about ecology through ecology-centered experiences (e.g., interaction with animals) along with other experiences (e.g., playing games, reading books). In light of previous research that shows urban children have diminished ecological thought---a pattern of thought that privileges the relationship between living things---because of their lack of ecology-centered experiences (Coley, 2012), the present study may have implications for urban children to learn about ecology. As an extension of Study 1, I carried out a second study (Study 2) to investigate how ecology-centered experiences contribute to adolescents' environmental attitudes and behaviors in light of other contextual factors, namely environmental responsibility support, ecological thought, age and gender. Study 2 addressed three research questions. First, does ecological thought---a pattern of thought that privileges the relationship between living things---predict environmental attitudes and behaviors (EAB)? Results showed ecological thought did not predict EAB, an important finding considering the latent assumptions of previous research about the relationship between these two factors (e.g., Brugger, Kaiser, & Roczen, 2011). Second, do two types of contextual support, ecology-centered experiences (i.e., experiences with living things) and environmental responsibility support (i.e., support through the availability of environmentally responsible models) predict EAB? As predicted, results showed that ecology-centered experiences predicted EAB; yet, when environmental responsibility support was taken into consideration, ecology-centered experiences no longer predicted EAB. These findings suggested environmental responsibility support was a stronger predictor than ecology-centered experiences. Finally, do age and gender predict EAB? Consistent with previous research (e.g., Alp, Ertepiner, Tekkaya, & Yilmaz, 2006), age and gender significantly predicted EAB.

Models for small-scale structure on cosmic strings. II. Scaling and its stability

NASA Astrophysics Data System (ADS)

Vieira, J. P. P.; Martins, C. J. A. P.; Shellard, E. P. S.

2016-11-01

We make use of the formalism described in a previous paper [Martins et al., Phys. Rev. D 90, 043518 (2014)] to address general features of wiggly cosmic string evolution. In particular, we highlight the important role played by poorly understood energy loss mechanisms and propose a simple Ansatz which tackles this problem in the context of an extended velocity-dependent one-scale model. We find a general procedure to determine all the scaling solutions admitted by a specific string model and study their stability, enabling a detailed comparison with future numerical simulations. A simpler comparison with previous Goto-Nambu simulations supports earlier evidence that scaling is easier to achieve in the matter era than in the radiation era. In addition, we also find that the requirement that a scaling regime be stable seems to notably constrain the allowed range of energy loss parameters.

The public's trust in scientific claims regarding offshore oil drilling.

PubMed

Carlisle, Juliet E; Feezell, Jessica T; Michaud, Kristy E H; Smith, Eric R A N; Smith, Leeanna

2010-09-01

Our study examines how individuals decide which scientific claims and experts to believe when faced with competing claims regarding a policy issue. Using an experiment in a public opinion survey, we test the source content and credibility hypotheses to assess how much confidence people have in reports about scientific studies of the safety of offshore oil drilling along the California coast. The results show that message content has a substantial impact. People tend to accept reports of scientific studies that support their values and prior beliefs, but not studies that contradict them. Previous studies have shown that core values influence message acceptance. We find that core values and prior beliefs have independent effects on message acceptance. We also find that the sources of the claims make little difference. Finally, the public leans toward believing reports that oil drilling is riskier than previously believed.

How job demands affect partners' experience of exhaustion: integrating work-family conflict and crossover theory.

PubMed

Bakker, Arnold B; Demerouti, Evangelia; Dollard, Maureen F

2008-07-01

This study among 168 couples of dual-earner parents uses insights from previous work-family conflict and crossover research to propose an integrative model delineating how job demands experienced by men and women carry over to the home domain. The authors hypothesized that for both men and women, job demands foster their own work-family conflict (WFC), which in turn contributes to their partners' home demands, family-work conflict (FWC), and exhaustion. In addition, they hypothesized that social undermining mediates the relationship between individuals' WFC and their partners' home demands. The results of structural equation modeling analyses provided strong support for the proposed model. The hypothesis that gender would moderate the model relationships was rejected. These findings integrate previous findings on work-family conflict and crossover theories and suggest fluid boundaries between the work and home domains.

Evidence for hubs in human functional brain networks

PubMed Central

Power, Jonathan D; Schlaggar, Bradley L; Lessov-Schlaggar, Christina N; Petersen, Steven E

2013-01-01

Summary Hubs integrate and distribute information in powerful ways due to the number and positioning of their contacts in a network. Several resting state functional connectivity MRI reports have implicated regions of the default mode system as brain hubs; we demonstrate that previous degree-based approaches to hub identification may have identified portions of large brain systems rather than critical nodes of brain networks. We utilize two methods to identify hub-like brain regions: 1) finding network nodes that participate in multiple sub-networks of the brain, and 2) finding spatial locations where several systems are represented within a small volume. These methods converge on a distributed set of regions that differ from previous reports on hubs. This work identifies regions that support multiple systems, leading to spatially constrained predictions about brain function that may be tested in terms of lesions, evoked responses, and dynamic patterns of activity. PMID:23972601

Selective attention determines emotional responses to novel visual stimuli.

PubMed

Raymond, Jane E; Fenske, Mark J; Tavassoli, Nader T

2003-11-01

Distinct complex brain systems support selective attention and emotion, but connections between them suggest that human behavior should reflect reciprocal interactions of these systems. Although there is ample evidence that emotional stimuli modulate attentional processes, it is not known whether attention influences emotional behavior. Here we show that evaluation of the emotional tone (cheery/dreary) of complex but meaningless visual patterns can be modulated by the prior attentional state (attending vs. ignoring) used to process each pattern in a visual selection task. Previously ignored patterns were evaluated more negatively than either previously attended or novel patterns. Furthermore, this emotional devaluation of distracting stimuli was robust across different emotional contexts and response scales. Finding that negative affective responses are specifically generated for ignored stimuli points to a new functional role for attention and elaborates the link between attention and emotion. This finding also casts doubt on the conventional marketing wisdom that any exposure is good exposure.

The aggregate complexity of decisions in the game of Go

NASA Astrophysics Data System (ADS)

Harré, M. S.; Bossomaier, T.; Gillett, A.; Snyder, A.

2011-04-01

Artificial intelligence (AI) research is fast approaching, or perhaps has already reached, a bottleneck whereby further advancement towards practical human-like reasoning in complex tasks needs further quantified input from large studies of human decision-making. Previous studies in psychology, for example, often rely on relatively small cohorts and very specific tasks. These studies have strongly influenced some of the core notions in AI research such as the reinforcement learning and the exploration versus exploitation paradigms. With the goal of contributing to this direction in AI developments we present our findings on the evolution towards world-class decision-making across large cohorts of subjects in the formidable game of Go. Some of these findings directly support previous work on how experts develop their skills but we also report on several previously unknown aspects of the development of expertise that suggests new avenues for AI research to explore. In particular, at the level of play that has so far eluded current AI systems for Go, we are able to quantify the lack of `predictability' of experts and how this changes with their level of skill.

Sources of science self-efficacy beliefs of middle school students

NASA Astrophysics Data System (ADS)

Britner, Shari L.; Pajares, Frank

2006-05-01

The purpose of this study was to investigate the degree to which A. Bandura's ([1997]) hypothesized sources of self-efficacy predict the science self-efficacy beliefs of middle school students (N = 319), to replicate previous findings that science self-efficacy predicts science achievement, and to explore how science self-efficacy and its antecedents differ by gender. Significant correlations were found between mastery experiences, vicarious experiences, social persuasions, physiological arousal, and self-efficacy. Only mastery experiences significantly predicted science self-efficacy. Girls reported stronger science self-efficacy than did boys. Findings support and extend the theoretical tenets of Bandura's social cognitive theory.

Challenges to Breastfeeding Initiation and Duration for Teen Mothers.

PubMed

Cota-Robles, Sonia; Pedersen, Laura; LeCroy, Craig Winston

The purpose of this study was to evaluate breastfeeding practices of teen mothers in a pre- and postnatal education and support program. We studied breastfeeding practices of primarily Hispanic and non-Hispanic White teen mothers who participated in the Teen Outreach Pregnancy Services (TOPS) program, which promoted breastfeeding through prenatal programming and postpartum support. Analyses identified the most common reasons participants had not breastfed and, for those who initiated breastfeeding, the most common reasons they stopped. Participants (g = 314) reported on whether and for how long they breastfed. Nearly all participants reported initiating breastfeeding but few breastfed to 6 months. For the most part, reasons they reported stopping breastfeeding paralleled those previously reported for adult mothers across the first several months of motherhood. We found that teen mothers can initiate breastfeeding at high rates. Results highlight areas in which teen mothers' knowledge and skills can be supported to promote breastfeeding duration, including pain management and better recognizing infant cues. Our findings expand limited previous research investigating reasons that teen mothers who initiate breastfeeding stop before 6 months.

Towards Direct Simulation of Future Tropical Cyclone Statistics in a High-Resolution Global Atmospheric Model

DOE PAGES

Wehner, Michael F.; Bala, G.; Duffy, Phillip; ...

2010-01-01

We present a set of high-resolution global atmospheric general circulation model (AGCM) simulations focusing on the model's ability to represent tropical storms and their statistics. We find that the model produces storms of hurricane strength with realistic dynamical features. We also find that tropical storm statistics are reasonable, both globally and in the north Atlantic, when compared to recent observations. The sensitivity of simulated tropical storm statistics to increases in sea surface temperature (SST) is also investigated, revealing that a credible late 21st century SST increase produced increases in simulated tropical storm numbers and intensities in all ocean basins. Whilemore » this paper supports previous high-resolution model and theoretical findings that the frequency of very intense storms will increase in a warmer climate, it differs notably from previous medium and high-resolution model studies that show a global reduction in total tropical storm frequency. However, we are quick to point out that this particular model finding remains speculative due to a lack of radiative forcing changes in our time-slice experiments as well as a focus on the Northern hemisphere tropical storm seasons.« less

Valued aspects of primary palliative care: content analysis of bereaved carers' descriptions.

PubMed

Grande, Gunn E; Farquhar, Morag C; Barclay, Stephen Ig; Todd, Chris J

2004-10-01

Informal carers provide the bulk of palliative home care. They largely rely on general practitioners (GPs) and district nurses to support them in this role, yet little is known about what carers themselves consider important in this support. To identify what informal carers valued in the palliative support provided by GPs and district nurses by using carers' own descriptions of such support. Retrospective interviews. Primary care in Cambridgeshire. Semi-structured interviews with bereaved carers of 48 patients with cancer and 12 patients with non-cancer diagnoses. Content analysis of carers' evaluative descriptions of GP and district nurse support. The accessibility of the GP and district nurse emerged as the most important aspect of support. Enlistment of help from other agencies was also extensively mentioned, together with provision of equipment. Attitude or approach during interactions, and relationship with the professional were important, particularly regarding GP support, whereas support for the carer, information, and symptom control were mentioned less often. Data suggested that support was not as good for older patients (> or =75 years), but this finding requires further investigation. Results largely confirmed findings of previous, quantitative research and the importance of a patient-centred approach. What emerged most strongly, however, was the central importance of accessibility of support services for lay carers responsible for end-of-life home care. This mainly concerned GP and district nurse support, but accessibility of additional care and equipment were also important. In short, carers' main focus was the basic support that enabled them to sustain care in the home.

Communication and Exchange of Specialized Health-Related Support Among People With Experiential Similarity on Facebook.

PubMed

Gage-Bouchard, Elizabeth A; LaValley, Susan; Mollica, Michelle; Beaupin, Lynda Kwon

2017-10-01

Social support is an important factor that shapes how people cope with illness, and health-related communication among peers managing the same illness (network ties with experiential similarity) offers specialized information, resources, and emotional support. Facebook has become a ubiquitous part of many Americans' lives, and may offer a way for patients and caregivers experiencing a similar illness to exchange specialized health-related support. However, little is known about the content of communication among people who have coped with the same illness on personal Facebook pages. We conducted a content analysis of 12 months of data from 18 publicly available Facebook pages hosted by parents of children with acute lymphoblastic leukemia, focusing on communication between users who self-identified as parents of pediatric cancer patients. Support exchanges between users with experiential similarity contained highly specialized health-related information, including information about health services use, symptom recognition, compliance, medication use, treatment protocols, and medical procedures. Parents also exchanged tailored emotional support through comparison, empathy, encouragement, and hope. Building upon previous research documenting that social media use can widen and diversify support networks, our findings show that cancer caregivers access specialized health-related informational and emotional support through communication with others who have experienced the same illness on personal Facebook pages. These findings have implications for health communication practice and offer evidence to tailor M-Health interventions that leverage existing social media platforms to enhance peer support for patients and caregivers.

On the Value-Dependence of Value-Driven Attentional Capture

PubMed Central

Anderson, Brian A.; Halpern, Madeline

2017-01-01

Findings from an increasingly large number of studies have been used to argue that attentional capture can be dependent on the learned value of a stimulus, or value-driven. However, under certain circumstances attention can be biased to select stimuli that previously served as targets, independent of reward history. Value-driven attentional capture, as studied using the training phase-test phase design introduced by Anderson and colleagues, is widely presumed to reflect the combined influence of learned value and selection history. However, the degree to which attentional capture is at all dependent on value learning in this paradigm has recently been questioned. Support for value-dependence can be provided through one of two means: (1) greater attentional capture by prior targets following rewarded training than following unrewarded training, and (2) greater attentional capture by prior targets previously associated with high compared to low value. Using a variant of the original value-driven attentional capture paradigm, Sha and Jiang (2016) failed to find evidence of either, and raised criticisms regarding the adequacy of evidence provided by prior studies using this particular paradigm. To address this disparity, here we provided a stringent test of the value-dependence hypothesis using the traditional value-driven attentional capture paradigm. With a sufficiently large sample size, value-dependence was observed based on both criteria, with no evidence of attentional capture without rewards during training. Our findings support the validity of the traditional value-driven attentional capture paradigm in measuring what its name purports to measure. PMID:28176215

Developing measures of food and nutrition security within an Australian context.

PubMed

Archer, Claire; Gallegos, Danielle; McKechnie, Rebecca

2017-10-01

To develop a measure of food and nutrition security for use among an Australian population that measures all pillars of food security and to establish its content validity. The study consisted of two phases. Phase 1 involved focus groups with experts working in the area of food security. Data were assessed using content analysis and results informed the development of a draft tool. Phase 2 consisted of a series of three online surveys using the Delphi technique. Findings from each survey were used to establish content validity and progressively modify the tool until consensus was reached for all items. Australia. Phase 1 focus groups involved twenty-five experts working in the field of food security, who were attending the Dietitians Association of Australia National Conference, 2013. Phase 2 included twenty-five experts working in food security, who were recruited via email. Findings from Phase 1 supported the need for an Australian-specific tool and highlighted the failure of current tools to measure across all pillars of food security. Participants encouraged the inclusion of items to measure barriers to food acquisition and the previous single item to enable comparisons with previous data. Phase 2 findings informed the selection and modification of items for inclusion in the final tool. The results led to the development of a draft tool to measure food and nutrition security, and supported its content validity. Further research is needed to validate the tool among the Australian population and to establish inter- and intra-rater reliability.

Promoting Adolescent Girls' Well-Being in Pakistan: a Mixed-Methods Study of Change Over Time, Feasibility, and Acceptability, of the COMPASS Program.

PubMed

Asghar, Khudejha; Mayevskaya, Yana; Sommer, Marni; Razzaque, Ayesha; Laird, Betsy; Khan, Yasmin; Qureshi, Shamsa; Falb, Kathryn; Stark, Lindsay

2018-04-10

Promoting resilience among displaced adolescent girls in northern Pakistan may buffer against developmental risks such as violence exposure and associated longer-term consequences for physical and mental well-being. However, girls' access to such programming may be limited by social norms restricting movement. A mixed-method evaluation examined change over time, feasibility, and acceptability of the COMPASS program in three districts of Khyber-Pakhtunkhwa province through a single-group within-participant pretest-posttest of adolescent girls aged 12-19 enrolled in the intervention (n = 78), and qualitative in-depth interviews with girls following posttest completion (n = 15). Primary outcomes included improvements in movement, safety, and comfort discussing life skills topics with caregivers, operationalized quantitatively as number of places visited in the previous month, number of spaces that girls felt safe visiting, and comfort discussing puberty, education, working outside the home, and marriage, respectively. Secondary outcomes included psychosocial well-being, gendered rites of passage, social support networks, perceptions of support for survivors of violence, and knowledge of services. Quantitative pretest-posttest findings included significant improvements in movement, psychosocial well-being, and some improvements in social support, knowledge of services, and gendered rites of passage; findings on safety and comfort discussing life skills topics were not significant. Qualitative findings illuminated themes related to definitions of safety and freedom of movement, perceptions and acceptability of program content, perceptions of social support, and perceptions of blame and support and knowledge of services in response to violence. Taken together, findings illustrate positive impacts of life skills programming, and the need for societal changes on gender norms to improve girls' safety in public spaces and access to resources.

The relationship between income and food insecurity among Oregon residents: does social support matter?

PubMed

De Marco, Molly; Thorburn, Sheryl

2009-11-01

Millions of US households experienced food insecurity in 2005. Research indicates that low wages and little social support contribute to food insecurity. The present study aimed to examine whether social support moderates the relationship between income and food insecurity. Using a mail survey, we collected data on social support sources (social network, intimate partner and community) and social support functions from a social network (instrumental, informational and emotional). We used hierarchical logistic regression to examine the potential moderation of various measures of social support on the relationship between income and food insecurity, adjusting for potential confounding variables. Oregon, USA. A stratified random sample of Oregonians aged 18-64 years (n 343). We found no evidence of an association between social support and food insecurity, nor any evidence that social support acts as a moderator between income and food insecurity, regardless of the measure of social support used. Although previous research suggested that social support could offset the negative impact of low income on food security, our study did not find support for such an effect.

Informational and emotional elements in online support groups: a Bayesian approach to large-scale content analysis.

PubMed

Deetjen, Ulrike; Powell, John A

2016-05-01

This research examines the extent to which informational and emotional elements are employed in online support forums for 14 purposively sampled chronic medical conditions and the factors that influence whether posts are of a more informational or emotional nature. Large-scale qualitative data were obtained from Dailystrength.org. Based on a hand-coded training dataset, all posts were classified into informational or emotional using a Bayesian classification algorithm to generalize the findings. Posts that could not be classified with a probability of at least 75% were excluded. The overall tendency toward emotional posts differs by condition: mental health (depression, schizophrenia) and Alzheimer's disease consist of more emotional posts, while informational posts relate more to nonterminal physical conditions (irritable bowel syndrome, diabetes, asthma). There is no gender difference across conditions, although prostate cancer forums are oriented toward informational support, whereas breast cancer forums rather feature emotional support. Across diseases, the best predictors for emotional content are lower age and a higher number of overall posts by the support group member. The results are in line with previous empirical research and unify empirical findings from single/2-condition research. Limitations include the analytical restriction to predefined categories (informational, emotional) through the chosen machine-learning approach. Our findings provide an empirical foundation for building theory on informational versus emotional support across conditions, give insights for practitioners to better understand the role of online support groups for different patients, and show the usefulness of machine-learning approaches to analyze large-scale qualitative health data from online settings. © The Author 2016. Published by Oxford University Press on behalf of the American Medical Informatics Association. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

INTERNET DEPENDENCE IN CHINESE HIGH SCHOOL STUDENTS: RELATIONSHIP WITH SEX, SELF-ESTEEM, AND SOCIAL SUPPORT.

PubMed

Zhang, Ruiping

2015-08-01

This cross-sectional study investigated the relationships among self-esteem, social support, and Internet dependence. A sample of young people aged between 15 and 18 years old (M age = 16.3 yr., SD = 0.7; 470 boys, 441 girls) completed measures of the Rosenberg Self-Esteem Scale, the Perceived Social Support Scale, and the Internet Dependence Test. According to the cognitive-behavioral model of problematic Internet use, social support should mediate the relationship between self-esteem and Internet dependence. Furthermore, based on previous research it was predicted that boys would score higher on Internet dependence than women. Support for this model was obtained. Internet dependent students were more likely to be boys. Self-esteem and social support were negatively correlated with Internet dependence. The relationship between self-esteem and Internet dependence was mediated by social support. Although the effect sizes were small, the findings of the present study are of significance in investigating adolescents' Internet dependence.

From Childhood Maltreatment to Allostatic Load in Adulthood: The Role of Social Support

PubMed Central

Horan, Jacqueline M.; Widom, Cathy S.

2017-01-01

Although previous research has documented that social support acts as a protective factor for individuals exposed to trauma, most research relies on assessments of social support at one point in time. The present study used data from a prospective cohort design study to examine the stability of social support from childhood through middle adulthood in individuals with documented histories of childhood abuse and neglect and matched controls (aged 0–11) and assessed the impact of social support on allostatic load, a composite measure of physiological stress response assessed through blood tests and physical measurements, in middle adulthood. Maltreated children are more likely to have unstable social support across the life span, compared to matched controls. Social support across the life span partially mediated the relationship between child maltreatment and allostatic load in adulthood, although there were differences by race and sex. These findings have implications for interventions to prevent the negative consequences of child maltreatment. PMID:26260146

The Relationship between Motor Skills, Perceived Social Support, and Internalizing Problems in a Community Adolescent Sample.

PubMed

Mancini, Vincent O; Rigoli, Daniela; Heritage, Brody; Roberts, Lynne D; Piek, Jan P

2016-01-01

Poor motor skills are associated with a range of psychosocial consequences, including internalizing (anxious and depressive) symptoms. The Elaborated Environmental Stress Hypothesis provides a causal framework to explain this association. The framework posits that motor skills impact internalizing problems through an indirect effect via perceived social support. However, empirical evaluation is required. We examined whether motor skills had an indirect effect on anxious and depressive symptoms via perceived family support domains. This study used a community sample of 93 adolescents (12-16 years). Participants completed measures of motor skills, perceived social support across three dimensions (family, friend, and significant other), depressive symptoms, and anxious symptoms. Age, gender, verbal IQ, and ADHD symptoms were included as control variables. Regression analysis using PROCESS revealed that motor skills had an indirect effect on depressive symptoms via perceived family support, but not by perceived friend support or significant other support. The negative association between motor skills and anxious symptoms was not mediated by any perceived social support domain. Findings are consistent with previous literature indicating an association between motor skills and internalizing problems. However, we identified a different pattern of relationships across anxious and depressive symptoms. While anxiety and depressive symptoms were highly correlated, motor skills had an indirect effect on depressive symptoms via perceived family support only. Our findings highlight the importance of family support as a potential protective factor in the onset of depressive symptoms. This study provides partial support for the Elaborated Environmental Stress Hypothesis, however further research is required.

The Relationship between Motor Skills, Perceived Social Support, and Internalizing Problems in a Community Adolescent Sample

PubMed Central

Mancini, Vincent O.; Rigoli, Daniela; Heritage, Brody; Roberts, Lynne D.; Piek, Jan P.

2016-01-01

Objectives: Poor motor skills are associated with a range of psychosocial consequences, including internalizing (anxious and depressive) symptoms. The Elaborated Environmental Stress Hypothesis provides a causal framework to explain this association. The framework posits that motor skills impact internalizing problems through an indirect effect via perceived social support. However, empirical evaluation is required. We examined whether motor skills had an indirect effect on anxious and depressive symptoms via perceived family support domains. Methods: This study used a community sample of 93 adolescents (12–16 years). Participants completed measures of motor skills, perceived social support across three dimensions (family, friend, and significant other), depressive symptoms, and anxious symptoms. Age, gender, verbal IQ, and ADHD symptoms were included as control variables. Results: Regression analysis using PROCESS revealed that motor skills had an indirect effect on depressive symptoms via perceived family support, but not by perceived friend support or significant other support. The negative association between motor skills and anxious symptoms was not mediated by any perceived social support domain. Conclusions: Findings are consistent with previous literature indicating an association between motor skills and internalizing problems. However, we identified a different pattern of relationships across anxious and depressive symptoms. While anxiety and depressive symptoms were highly correlated, motor skills had an indirect effect on depressive symptoms via perceived family support only. Our findings highlight the importance of family support as a potential protective factor in the onset of depressive symptoms. This study provides partial support for the Elaborated Environmental Stress Hypothesis, however further research is required. PMID:27148149

Supporting Active Mobility and Green Jobs through the Promotion of Cycling

PubMed Central

Scotini, Rodrigo; Skinner, Ian; Racioppi, Francesca; Fusé, Virginia; Bertucci, Jonas de Oliveira; Tsutsumi, Rie

2017-01-01

This article is a summary of the main findings of the study “Riding towards the green economy: cycling and green jobs”, which was developed in the context of the Transport, Health and Environment pan-European Programme (THE PEP). It builds on previous work under THE PEP, which demonstrated the job creation potential of cycling and of green and healthy transport more generally. The report summarized in this article collected data on jobs associated with cycling directly from city authorities and analysed these to re-assess previous estimates of the job creation potential of cycling. It concluded that the number of cycling-related jobs in the pan-European Region could increase by 435,000 in selected major cities if they increased their cycling share to that of the Danish capital Copenhagen. The implications and potential role of municipal and sub-national authorities in facilitating cycling while supporting economic development are then discussed. These findings indicate that investment in policies that promote cycling could deliver not only important benefits for health, the environment and the quality of urban life, but could also contribute to a sizable creation of job opportunities. Authorities need to be proactive in promoting cycling in order to deliver these benefits. PMID:29257121

The sugar-sweetened beverage wars: public health and the role of the beverage industry

PubMed Central

Welsh, Jean A.; Lundeen, Elizabeth A.; Stein, Aryeh D.

2015-01-01

Purpose of review To discuss the current data on sugar-sweetened beverage (SSB) consumption trends, evidence of the health impact, and the role of industry in efforts to reduce the consumption. Recent findings Previously rising SSB consumption rates have declined recently, but continue to contribute added sugars beyond the limit advised by the American Heart Association. A recent meta-analysis concluded that SSBs likely increase body weight and recent long-term studies support the previous findings of increased risk of diabetes, dyslipidemia, and hypertension. Beverage companies have played an active role in some SSB reduction efforts by reducing the sale of SSBs in schools, limiting television advertising to children, and increasing the availability of smaller portion-size options. Industry has opposed efforts to restrict the availability of large portion sizes and implement an excise tax. Current industry efforts include the promotion of alternative beverages perceived to be healthier as well as SSBs through Internet and social media. Summary Continuing high SSB consumption and associated health risks highlight the need for further public health action. The beverage industry has supported some efforts to reduce the consumption of full sugar beverages, but has actively opposed others. The impact of industry efforts to promote beverage alternatives perceived as healthier is unknown. PMID:23974767

Estimating the outcome of a pregnancy test: women's judgements in foresight and hindsight.

PubMed

Pennington, D C; Rutter, D R; McKenna, K; Morley, I E

1980-11-01

Previous research on judgement under uncertainty has suggested that, when we know the outcome of some event, we perceive that outcome as more likely than when we do not have outcome knowledge. That is, in comparison with judgements made in foresight, judgements made in hindsight are biased in the direction of the outcome the judge believes to have happened. While the effect appears to be robust in the laboratory, it has very seldom been tested in real life. This experiment therefore went outside the laboratory, and examined women's estimates of the outcome of a pregnacy test. It was predicted that those who knew the result of their test (hindsight) would perceive that outcome as more likely than those asked to make the estimate before they knew the result (foresight). The prediction was supported only for women whose result was positive and, furthermore, the positive group made consistently higher estimates than the negative group, both in hindsight and foresight. The findings were therefore less marked and more complex than in previous laboratory research, and support the argument that experiments and materials must be constructed with salience for the subjects. The findings are interpreted in the light ot Tversky & Kahneman's (1974) work on heuristic rules of thinking.

Representational constraints on the development of memory and metamemory: a developmental-representational theory.

PubMed

Ceci, Stephen J; Fitneva, Stanka A; Williams, Wendy M

2010-04-01

Traditional accounts of memory development suggest that maturation of prefrontal cortex (PFC) enables efficient metamemory, which enhances memory. An alternative theory is described, in which changes in early memory and metamemory are mediated by representational changes, independent of PFC maturation. In a pilot study and Experiment 1, younger children failed to recognize previously presented pictures, yet the children could identify the context in which they occurred, suggesting these failures resulted from inefficient metamemory. Older children seldom exhibited such failure. Experiment 2 established that this was not due to retrieval-time recoding. Experiment 3 suggested that young children's representation of a picture's attributes explained their metamemory failure. Experiment 4 demonstrated that metamemory is age-invariant when representational quality is controlled: When stimuli were equivalently represented, age differences in memory and metamemory declined. These findings do not support the traditional view that as children develop, neural maturation permits more efficient monitoring, which leads to improved memory. These findings support a theory based on developmental-representational synthesis, in which constraints on metamemory are independent of neurological development; representational features drive early memory to a greater extent than previously acknowledged, suggesting that neural maturation has been overimputed as a source of early metamemory and memory failure. PsycINFO Database Record (c) 2010 APA, all rights reserved.

Phylogeny of Eutardigrada: new molecular data and their morphological support lead to the identification of new evolutionary lineages.

PubMed

Bertolani, Roberto; Guidetti, Roberto; Marchioro, Trevor; Altiero, Tiziana; Rebecchi, Lorena; Cesari, Michele

2014-07-01

An extensive study of the phylogeny of Eutardigrada, the largest class of Tardigrada, has been performed analyzing one hundred and forty sequences (eighty of which newly obtained) representative of one hundred and twenty-nine specimens belonging to all families (except Necopinatidae) of this class. The molecular (18S and 28S rRNA) results were compared with new and previous morphological data, allowing us to find new phylogenetic relationships, to identify new phylogenetic lineages, to erect new taxa for some lineages, and to find several morphological synapomorphies supporting the identified clusters. The class Eutardigrada has been confirmed and, within it, the orders Apochela and Parachela, the superfamilies Macrobiotoidea, Hypsibioidea, Isohypsibioidea, and Eohypsibioidea, and all the families and subfamilies considered, although with emended diagnoses in several cases. In addition, new taxa have been erected: the new subfamily Pilatobiinae (Hypsibiidae) with the new genus Pilatobius, as well as an upgrading of Diphascon and Adropion to genus level, previously considered subgenera of Diphascon. Our results demonstrate that while molecular analysis is an important tool for understanding phylogeny, an integrative and comparative approach using both molecular and morphological data is necessary to better elucidate evolutionary relationships. Copyright © 2014 Elsevier Inc. All rights reserved.

Codon adaptation and synonymous substitution rate in diatom plastid genes.

PubMed

Morton, Brian R; Sorhannus, Ulf; Fox, Martin

2002-07-01

Diatom plastid genes are examined with respect to codon adaptation and rates of silent substitution (Ks). It is shown that diatom genes follow the same pattern of codon usage as other plastid genes studied previously. Highly expressed diatom genes display codon adaptation, or a bias toward specific major codons, and these major codons are the same as those in red algae, green algae, and land plants. It is also found that there is a strong correlation between Ks and variation in codon adaptation across diatom genes, providing the first evidence for such a relationship in the algae. It is argued that this finding supports the notion that the correlation arises from selective constraints, not from variation in mutation rate among genes. Finally, the diatom genes are examined with respect to variation in Ks among different synonymous groups. Diatom genes with strong codon adaptation do not show the same variation in synonymous substitution rate among codon groups as the flowering plant psbA gene which, previous studies have shown, has strong codon adaptation but unusually high rates of silent change in certain synonymous groups. The lack of a similar finding in diatoms supports the suggestion that the feature is unique to the flowering plant psbA due to recent relaxations in selective pressure in that lineage.

Can stories reduce abortion stigma? Findings from a longitudinal cohort study.

PubMed

Cockrill, Kate; Biggs, Antonia

2018-03-01

Women often hide or selectively disclose abortion experiences due to stigma. Secrecy can help women avoid stigma but may also result in isolation and a lack of social support and contribute to broader social silence. This study assesses whether a book-club intervention can support abortion disclosure among book club participants and improve participants' affective responses towards women who have abortions and abortion providers. A total of 109 women from 13 all-female book clubs located in 9 US states read and discussed a non-fiction book that included stories about pregnancy and abortion, participated in a book club discussion and completed baseline, immediate post-intervention and endline surveys. In 10 out of the 13 book club discussions, at least one member disclosed having had a previous abortion. Overall, 15 of the 19 women who privately reported having a previous abortion self-disclosed one or more abortions during the book club discussion. Following the book club intervention, women reported having more positive feelings toward women who have abortions and abortion providers. Greater improvement and longer lasting effects were seen in groups where there was also an in-person disclosure of abortion experience. Findings suggest that exposure to the stories of women who have had abortions can reduce abortion stigma.

The convergent and discriminant validity of burnout measures in sport: a multi-trait/multi-method analysis.

PubMed

Cresswell, Scott L; Eklund, Robert C

2006-02-01

Athlete burnout research has been hampered by the lack of an adequate measurement tool. The Athlete Burnout Questionnaire (ABQ) and the Maslach Burnout Inventory General Survey (MBI-GS) are two recently developed self-report instruments designed to assess burnout. The convergent and discriminant validity of the ABQ and MBI-GS were assessed through multi-trait/multi-method analysis with a sporting population. Overall, the ABQ and the MBI-GS displayed acceptable convergent validity with matching subscales highly correlated, and satisfactory internal discriminant validity with lower correlations between non-matching subscales. Both scales also indicated an adequate discrimination between the concepts of burnout and depression. These findings add support to previous findings in non-sporting populations that depression and burnout are separate constructs. Based on the psychometric results, construct validity analysis and practical considerations, the results support the use of the ABQ to assess athlete burnout.

Effect of Problem-Solving Therapy on Depressed Low-Income Homebound Older Adults’ Death/Suicidal Ideation and Hopelessness

PubMed Central

Choi, Namkee G.; Marti, C. Nathan; Conwell, Yeates

2015-01-01

Previous study findings of psychotherapy’s effect on suicide prevention have been inconsistent. The present study reports the results of secondary analyses of outcome data from a short-term depression treatment on reducing death/suicidal ideation among 158 low-income homebound adults aged 50+. The treatment, in-person or telehealth problem-solving therapy (PST), compared to telephone support call, has been found effective in reducing depressive symptoms and disability among participants. Compared to support call participants, tele-PST participants, but not in-person PST participants, exhibited lower ideation ratings across the follow-up period. Effect sizes at 36 weeks were 0.31 for tele-PST and 0.17 for in-person PST. Hopelessness mediated the effect of tele-PST but not in-person PST; however, in-person PST also alleviated hopelessness, which led to lower ideation. Clinical implications of the findings are discussed. PMID:26456016

Effect of Problem-Solving Therapy on Depressed Low-Income Homebound Older Adults' Death/Suicidal Ideation and Hopelessness.

PubMed

Choi, Namkee G; Marti, C Nathan; Conwell, Yeates

2016-06-01

Previous study findings of psychotherapy's effect on suicide prevention have been inconsistent. This study reports the results of secondary analyses of outcome data from a short-term depression treatment on reducing death/suicidal ideation among 158 low-income homebound adults aged 50+. The treatment, in-person or telehealth problem-solving therapy (PST), compared with telephone support call, has been found effective in reducing depressive symptoms and disability among participants. Compared with support call participants, tele-PST participants, but not in-person PST participants, exhibited lower ideation ratings across the follow-up period. Effect sizes at 36 weeks were 0.31 for tele-PST and 0.17 for in-person PST. Hopelessness mediated the effect of tele-PST but not in-person PST; however, in-person PST also alleviated hopelessness, which led to lower ideation. Clinical implications of the findings are discussed. © 2015 The American Association of Suicidology.

From nutrition scientist to nutrition communicator: why you should take the leap.

PubMed

Miller, Gregory D; Cohen, Nancy L; Fulgoni, Victor L; Heymsfield, Steven B; Wellman, Nancy S

2006-06-01

Media reports about new nutrition research are abundant, but they may confuse the public when unqualified sources are quoted, findings are reported out of context, or results appear to contradict previous studies. The nutrition scientist who conducts the research is best qualified to communicate the findings accurately and within context. Yet, some nutrition scientists hesitate to speak out in the media because of barriers such as a lack of time, media skills, and support from administrators or fear that their results will be miscommunicated or sensationalized. Scientists who do grant media interviews enjoy benefits such as positively affecting the public's eating habits, influencing health and nutrition policy, and receiving heightened attention to their work, which can lead to future research funding. Scientists who want to improve their media skills can seek support from their institution's public relations professionals and can learn from continuing education opportunities at conferences and self-study through articles and other resources.

The scientific consensus on climate change as a gateway belief: experimental evidence.

PubMed

van der Linden, Sander L; Leiserowitz, Anthony A; Feinberg, Geoffrey D; Maibach, Edward W

2015-01-01

There is currently widespread public misunderstanding about the degree of scientific consensus on human-caused climate change, both in the US as well as internationally. Moreover, previous research has identified important associations between public perceptions of the scientific consensus, belief in climate change and support for climate policy. This paper extends this line of research by advancing and providing experimental evidence for a "gateway belief model" (GBM). Using national data (N = 1104) from a consensus-message experiment, we find that increasing public perceptions of the scientific consensus is significantly and causally associated with an increase in the belief that climate change is happening, human-caused and a worrisome threat. In turn, changes in these key beliefs are predictive of increased support for public action. In short, we find that perceived scientific agreement is an important gateway belief, ultimately influencing public responses to climate change.

Female chacma baboons form strong, equitable, and enduring social bonds

PubMed Central

Beehner, Jacinta C.; Bergman, Thore J.; Crockford, Catherine; Engh, Anne L.; Moscovice, Liza R.; Wittig, Roman M.; Seyfarth, Robert M.; Cheney, Dorothy L.

2010-01-01

Analyses of the pattern of associations, social interactions, coalitions, and aggression among chacma baboons (Papio hamadryas ursinus) in the Okavango Delta of Botswana over a 16-year period indicate that adult females form close, equitable, supportive, and enduring social relationships. They show strong and stable preferences for close kin, particularly their own mothers and daughters. Females also form strong attachments to unrelated females who are close to their own age and who are likely to be paternal half-sisters. Although absolute rates of aggression among kin are as high as rates of aggression among nonkin, females are more tolerant of close relatives than they are of others with whom they have comparable amounts of contact. These findings complement previous work which indicates that the strength of social bonds enhances the fitness of females in this population and support findings about the structure and function of social bonds in other primate groups. PMID:20976293

The Scientific Consensus on Climate Change as a Gateway Belief: Experimental Evidence

PubMed Central

van der Linden, Sander L.; Leiserowitz, Anthony A.; Feinberg, Geoffrey D.; Maibach, Edward W.

2015-01-01

There is currently widespread public misunderstanding about the degree of scientific consensus on human-caused climate change, both in the US as well as internationally. Moreover, previous research has identified important associations between public perceptions of the scientific consensus, belief in climate change and support for climate policy. This paper extends this line of research by advancing and providing experimental evidence for a “gateway belief model” (GBM). Using national data (N = 1104) from a consensus-message experiment, we find that increasing public perceptions of the scientific consensus is significantly and causally associated with an increase in the belief that climate change is happening, human-caused and a worrisome threat. In turn, changes in these key beliefs are predictive of increased support for public action. In short, we find that perceived scientific agreement is an important gateway belief, ultimately influencing public responses to climate change. PMID:25714347

Promoting energy-balance behaviors among ethnically diverse adolescents: overview and baseline findings of The Central Texas CATCH Middle School Project.

PubMed

Springer, Andrew E; Kelder, Steven H; Byrd-Williams, Courtney E; Pasch, Keryn E; Ranjit, Nalini; Delk, Joanne E; Hoelscher, Deanna M

2013-10-01

The Central Texas Coordinated Approach To Child Health (CATCH) Middle School Project is a 3.5-year school-based project aimed at promoting physical activity (PA), healthy eating, and obesity prevention among public middle school students in Texas. This article describes the CATCH intervention model and presents baseline findings from spring 2009. CATCH comprises six core components: CATCH Team, CATCH PE, CATCH Classroom, CATCH Eat Smart Cafeteria, CATCH Family, and CATCH Social Marketing. A group randomized serial cross-sectional design is being employed to test the effect of three program support conditions (n = 10 schools each) on energy-balance behaviors: Basic (training and curriculum only), Basic Plus (training and curriculum plus CATCH facilitator support), and Basic Plus Social Marketing (all inputs plus social marketing component). The study sample is composed of a cross-sectional sample of eighth-grade students (primary outcome evaluation sample) and sixth- and seventh-grade students (PE process evaluation sample) who are selected and measured each year. At baseline, 37.9% of eight-grade students (n = 2,841; 13.9 years) were overweight/obese and 19.2% were obese. Eighth-grade students reported, on average, consuming sugar-sweetened beverages more than two times on the previous day and fruits and vegetables roughly three times on the previous day; only two of five school districts surpassed the recommended 50% cut-point for class time spent in moderate-and-vigorous PA as measured in classes of sixth- and seventh-grade students. Additional behavioral findings are reported. Body mass index and behaviors were comparable across conditions. Baseline findings underscore the need to promote student energy-balance behaviors.

Telephone helplines as a source of support for eating disorders: Service user, carer, and health professional perspectives.

PubMed

Prior, Amie-Louise; Woodward, Debbie; Hoefkens, Toni; Clayton, Debbie; Thirlaway, Katie; Limbert, Caroline

2018-01-01

Access to care for eating disorders can be problematic for numerous reasons including lack of understanding and delays with treatment referrals. Previous research has highlighted the benefits of telephone helplines as an accessible source of support for those who may not wish to access face-to-face support or to fill a gap for those waiting for treatment. This study aimed to gain an insight into the perspectives of those who may use or refer others to a telephone helpline in order to identify the requirements of such a service. Triangulation of service user, carer and health professionals' perspectives resulted in identification of themes relating to the type of support, delivery and practicalities of a helpline. The findings indicated that telephone helplines may offer numerous benefits for individuals with an eating disorder, whether accessed as a first step, alongside treatment or as an extension of this support when in recovery. Additionally helplines may provide an opportunity for carers to access information and discuss their own experiences, while supporting their loved one. Raising awareness of these services is important to encourage those affected by an eating disorder to access and make the most of this type of support. These findings offer an insight into the key requirements for new and existing service development with regard to both the type of support and the method of communication required by individuals with eating disorders.

Fluid Fe(1 - x)Hx under extreme conditions

NASA Astrophysics Data System (ADS)

Seclaman, Alexandra; Wilson, Hugh F.; Cohen, Ronald E.

We study the fluid Fe-H binary system using first principles molecular dynamics (FPMD) and a new FPMD-based method, CATS, in order to compute efficiently and accurately the equation of state of Fe-H fluids up to 5 TPa and 30,000K. We constructed GRBV-type LDA pseudopotentials for Fe and H with small rcuts in order to avoid pseudo-core overlap. In the liquid Fe regime we find good agreement with previous works, up to the pressures where data is available. In the high density regime of pure H we also find good agreement with previous results. Previous work has been focused on low Fe concentrations in metallic liquid H. We extend previous studies by investigating several intermediate Fe(1 - x)Hx liquid compositions, as well as metallic liquid H and Fe. Preliminary results indicate extreme compositional pressure effects under isothermic and isochoric conditions, 3.9 TPa difference between Fe and H at 20,000K. Thermal pressure effects are comparatively small, 0.12-0.15 TPa per 10,000K for H and Fe, respectively. Equations of state will be presented and fluid immiscibility will be discussed. This work has been supported by the ERC Advanced Grant ToMCaT and NSF and the Carnegie Institution.

Late-onset schizophrenia: do recent studies support categorizing LOS as a subtype of schizophrenia?

PubMed

Maglione, Jeanne E; Thomas, Scot E; Jeste, Dilip V

2014-05-01

To review recent literature about late-onset schizophrenia (LOS): schizophrenia with onset between ages 40 and 60 years. New findings are presented in the context of the previous literature. Newer studies continue to suggest that early-onset schizophrenia (EOS) and LOS share fundamental clinical features (i.e., positive symptoms, negative symptoms, functional deficits). One larger recent study confirmed earlier findings that LOS differs from EOS in several important ways, including predominance of women, lower severity of positive symptoms, and lower average antipsychotic dose requirement. However, this study did not find LOS patients were more likely to have the paranoid subtype or to have less severe negative symptoms compared with EOS patients. New neuroimaging and molecular studies are identifying possible differences in the underlying pathophysiology of EOS and schizophrenia developing in mid-life to late-life; however, more research is needed to confirm these findings and determine their significance. No studies evaluated treatment strategies specifically in LOS. LOS continues to be an understudied area. Recent studies add support to the idea that LOS may be a distinct subtype of schizophrenia. Studies designed to elucidate the pathophysiology of LOS in comparison with EOS and to assess treatment strategies in this population are needed.

The Neural Correlates of Emotion Regulation by Implementation Intentions

PubMed Central

Hallam, Glyn P.; Webb, Thomas L.; Sheeran, Paschal; Miles, Eleanor; Wilkinson, Iain D.; Hunter, Michael D.; Barker, Anthony T.; Woodruff, Peter W. R.; Totterdell, Peter; Lindquist, Kristen A.; Farrow, Tom F. D.

2015-01-01

Several studies have investigated the neural basis of effortful emotion regulation (ER) but the neural basis of automatic ER has been less comprehensively explored. The present study investigated the neural basis of automatic ER supported by ‘implementation intentions’. 40 healthy participants underwent fMRI while viewing emotion-eliciting images and used either a previously-taught effortful ER strategy, in the form of a goal intention (e.g., try to take a detached perspective), or a more automatic ER strategy, in the form of an implementation intention (e.g., “If I see something disgusting, then I will think these are just pixels on the screen!”), to regulate their emotional response. Whereas goal intention ER strategies were associated with activation of brain areas previously reported to be involved in effortful ER (including dorsolateral prefrontal cortex), ER strategies based on an implementation intention strategy were associated with activation of right inferior frontal gyrus and ventro-parietal cortex, which may reflect the attentional control processes automatically captured by the cue for action contained within the implementation intention. Goal intentions were also associated with less effective modulation of left amygdala, supporting the increased efficacy of ER under implementation intention instructions, which showed coupling of orbitofrontal cortex and amygdala. The findings support previous behavioural studies in suggesting that forming an implementation intention enables people to enact goal-directed responses with less effort and more efficiency. PMID:25798822

Comparative Study of Continuous and Pulsatile Left Ventricular Assist Devices on Hemodynamics of a Pediatric End-to-Side Anastomotic Graft

PubMed Central

Yang, Ning; Deutsch, Steven; Paterson, Eric G.; Manning, Keefe B.

2013-01-01

Although there are many studies that focus on understanding the consequence of pumping mode (continuous vs. pulsatile) associated with ventricular assist devices (VADs) on pediatric vascular pulsatility, the impact on local hemodynamics has been largely ignored. Hence, we compare not only the hemodynamic parameters indicative of pulsatility but also the local flow fields in the aorta and the great vessels originating from the aortic arch. A physiologic graft anastomotic model is constructed based on a pediatric, patient specific, aorta with a graft attached on the ascending aorta. The flow is simulated using a previously validated second-order accurate Navier–Stokes flow solver based upon a finite volume approach. The major findings are: (1) pulsatile support provides a greater degree of vascular pulsatility when compared to continuous support, which, however, is still 20% less than pulsatility in the healthy aorta; (2) pulsatile support increases the flow in the great vessels, while continuous support decreases it; (3) complete VAD support results in turbulence in the aorta, with maximum principal Reynolds stresses for pulsatile support and continuous support of 7081 and 249 dyn/cm2, respectively; (4) complete pulsatile support results in a significant increase in predicted hemolysis in the aorta; and (5) pulsatile support causes both higher time-averaged wall shear stresses (WSS) and oscillatory shear indices (OSI) in the aorta than does continuous support. These findings will help to identify the risk of graft failure for pediatric patients with pulsatile and continuous VADs. PMID:24348881

An assessment of the direction-finding accuracy of bat biosonar beampatterns.

PubMed

Gilani, Uzair S; Müller, Rolf

2016-02-01

In the biosonar systems of bats, emitted acoustic energy and receiver sensitivity are distributed over direction and frequency through beampattern functions that have diverse and often complicated geometries. This complexity could be used by the animals to determine the direction of incoming sounds based on spectral signatures. The present study has investigated how well bat biosonar beampatterns are suited for direction finding using a measure of the smallest estimator variance that is possible for a given direction [Cramér-Rao lower bound (CRLB)]. CRLB values were estimated for numerical beampattern estimates derived from 330 individual shape samples, 157 noseleaves (used for emission), and 173 outer ears (pinnae). At an assumed 60 dB signal-to-noise ratio, the average value of the CRLB was 3.9°, which is similar to previous behavioral findings. Distribution for the CRLBs in individual beampatterns had a positive skew indicating the existence of regions where a given beampattern does not support a high accuracy. The highest supported accuracies were for direction finding in elevation (with the exception of phyllostomid emission patterns). No large, obvious differences in the CRLB (greater 2° in the mean) were found between the investigated major taxonomic groups, suggesting that different bat species have access to similar direction-finding information.

What qualities are valued in residential direct care workers from the perspective of people with an intellectual disability and managers of accommodation services?

PubMed

Dodevska, G A; Vassos, M V

2013-07-01

To date, the descriptions of a 'good' direct care worker used to recruit workers for disability services have largely been drawn up by managerial professionals in charge of hiring supports for people with disabilities. However, previous research highlights that these professionals conceptualise a 'good' direct care worker differently from service users with an intellectual disability (ID), with professionals placing an emphasis on describing workers with a range of practical skills and knowledge and service users placing an emphasis on describing workers with interpersonal skills. The aim of this research was to replicate this finding using a methodological approach that rectifies some of the weaknesses of previous research in this field. Semi-structured interviews were conducted to explore the qualities that are valued in residential direct care workers (RDCWs) from the perspective of seven residents with ID and seven managers of accommodation services located in metropolitan Melbourne, Australia. Thematic and chi-squared analysis confirmed the findings of previous research with residents with an ID placing more of an emphasis on the interpersonal behaviours of RDCWs in their descriptions compared to the managers. The interpersonal skills of a potential worker along with their practical skills and knowledge must be considered when recruiting RDCWs. It is also implied that given the different conceptualisation of a 'good' direct care worker across service users and professionals, increased service user participation in the organisation of appropriate supports is warranted. © 2012 The Authors. Journal of Intellectual Disability Research © 2012 John Wiley & Sons Ltd, MENCAP & IASSID.

Response to an Abnormal Ovarian Cancer Screening Test Result: Test of the Social Cognitive Processing and Cognitive Social Health Information Processing Models

PubMed Central

Andrykowski, Michael A.; Pavlik, Edward J.

2009-01-01

All cancer screening tests produce a proportion of abnormal results requiring follow-up. Consequently, the cancer screening setting is a natural laboratory for examining psychological and behavioral response to a threatening health-related event. This study tested hypotheses derived from the Social Cognitive Processing and Cognitive-Social Health Information Processing models in trying to understand response to an abnormal ovarian cancer (OC) screening test result. Women (n=278) receiving an abnormal screening test result a mean of 7 weeks earlier were assessed prior to a repeat screening test intended to clarify their previous abnormal result. Measures of disposition (optimism, informational coping style), social environment (social support and constraint), emotional processing, distress, and benefit finding were obtained. Regression analyses indicated greater distress was associated with greater social constraint and emotional processing and a monitoring coping style in women with a family history of OC. Distress was unrelated to social support. Greater benefit finding was associated with both greater social constraint and support and greater distress. The primacy of social constraint in accounting for both benefit-finding and distress was noteworthy and warrants further research on the role of social constraint in adaptation to stressful events. PMID:20419561

Genome Data Provides High Support for Generic Boundaries in Burkholderia Sensu Lato

PubMed Central

Beukes, Chrizelle W.; Palmer, Marike; Manyaka, Puseletso; Chan, Wai Y.; Avontuur, Juanita R.; van Zyl, Elritha; Huntemann, Marcel; Clum, Alicia; Pillay, Manoj; Palaniappan, Krishnaveni; Varghese, Neha; Mikhailova, Natalia; Stamatis, Dimitrios; Reddy, T. B. K.; Daum, Chris; Shapiro, Nicole; Markowitz, Victor; Ivanova, Natalia; Kyrpides, Nikos; Woyke, Tanja; Blom, Jochen; Whitman, William B.; Venter, Stephanus N.; Steenkamp, Emma T.

2017-01-01

Although the taxonomy of Burkholderia has been extensively scrutinized, significant uncertainty remains regarding the generic boundaries and composition of this large and heterogeneous taxon. Here we used the amino acid and nucleotide sequences of 106 conserved proteins from 92 species to infer robust maximum likelihood phylogenies with which to investigate the generic structure of Burkholderia sensu lato. These data unambiguously supported five distinct lineages, of which four correspond to Burkholderia sensu stricto and the newly introduced genera Paraburkholderia, Caballeronia, and Robbsia. The fifth lineage was represented by P. rhizoxinica. Based on these findings, we propose 13 new combinations for those species previously described as members of Burkholderia but that form part of Caballeronia. These findings also suggest revision of the taxonomic status of P. rhizoxinica as it is does not form part of any of the genera currently recognized in Burkholderia sensu lato. From a phylogenetic point of view, Burkholderia sensu stricto has a sister relationship with the Caballeronia+Paraburkholderia clade. Also, the lineages represented by P. rhizoxinica and R. andropogonis, respectively, emerged prior to the radiation of the Burkholderia sensu stricto+Caballeronia+Paraburkholderia clade. Our findings therefore constitute a solid framework, not only for supporting current and future taxonomic decisions, but also for studying the evolution of this assemblage of medically, industrially and agriculturally important species. PMID:28694797

Intention to breastfeed in low-income pregnant women: the role of social support and previous experience.

PubMed

Humphreys, A S; Thompson, N J; Miner, K R

1998-09-01

The purpose of this study was to describe the relationship between breastfeeding intention among socioeconomically disadvantaged pregnant women and maternal demographics, previous breastfeeding experience, and social support. A cross-sectional, convenience sampling strategy was employed for data collection. Low-income women (n = 1001) in a public hospital completed a six-page questionnaire about their infant feeding plans, demographics, and social support. Simple regression analyses were conducted to compare maternal breastfeeding intention with the hypothesized correlates. Breastfeeding intention was positively correlated with older maternal age, higher education, more breastfeeding experience, Hispanic ethnicity, and hearing about breastfeeding benefits from family members, the baby's father, and lactation consultants, but not from other health professionals. Health professionals' attitudes were less influential on women's infant feeding decisions than the attitudes and beliefs of members of women's social support networks. When controlling for breastfeeding experience (none vs any), some findings, varied, indicating a need for breastfeeding interventions tailored to women's level of experience. Use of peer counselors and lactation consultants, inclusion of a woman's family members in breastfeeding educational contacts, and creation of breastfeeding classes tailored to influential members of women's social support networks may improve breastfeeding rates among low-income women, especially those with no breastfeeding experience, more effectively than breastfeeding education to pregnant women that is solely conducted by health professionals.

The evolutionary psychology of mate selection in Morocco : A multivariate analysis.

PubMed

Walter, A

1997-06-01

Patterns of mate preference in Morocco are investigated in order to test whether they support hypotheses advanced by David Buss and other evolutionary psychologists. Because of the custom of cousin marriage in Morocco, a multivariate model that included cosocialization data was developed for the purpose of testing the Westermarck hypothesis of inbreeding avoidance. Hence, two previously separate domains of research are unified in one design that permits the further exploration of questions pertaining to the domain specificity of psychological mechanisms. Multiple independent mate choice predictors were identified using logistic regression analysis. Results support the Westermarck hypothesis of inbreeding avoidance. Sleeping in the same room during childhood was found in both sexes to produce an aversion to marriage. Other evidence suggests that aversion to inbreeding extends further among females than males in that females but not males show an aversion to marriage to related individuals with whom they had daily social contact in early childhood. The evolutionary prediction that females differ from males concerning resource holding capacity was also supported. Females showed a preference for males whom they judged to have higher social status than theirs, while this criterion was unimportant for males. The predicted sex difference in preferred age of marriage partner was also supported. Contrary to previous findings, the predicted difference between the sexes with regard to physical attractiveness was not supported.

The Social Interaction Phobia Scale: Continued support for the psychometric validity of the SIPS using clinical and non-clinical samples.

PubMed

Menatti, Alison R; Weeks, Justin W; Carleton, R Nicholas; Morrison, Amanda S; Heimberg, Richard G; Hope, Debra A; Blanco, Carlos; Schneier, Franklin R; Liebowitz, Michael R

2015-05-01

The present study sought to extend findings supporting the psychometric validity of a promising measure of social anxiety (SA) symptoms, the Social Interaction Phobia Scale (SIPS; Carleton et al., 2009). Analyses were conducted using three samples: social anxiety disorder (SAD) patients, generalized anxiety disorder (GAD) patients, and healthy controls. SIPS scores of SAD patients demonstrated internal consistency and construct validity, and the previously demonstrated three-factor structure of the SIPS was replicated. Further, the SIPS total score uniquely predicted SA symptoms, and SIPS scores were significantly higher for SAD patients than GAD patients or controls. Two cut-off scores that discriminated SAD patients from GAD patients and from healthy controls were identified. The current study is the first to replicate the SIPS three-factor model in a large, treatment-seeking sample of SAD patients and establish a cut-off score discriminating SAD from GAD patients. Findings support the SIPS as a valid, SAD-specific assessment instrument. Copyright © 2015 Elsevier Ltd. All rights reserved.

The needs of siblings of children with cancer: a nursing perspective.

PubMed

O'Shea, Eileen R; Shea, Joyce; Robert, Tracey; Cavanaugh, Cathleen

2012-01-01

Findings from research studies on the needs of siblings of children with cancer have highlighted the imperative that these siblings be supported and involved in the plan of care when a diagnosis of cancer is made. However, few studies have included the perspective of the nurse when evaluating sibling needs or identifying interventions used to meet the needs. This qualitative descriptive study used a combination of individual interviews and a focus group to capture perspectives from 13 pediatric oncology nurses employed at a leading Children's Hospital located in the northeast. Transcripts were analyzed for content and theme in relation to the 2 research questions. Needs identified included getting attention, wanting to know, having fears/worries, feeling at fault, wanting to help, and wanting a normal routine, whereas interventions identified included recognizing their needs, getting siblings involved, sharing appropriate information, being a resource, giving support, and bending the rules. Findings support previous studies that document the variety of needs experienced by siblings of children with cancer and offer examples of nursing interventions to meet these needs.

Beliefs, barriers, social support, and environmental influences related to diabetes risk behaviours among women with a history of gestational diabetes.

PubMed

Razee, Husna; van der Ploeg, Hidde P; Blignault, Ilse; Smith, Ben J; Bauman, Adrian E; McLean, Mark; Wah Cheung, N

2010-08-01

Women with previous gestational diabetes mellitus (GDM) are at increased risk of developing type 2 diabetes; this risk is higher in non-Caucasian women. This study explored the beliefs, attitudes, social support, environmental influences and other factors related to diabetes risk behaviours among Arabic, Cantonese/Mandarin, and English speaking women with recent GDM. Women living in the Sydney metropolitan area (Australia) who had GDM 6-36 months previously were included. In-depth semi-structured telephone interviews on women's experiences and perceptions of GDM and the lifestyle risk factors for developing type 2 diabetes were conducted in the language participants spoke at home (n=20 Arabic, 20 Cantonese/Mandarin, 17 English). Data were analysed for underlying themes using NVivo software. Mental distress, role perceptions, social support and cultural expectations were major issues related to women's struggles to find the right balance between the large proportion of household and child care responsibilities and leading a healthy lifestyle. Women's ability to follow a healthy lifestyle is embedded in their psychological wellbeing and the social and cultural context of their lives. The study highlights the need for a holistic approach that ensures personal support and access to services as well as lifestyle specific programs.

Teacher’s Autonomy Support and Engagement in Math: Multiple Mediating Roles of Self-efficacy, Intrinsic Value, and Boredom

PubMed Central

Wang, Jia; Liu, Ru-De; Ding, Yi; Xu, Le; Liu, Ying; Zhen, Rui

2017-01-01

Previous studies have highlighted the impacts of environmental factors (teacher’s autonomy support) and individual factors (self-efficacy, intrinsic value, and boredom) on academic engagement. This study aimed to investigate these variables and examine the relations among them. Three structural equation models tested the multiple mediational roles of self-efficacy, intrinsic value, and boredom in the relation between teacher’s autonomy support and behavioral, emotional, and cognitive engagement, respectively, in math. A total of 637 Chinese middle school students (313 males, 324 females; mean age = 14.82) voluntarily participated in this study. Results revealed that self-efficacy, intrinsic value, and boredom played important and mediating roles between perceived teacher’s autonomy support and student engagement. Specifically, these three individual variables partly mediated the relations between perceived teacher’s autonomy support and behavioral and cognitive engagement, while fully mediating the relation between perceived teacher’s autonomy support and emotional engagement. These findings complement and extend the understanding of factors affecting students’ engagement in math. PMID:28690560

Teacher's Autonomy Support and Engagement in Math: Multiple Mediating Roles of Self-efficacy, Intrinsic Value, and Boredom.

PubMed

Wang, Jia; Liu, Ru-De; Ding, Yi; Xu, Le; Liu, Ying; Zhen, Rui

2017-01-01

Previous studies have highlighted the impacts of environmental factors (teacher's autonomy support) and individual factors (self-efficacy, intrinsic value, and boredom) on academic engagement. This study aimed to investigate these variables and examine the relations among them. Three structural equation models tested the multiple mediational roles of self-efficacy, intrinsic value, and boredom in the relation between teacher's autonomy support and behavioral, emotional, and cognitive engagement, respectively, in math. A total of 637 Chinese middle school students (313 males, 324 females; mean age = 14.82) voluntarily participated in this study. Results revealed that self-efficacy, intrinsic value, and boredom played important and mediating roles between perceived teacher's autonomy support and student engagement. Specifically, these three individual variables partly mediated the relations between perceived teacher's autonomy support and behavioral and cognitive engagement, while fully mediating the relation between perceived teacher's autonomy support and emotional engagement. These findings complement and extend the understanding of factors affecting students' engagement in math.

US public perspectives on security

DOE Office of Scientific and Technical Information (OSTI.GOV)

Herron, Kerry Gale; Jenkins-Smith, Hank C.; Silva, Carol L.

2012-02-01

We report findings from a national Internet survey and a subset of questions administered by telephone in mid-2011 on public assessments of contemporary and emerging interstate nuclear threats, support for strategic arms control, and preferences for responding to limited nuclear attacks on the United States. Additionally, we analyze public views of the threat of terrorism, including cyber attacks, assessments of progress in the struggle against terrorism, and preferences for responding to an act of radiological terrorism against the United States. Also, we report findings from an Internet survey and a subset of questions administered by telephone among the American publicmore » in mid-2011 on US energy and environmental security. Key areas of investigation include public views on energy requirements, preferences for energy sources, energy conservation versus development, energy independence, implications of events at Fukushima, Japan, for US public support of nuclear generation, preferences for managing used nuclear fuel, and trust in nuclear risk assessments from government and other public sources. Where possible, findings from each survey are compared with previous surveys in this series for analyses of trends.« less

Social interactions, trust and risky alcohol consumption.

PubMed

Seid, Abdu Kedir

2016-12-01

The association of social capital and alcohol consumption is one of the most robust empirical findings in health economics of the past decade. However, the direction of the relationship between the two is heavily dependent on which dimension of social capital is studied and which alcohol measure is used. In this paper, we examine the effect of social interactions and generalised trust on drinking in the general Danish population survey. Participants (n = 2569) were recruited as part of a larger study. The double-hurdle model for the volume of alcohol consumption and the multivariate logistic model for heavy episodic drinking were estimated. We found evidence that social networking with male friends, membership in voluntary organisations, and generalised trust were significantly associated with the mean volume of alcohol consumption and heavy drinking. We also observed that social support at the community level had a buffering effect against heavy episodic drinking. The findings support previous findings in which social interactions and generalised trust were found to predict individuals' volume of drinking and heavy episodic drinking. However, the results varied across the indicators.

Examining the Influence of Ethnic/Racial Socialization on Aggressive Behaviors Among Juvenile Offenders

PubMed Central

Zapolski, Tamika C. B.; Garcia, Crystal A.; Jarjoura, G. Roger; Lau, Katherine S. L.; Aalsma, Matthew C.

2016-01-01

Risk assessment instruments are commonly used within the juvenile justice system to estimate a juvenile's likelihood of reoffending or engaging in aggressive or violent behavior. Although such instruments assess a broad range of factors, the influence of culture is often excluded. The current study examines the unique effect of ethnic/racial socialization on recent aggressive behaviors above and beyond three well-established risk and protective factors: delinquency history, moral disengagement, and social support. Participants were 95 juveniles who were either on probation or in detention centers in three Midwestern counties and who completed structured surveys related to personal experiences within and outside of the juvenile justice system. The findings provided partial support for our hypotheses: Consistent with previous findings, delinquency history and moral disengagement were significant predictors of recent aggressive behavior. Furthermore, when ethnic/racial socialization was added to the model, promotion of mistrust provided additional predictive validity for aggressive behavior above and beyond the other factors assessed. Based on these findings, the inclusion of education on culture may prove to be an important supplement to established intervention tools for juvenile offenders. PMID:27453798

Graphic support resources for workers with intellectual disability engaged in office tasks: a comparison with verbal instructions from a work mate.

PubMed

Becerra, María-Teresa; Montanero, Manuel; Lucero, Manuel

2018-02-01

Research into workplace adjustments for people with disabilities is a fundamental challenge of supported employment. The aim of the present work is to investigate the effect of several graphic resources as natural support for workers with intellectual disability. Two case studies were conducted to assess the performance of five workers engaged in office tasks, with three different support conditions. Results reveal a 20% increase in quality of performance of the tasks undertaken with graphic support as compared to support in which the participants received verbal instructions (VIs) from a work mate; and between 25 and 30% as compared to a control condition which included no help of any kind. These findings are consistent with previous studies which support the possibility of generating, at low cost, iconic materials (with maps or simple graphics), which progressively facilitate workers' autonomy, without dependence or help from the job trainer. We observed that the worst performance is in the support condition with VIs, this shows the limitations of this type of natural support, which is provided on demand by work mates without specialist knowledge of work support. Implications for Rehabilitation We studied the use of various types of natural support for people with intellectual disability in their workplace. The findings suggest that, with some brief training, the simple use in the workplace of graphic help on a card can increase between 20 and 30% the quality of performance of certain work tasks carried out by workers with intellectual disability. This advantage contrasts with the high cost or lower "manageability" of other material resources of natural support based on the use of technology.

Coping and caring: support resources integral to perioperative nurses during the process of organ procurement surgery.

PubMed

Smith, Zaneta; Leslie, Gavin; Wynaden, Dianne

2017-11-01

To discuss and explore the levels of support provided to perioperative nurses when participating in multi-organ procurement surgery and the impact to their overall well-being. Assisting within multi-organ procurement surgical procedures has been recognised to impact on the well-being of perioperative nurses leaving little opportunity for them to recover from their participation or to seek available support resources. To date, this area has remained largely unexplored with limited evidence of how nurses manage and cope with these procedures, in addition to the support received in the workplace. A qualitative grounded theory method. The study was informed by perioperative nurses (n = 35) who had previous participatory experience in these surgical procedures from two Australian states. Theoretical sampling directed the collection of data via semistructured in-depth interviews. Data were analysed using the constant comparative method. Three components of levels of support were identified from the data: lacking support within the operating room organisation; surgical team support and access to external professional support. These findings offer new insights into how nurses manage and cope with their participation in organ procurement surgical procedures and what types of support resources can be seen as barriers or enablers to their overall experiences. The need for timely and adequate support is vital to their overall well-being and future participation in organ procurement surgery. These findings have the potential to guide further research with implications for clinical initiatives and practices, looking at new ways of supporting perioperative nurses within the clinical environment both locally and internationally. Healthcare organisations need to acknowledge the emotional, psychosocial and psychological health and well-being of nurses impacted by these surgical procedures and provide appropriate and timely clinical support within the work environment. © 2016 John Wiley & Sons Ltd.

Factor structure of the Brief Negative Symptom Scale.

PubMed

Strauss, Gregory P; Hong, L Elliot; Gold, James M; Buchanan, Robert W; McMahon, Robert P; Keller, William R; Fischer, Bernard A; Catalano, Lauren T; Culbreth, Adam J; Carpenter, William T; Kirkpatrick, Brian

2012-12-01

The current study examined the factor structure of the Brief Negative Symptom Scale (BNSS), a next-generation negative symptom rating instrument developed in response to the NIMH-sponsored Consensus Development Conference on Negative Symptoms. Participants included 146 individuals with a DSM-IV diagnosis of schizophrenia or schizoaffective disorder. Principal axis factoring indicated two distinct factors explaining 68.7% of the variance. Similar to previous findings, the factors reflected motivation and pleasure and emotional expressivity. These findings provide further support for the construct validity of the BNSS, and for the existence of these two negative symptom factors. Copyright © 2012 Elsevier B.V. All rights reserved.

A review of ride comfort studies in the United Kingdom

NASA Technical Reports Server (NTRS)

Griffin, M. J.

1975-01-01

United Kingdom research which is relevant to the assessment of vehicle ride comfort was reviewed. The findings reported in approximately 80 research papers are outlined, and an index to the areas of application of these studies is provided. The data obtained by different research groups are compared, and it is concluded that, while there are some areas of general agreement, the findings obtained from previous United Kingdom research are insufficient to define a general purpose ride comfort evaluation procedure. The degree to which United Kingdom research supports the vibration evaluation procedure defined in the current International Standard on the evaluation of human exposure to whole-body vibration is discussed.

Coping strategy and social support modify the association between perceived stress and C-reactive protein: a longitudinal study of healthy men and women.

PubMed

Shimanoe, Chisato; Hara, Megumi; Nishida, Yuichiro; Nanri, Hinako; Otsuka, Yasuko; Horita, Mikako; Yasukata, Jun; Miyoshi, Nobuyuki; Yamada, Yosuke; Higaki, Yasuki; Tanaka, Keitaro

2018-05-01

Inconsistent associations have been reported between perceived stress and C-reactive protein (CRP), a marker of systemic inflammation. We previously observed a male-specific inverse relationship between perceived stress and CRP in a cross-sectional study. In the present study, we examined the longitudinal association between changes in perceived stress and CRP, and further analyzed whether changes in coping strategies and social support modify this association. This study included 8454 participants in both a baseline survey and a follow-up survey 5 years later. Psychosocial measures (i.e. perceived stress, coping strategies, and social support) and CRP concentrations were measured by identical means in both surveys. Consistent with our previous findings, increased perceived stress was significantly associated with lower CRP in men (p trend  = .037), but not in women. Increased "emotional expression," a coping strategy, was also associated with lower CRP in women (p trend  = .024). Furthermore, interactions between perceived stress and a coping strategy (positive reappraisal) or social support on CRP were found in men (p interaction  = .007 and .038, respectively); the above inverse association between stress and CRP was not detected for participants with diminished positive reappraisal or social support. In conclusion, increases in perceived stress during a 5-year period were associated with decreases in CRP among healthy men, and the observed association was possibly modified by coping strategy or social support.

Nonconventional Remission of Miliaria rubra during Heat Acclimation: Case Report,

DTIC Science & Technology

1987-01-01

folliculitis , furunculosis, or anhidrotic heat exhaustion (1,2). Severe cases involve diurnal irritation, discomfort and isamnia to a degree that causes a...L/hr) in the heat. A skin biopsy (right scapula) on day 8 was negative for miliaria rubra but was positive for chronic folliculitis , which was...sparsely distributed over the skin. This finding supported previous reports that miliaria rubra may be a precursor of folliculitis (1,2). Daily entering

DNA Damage and Oxidative Stress in Dyskeratosis Congenita: Analysis of Pathways and Therapeutic Stategies Using CPISPR and iPSC Model Systems

DTIC Science & Technology

2016-06-01

telomeres and characterized by a classical clinical triad of leukoplakia, skin dyspigmentation and nail dystrophy with concomitant marrow failure...DC symptomology, to a degree, corresponds to critically shortened telomeres that limits cellular replicative potential and thus prematurely exhausts...stem cell pools. Our previous findings support a hypothesis whereby shortened telomeres increase DNA damage responses within the cell leading to

Remembering Left–Right Orientation of Pictures

PubMed Central

Bartlett, James C.; Gernsbacher, Morton Ann; Till, Robert E.

2015-01-01

In a study of recognition memory for pictures, we observed an asymmetry in classifying test items as “same” versus “different” in left–right orientation: Identical copies of previously viewed items were classified more accurately than left–right reversals of those items. Response bias could not explain this asymmetry, and, moreover, correct “same” and “different” classifications were independently manipulable: Whereas repetition of input pictures (one vs. two presentations) affected primarily correct “same” classifications, retention interval (3 hr vs. 1 week) affected primarily correct “different” classifications. In addition, repetition but not retention interval affected judgments that previously seen pictures (both identical and reversed) were “old”. These and additional findings supported a dual-process hypothesis that links “same” classifications to high familiarity, and “different” classifications to conscious sampling of images of previously viewed pictures. PMID:2949051

Social support influences preferences for feminine facial cues in potential social partners.

PubMed

Watkins, Christopher D; DeBruine, Lisa M; Little, Anthony C; Jones, Benedict C

2012-01-01

Most previous studies of individual differences in women's and men's preferences for sexually dimorphic physical characteristics have focused on the importance of mating-related factors for judgments of opposite-sex individuals. Although studies have suggested that people may show stronger preferences for feminine individuals of both sexes under conditions where social support may be at a premium (e.g., during phases of the menstrual cycle where raised progesterone prepares women's bodies for pregnancy), these studies have not demonstrated that perceptions of available social support directly influence femininity preferences. Here we found that (1) women and men randomly allocated to low social support priming conditions demonstrated stronger preferences for feminine shape cues in own- and opposite-sex faces than did individuals randomly allocated to high social support priming conditions and (2) that people perceived men and women displaying feminine characteristics as more likely to provide them with high-quality social support than those displaying relatively masculine characteristics. Together, these findings suggest that social support influences face preferences directly, potentially implicating facultative responses whereby people increase their preferences for pro-social individuals under conditions of low social support.

The role of motivation in understanding social contextual influences on physical activity in underserved adolescents in the ACT Trial: a cross-sectional study.

PubMed

Lawman, Hannah G; Wilson, Dawn K; Van Horn, M Lee; Zarrett, Nicole

2012-12-01

Previous research has shown that social contextual factors are important in understanding physical activity (PA) behavior, although little is known about how these factors may relate to PA, especially in underserved adolescents (low income, minorities). This study examined how motivation may differentially mediate the relationship of two social contextual variables (i.e., peer and parent social support) and moderate-to-vigorous PA (MVPA). Baseline data (n = 1421 sixth graders, 54% female, 72% African American) from the Active by Choice Today (ACT) trial in underserved adolescents were analyzed. Motivation was examined as a mediator of the relationships between peer social support, parent social support, and MVPA (measured by 7-day accelerometer estimates). Motivation and peer but not parent support were significantly related to MVPA overall. Significant mediation effects were found indicating motivation partially mediated the relation between peer social support and MVPA and to a lesser degree parent support and MVPA. These findings provide support for the importance of social contextual influences, especially peer social support, on underserved adolescents' PA and motivation for PA.

Methamphetamine use can mimic testicular torsion.

PubMed

Doherty, Michael H; Gerscovich, Eugenio O; Corwin, Michael T; Wilkendorf, Stephen R

2013-09-01

We report the case of a patient presenting with the classic clinical appearance of testicular torsion. Ultrasound showed testicular ischemia supporting the clinical diagnosis, but the lack of visualization of spermatic cord torsion was of concern. An attempt of clinical detorsion was considered unsuccessful and the patient was explored. No torsion was found. On postoperative review of the patient's medical history, we found methamphetamine use, with a positive urine test at the time of his emergent consultation for the scrotal pain episode. The use of amphetamines has been previously reported as the cause of ischemia of multiple organs, but we could not find previous reports of involvement of the testis mimicking torsion. Copyright © 2013 Wiley Periodicals, Inc.

Spatializing Emotion: No Evidence for a Domain-General Magnitude System.

PubMed

Pitt, Benjamin; Casasanto, Daniel

2017-11-22

People implicitly associate different emotions with different locations in left-right space. Which aspects of emotion do they spatialize, and why? Across many studies people spatialize emotional valence, mapping positive emotions onto their dominant side of space and negative emotions onto their non-dominant side, consistent with theories of metaphorical mental representation. Yet other results suggest a conflicting mapping of emotional intensity (a.k.a., emotional magnitude), according to which people associate more intense emotions with the right and less intense emotions with the left - regardless of their valence; this pattern has been interpreted as support for a domain-general system for representing magnitudes. To resolve the apparent contradiction between these mappings, we first tested whether people implicitly map either valence or intensity onto left-right space, depending on which dimension of emotion they attend to (Experiments 1a, b). When asked to judge emotional valence, participants showed the predicted valence mapping. However, when asked to judge emotional intensity, participants showed no systematic intensity mapping. We then tested an alternative explanation of findings previously interpreted as evidence for an intensity mapping (Experiments 2a, b). These results suggest that previous findings may reflect a left-right mapping of spatial magnitude (i.e., the size of a salient feature of the stimuli) rather than emotion. People implicitly spatialize emotional valence, but, at present, there is no clear evidence for an implicit lateral mapping of emotional intensity. These findings support metaphor theory and challenge the proposal that mental magnitudes are represented by a domain-general metric that extends to the domain of emotion. Copyright © 2017 Cognitive Science Society, Inc.

On the value-dependence of value-driven attentional capture.

PubMed

Anderson, Brian A; Halpern, Madeline

2017-05-01

Findings from an increasingly large number of studies have been used to argue that attentional capture can be dependent on the learned value of a stimulus, or value-driven. However, under certain circumstances attention can be biased to select stimuli that previously served as targets, independent of reward history. Value-driven attentional capture, as studied using the training phase-test phase design introduced by Anderson and colleagues, is widely presumed to reflect the combined influence of learned value and selection history. However, the degree to which attentional capture is at all dependent on value learning in this paradigm has recently been questioned. Support for value-dependence can be provided through one of two means: (1) greater attentional capture by prior targets following rewarded training than following unrewarded training, and (2) greater attentional capture by prior targets previously associated with high compared to low value. Using a variant of the original value-driven attentional capture paradigm, Sha and Jiang (Attention, Perception, and Psychophysics, 78, 403-414, 2016) failed to find evidence of either, and raised criticisms regarding the adequacy of evidence provided by prior studies using this particular paradigm. To address this disparity, here we provided a stringent test of the value-dependence hypothesis using the traditional value-driven attentional capture paradigm. With a sufficiently large sample size, value-dependence was observed based on both criteria, with no evidence of attentional capture without rewards during training. Our findings support the validity of the traditional value-driven attentional capture paradigm in measuring what its name purports to measure.

Neuroanatomical details of the lateral neurons of Drosophila melanogaster support their functional role in the circadian system

PubMed Central

Schubert, Frank K.; Hagedorn, Nicolas; Yoshii, Taishi; Helfrich‐Förster, Charlotte

2018-01-01

Abstract Drosophila melanogaster is a long‐standing model organism in the circadian clock research. A major advantage is the relative small number of about 150 neurons, which built the circadian clock in Drosophila. In our recent work, we focused on the neuroanatomical properties of the lateral neurons of the clock network. By applying the multicolor‐labeling technique Flybow we were able to identify the anatomical similarity of the previously described E2 subunit of the evening oscillator of the clock, which is built by the 5th small ventrolateral neuron (5th s‐LNv) and one ITP positive dorsolateral neuron (LNd). These two clock neurons share the same spatial and functional properties. We found both neurons innervating the same brain areas with similar pre‐ and postsynaptic sites in the brain. Here the anatomical findings support their shared function as a main evening oscillator in the clock network like also found in previous studies. A second quite surprising finding addresses the large lateral ventral PDF‐neurons (l‐LNvs). We could show that the four hardly distinguishable l‐LNvs consist of two subgroups with different innervation patterns. While three of the neurons reflect the well‐known branching pattern reproduced by PDF immunohistochemistry, one neuron per brain hemisphere has a distinguished innervation profile and is restricted only to the proximal part of the medulla‐surface. We named this neuron “extra” l‐LNv (l‐LNvx). We suggest the anatomical findings reflect different functional properties of the two l‐LNv subgroups. PMID:29424420

Invited Commentary: Indoor Tanning-A Melanoma Accelerator?

PubMed

Berwick, Marianne; Doré, Jean-François

2017-02-01

In this issue of the Journal, Ghiasvand et al. (Am J Epidemiol. 2017;185(3):147-156) present results from a longitudinal study of the association between indoor tanning and melanoma in a large cohort of Norwegian women. These new data further support previous findings on the damaging effects of tanning bed exposure on women, particularly young women. The authors present compelling evidence that early exposure to tanning beds advances the date of diagnosis of melanoma by at least 2 years. With a strong design and a large cohort followed for a mean of 13.7 years, this study lends additional support to previous evidence of the negative effects of tanning beds and provides further justification for stronger policy initiatives designed to reduce tanning bed use among young women. © The Author 2016. Published by Oxford University Press on behalf of the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

New graduate RN work satisfaction after completing an interactive nurse residency.

PubMed

Anderson, Teresa; Linden, Lois; Allen, Marsha; Gibbs, Elizabeth

2009-04-01

The aims of this study were to measure job satisfaction and engagement perceptions of new nurses after completing interactive residency modules and to test the reliability and validity of the Halfer-Graf Job/Work Environment Nursing Satisfaction Survey. US nursing shortages are estimated to increase to 36% by 2020, requiring emphasis on hiring new graduate nurses. Improved retention of new graduates through innovative orientations such as interactive nurse residencies is one option. This mixed qualitative and quantitative study compared perceived job satisfaction and employee engagement of 90 new graduate nurses completing an interactive nurse residency. Reliability and validity of the Halfer-Graf tool were supported. Qualitative analysis yielded trends related to satisfiers (patients, patient outcomes, and teamwork) and dissatisfiers (staffing/scheduling, lack of teamwork, and physician disrespect). Simulation scenarios, debriefing, and e-mail communication with peers ranked high as beneficial teaching strategies. Study findings support previous research. An interactive learning environment was perceived as beneficial. First and second year nurse retention was consistent with previous residency programming.

[A quantitative analysis of information-seeking behaviors regarding medical institutions with Spanish language support among South American Spanish-speaking migrants in Aichi Prefecture, Japan].

PubMed

Takaku, Michiko; Ichikawa, Seiichi; Kaneko, Noriyo

2015-01-01

This study aimed to explore the factors associated with information-seeking behaviors regarding medical institutions with Spanish language support among South American Spanish-speaking migrants living in Aichi Prefecture, Japan. The survey targeted South American Spanish-speaking migrants aged 18 years and older currently residing in Aichi Prefecture who had lived in Japan for at least three months and who had previously seen a doctor in Japan. The questionnaire was written in Spanish and the survey was conducted from April to July, 2010. Wilson's information behavior model was used to study information-seeking behavior regarding medical institutions with Spanish language support among 245 respondents who completed the questionnaires (response rate: 58.9%). Experience seeking medical institutions with Spanish language support in the Tokai area was set as the dependent variable and a chi-square test was conducted to examine relationships with language support needs, recognition of and access to medical institutions with Spanish language support, living situation in Japan, and Japanese language skills. Among the 245 respondents, 106 were male (43.3%) and 139 were female (56.7%). The average age was 39.6±11.2 years old and 84.5% were Peruvian. The average length of residency in Japan was 11.0±5.7 years, and 34.3% of respondents had lived in Aichi for 5-9 years. A total of 165 respondents (67.3%) had searched for medical institutions with Spanish language support, while 80 (32.7%) had not. Information-seeking behavior regarding medical institutions with Spanish language support was associated with having previously experienced a need for Spanish language support when seeing doctors in Japan, finding and attending medical institutions with Spanish language support in the Tokai area, length of residency in Japan, Japanese language skills, and the language used in daily life. Experience in requiring Spanish support when sick or injured in Japan motivated respondents to seek medical institutions with Spanish language support. Communication difficulties in Japanese, speaking Spanish in daily life, and length of residency in Japan were relevant factors in their information-seeking behaviors. Respondents were likely to obtain information from family, friends, co-workers, and Spanish media, but not from public institutions that distribute Spanish material. Finding an effective way to disseminate health-related information was a fundamental health issue for South American Spanish-speaking migrants.

Perceived demands during modern military operations.

PubMed

Boermans, Sylvie M; Kamphuis, Wim; Kamhuis, Wim; Delahaij, Roos; Korteling, J E Hans; Euwema, Martin C

2013-07-01

Using a cross-sectional design, this study explored operational demands during the International Security Assistance Force for Afghanistan (2009-2010) across distinct military units. A total of 1,413 Dutch soldiers, nested within four types of units (i.e., combat, combat support, service support, and command support units) filled out a 23-item self-survey in which they were asked to evaluate the extent to which they experienced operational characteristics as demanding. Exploratory factor analysis identified six underlying dimensions of demands. Multivariate analysis of variance revealed that distinct units are characterized by their own unique constellation of perceived demands, even after controlling for previous deployment experience. Most notable findings were found when comparing combat units to other types of units. These insights can be used to better prepare different types of military units for deployment, and support them in the specific demands they face during deployment. Reprint & Copyright © 2013 Association of Military Surgeons of the U.S.

Religiousness, social support and subjective well-being: An exploratory study among adolescents in an Asian atheist country.

PubMed

Ju, Chengting; Zhang, Baoshan; You, Xuqun; Alterman, Valeria; Li, Yongkang

2018-04-01

Few studies have focused on the relationships among religiousness, social support and subjective well-being in Chinese adolescent populations. This study tries to fill this gap. Using cluster sampling, we selected two groups: Group A, which included 738 Tibetan adolescents with a formal religious affiliation and represented adolescents from a religious culture, and Group B, which included 720 Han adolescents without a religious affiliation and represented adolescents from an irreligious culture. Structural equation modelling showed that only in Group A did social support mediate (partially) the relationship between religious experience and subjective well-being; furthermore, the results of a hierarchical regression analysis showed that only in Group A did social support moderate the relationship between religious ideology and subjective well-being. Possible explanations for the discrepancies between the findings obtained in this study and those obtained in previous studies are discussed. © 2016 International Union of Psychological Science.

A new model in achieving Green Accounting at hotels in Bali

NASA Astrophysics Data System (ADS)

Astawa, I. P.; Ardina, C.; Yasa, I. M. S.; Parnata, I. K.

2018-01-01

The concept of green accounting becomes a debate in terms of its implementation in a company. The result of previous studies indicates that there are no standard model regarding its implementation to support performance. The research aims to create a different green accounting model to other models by using local cultural elements as the variables in building it. The research is conducted in two steps. The first step is designing the model based on theoretical studies by considering the main and supporting elements in building the concept of green accounting. The second step is conducting a model test at 60 five stars hotels started with data collection through questionnaire and followed by data processing using descriptive statistic. The result indicates that the hotels’ owner has implemented green accounting attributes and it supports previous studies. Another result, which is a new finding, shows that the presence of local culture, government regulation, and the awareness of hotels’ owner has important role in the development of green accounting concept. The results of the research give contribution to accounting science in terms of green reporting. The hotel management should adopt local culture in building the character of accountant hired in the accounting department.

Probabilistic representation in syllogistic reasoning: A theory to integrate mental models and heuristics.

PubMed

Hattori, Masasi

2016-12-01

This paper presents a new theory of syllogistic reasoning. The proposed model assumes there are probabilistic representations of given signature situations. Instead of conducting an exhaustive search, the model constructs an individual-based "logical" mental representation that expresses the most probable state of affairs, and derives a necessary conclusion that is not inconsistent with the model using heuristics based on informativeness. The model is a unification of previous influential models. Its descriptive validity has been evaluated against existing empirical data and two new experiments, and by qualitative analyses based on previous empirical findings, all of which supported the theory. The model's behavior is also consistent with findings in other areas, including working memory capacity. The results indicate that people assume the probabilities of all target events mentioned in a syllogism to be almost equal, which suggests links between syllogistic reasoning and other areas of cognition. Copyright © 2016 The Author(s). Published by Elsevier B.V. All rights reserved.

Rational action selection in 1½- to 3-year-olds following an extended training experience.

PubMed

Klossek, Ulrike M H; Dickinson, Anthony

2012-02-01

Previous studies failed to find evidence for rational action selection in children under 2 years of age. The current study investigated whether younger children required more training to encode the relevant causal relationships. Children between 1½ and 3 years of age were trained over two sessions to perform actions on a touch-sensitive screen to obtain video clips as outcomes. Subsequently, a visual habituation procedure was employed to devalue one of the training outcomes. As in previous studies, 2- and 3-year-olds chose actions associated with an expected valued outcome significantly more often during a subsequent choice test. Moreover, analysis of children's first responses in the post-devaluation test revealed evidence of rational action selection even in the youngest age group (18-23 months). Consistent with dual-process accounts of action control, the findings support the view that the ability to make rational action choices develops gradually. 2011 Elsevier Inc. All rights reserved.

New Halo Stars of the Galactic Globular Clusters M3 and M13 in the LAMOST DR1 Catalog

NASA Astrophysics Data System (ADS)

Navin, Colin A.; Martell, Sarah L.; Zucker, Daniel B.

2016-10-01

M3 and M13 are Galactic globular clusters with previous reports of surrounding stellar halos. We present the results of a search for members and extratidal cluster halo stars within and outside of the tidal radius of these clusters in the LAMOST Data Release 1. We find seven candidate cluster members (inside the tidal radius) of both M3 and M13, respectively. In M3 we also identify eight candidate extratidal cluster halo stars at distances up to ˜9.8 times the tidal radius, and in M13 we identify 12 candidate extratidal cluster halo stars at distances up to ˜13.8 times the tidal radius. These results support previous indications that both M3 and M13 are surrounded by extended stellar halos, and we find that the GC destruction rates corresponding to the observed mass loss are generally significantly higher than theoretical studies predict.

Impact of compressibility and a guide field on Fermi acceleration during magnetic island coalescence

NASA Astrophysics Data System (ADS)

Montag, Peter; Egedal, Jan; Lichko, Emily; Wetherton, Blake

2017-10-01

Previous work has shown that Fermi acceleration can be an effective heating mechanism during magnetic island coalescence, where electrons may undergo repeated reflections as the magnetic field lines contract. This energization has the potential to account for the power-law distributions of particle energy inferred from observations of solar flares. Here, we develop a generalized framework for the analysis of Fermi acceleration that can incorporate the effects of compressibility and non-uniformity along field lines, which have commonly been neglected in previous treatments of the problem. Applying this framework to the simplified case of the uniform flux tube allows us to find both the power-law scaling of the distribution function and the rate at which the power-law behavior develops. We find that a guide magnetic field of order unity effectively suppresses the development of power-law distributions. The work was supported by NASA Grant No. NNX14AC68G, NSF GEM Grant No. 1405166, NSF Award 1404166, and NASA Award NNX15AJ73G.

Meson properties in asymmetric matter

NASA Astrophysics Data System (ADS)

Mammarella, Andrea; Mannarelli, Massimo

2018-03-01

In this work we study dynamic and thermodynamic (at T = 0) properties of mesons in asymmetric matter in the framework of Chiral Perturbation Theory. We consider a system at vanishing temperature with nonzero isospin chemical potential and strangeness chemical potential; meson masses and mixing in the normal phase, the pion condensation phase and the kaon condensation phase are described. We find differences with previous works, but the results presented here are supported by both theory group analysis and by direct calculations. Some pion decay channels in the normal and the pion condensation phases are studied, finding a nonmonotonic behavior of the decay width as a function of µ I . Furthermore, pressure, density and equation of state of the system at T = 0 are studied, finding remarkable agreement with analogue studies performed by lattice calculations.

How Cancer Survivors Provide Support on Cancer-Related Internet Mailing Lists

PubMed Central

Lyons, Elizabeth J; Frydman, Gilles; Forlenza, Michael; Rimer, Barbara K

2007-01-01

Background Internet mailing lists are an important and increasingly common way for cancer survivors to find information and support. Most studies of these mailing lists have investigated lists dedicated to one type of cancer, most often breast cancer. Little is known about whether the lessons learned from experiences with breast cancer lists apply to other cancers. Objectives The aim of the study was to compare the structural characteristics of 10 Internet cancer-related mailing lists and identify the processes by which cancer survivors provide support. Methods We studied a systematic 9% sample of email messages sent over five months to 10 cancer mailing lists hosted by the Association of Cancer Online Resources (ACOR). Content analyses were used to compare the structural characteristics of the lists, including participation rates and members’ identities as survivors or caregivers. We used thematic analyses to examine the types of support that list members provided through their message texts. Results Content analyses showed that characteristics of list members and subscriber participation rates varied across the lists. Thematic analyses revealed very little “off topic” discussion. Feedback from listowners indicated that they actively modeled appropriate communication on their lists and worked to keep discussions civil and focused. In all lists, members offered support much more frequently than they requested it; survivors were somewhat more likely than caregivers to offer rather than to ask for support. The most common topics in survivors’ messages were about treatment information and how to communicate with health care providers. Although expressions of emotional support were less common than informational support, they appeared in all lists. Many messages that contained narratives of illness or treatment did not specifically ask for help but provided emotional support by reassuring listmates that they were not alone in their struggles with cancer. Survivors’ explicit expressions of emotional support tended to be messages that encouraged active coping. Such messages also provided senders with opportunities to assume personally empowering “helper” roles that supported self-esteem. Conclusions Many cancer survivors use the Internet to seek informational and emotional support. Across 10 lists for different cancers, informational support was the main communication style. Our finding of an emphasis on informational support is in contrast to most prior literature, which has focused on emotional support. We found the most common expressions of support were offers of technical information and explicit advice about how to communicate with health care providers. Topics and proportions of informational and emotional support differed across the lists. Our previous surveys of ACOR subscribers showed that they join the lists primarily to seek information; this qualitative study shows that they can and do find what they seek. They also find opportunities to play rewarding roles as support givers. PMID:17513283

Changes in Church-Based Social Support Relationships During Older Adulthood

PubMed Central

2013-01-01

Objectives. To track the course of age-related changes in emotional and tangible support given and received by older adults in the context of their religious congregations. Method. Hierarchical linear modeling was applied to data from a national sample of 1,192 White and African American older adults who attended church regularly, and they were interviewed up to four times over a period of seven years. Results. Changes were found in six measures of support. Participants increased in terms of the amount of emotional support that they both gave and received, whereas decreased in the amount of tangible support they gave and received. Satisfaction increased with age for both emotional and tangible support. There were large race-related differences, with African Americans being more engaged in support relationships of all types. Religious factors, including frequency of attendance, commitment, and the congregational cohesiveness were strong predictors of between-person differences. Discussion. This study is the first to demonstrate within-person change in church-based support relationships during the course of older adulthood. Patterns of increasing quantity and quality of emotional ties, but decreasing tangible support, partially contrast with previous findings regarding secular support networks but are consistent with the socioemotional selectivity perspective. PMID:23149429

An Inductive Logic Programming Approach to Validate Hexose Binding Biochemical Knowledge.

PubMed

Nassif, Houssam; Al-Ali, Hassan; Khuri, Sawsan; Keirouz, Walid; Page, David

2010-01-01

Hexoses are simple sugars that play a key role in many cellular pathways, and in the regulation of development and disease mechanisms. Current protein-sugar computational models are based, at least partially, on prior biochemical findings and knowledge. They incorporate different parts of these findings in predictive black-box models. We investigate the empirical support for biochemical findings by comparing Inductive Logic Programming (ILP) induced rules to actual biochemical results. We mine the Protein Data Bank for a representative data set of hexose binding sites, non-hexose binding sites and surface grooves. We build an ILP model of hexose-binding sites and evaluate our results against several baseline machine learning classifiers. Our method achieves an accuracy similar to that of other black-box classifiers while providing insight into the discriminating process. In addition, it confirms wet-lab findings and reveals a previously unreported Trp-Glu amino acids dependency.

Expected time-invariant effects of biological traits on mammal species duration.

PubMed

Smits, Peter D

2015-10-20

Determining which biological traits influence differences in extinction risk is vital for understanding the differential diversification of life and for making predictions about species' vulnerability to anthropogenic impacts. Here I present a hierarchical Bayesian survival model of North American Cenozoic mammal species durations in relation to species-level ecological factors, time of origination, and phylogenetic relationships. I find support for the survival of the unspecialized as a time-invariant generalization of trait-based extinction risk. Furthermore, I find that phylogenetic and temporal effects are both substantial factors associated with differences in species durations. Finally, I find that the estimated effects of these factors are partially incongruous with how these factors are correlated with extinction risk of the extant species. These findings parallel previous observations that background extinction is a poor predictor of mass extinction events and suggest that attention should be focused on mass extinctions to gain insight into modern species loss.

Familial chondrocalcinosis in the Spanish population.

PubMed

Fernandez Dapica, M P; Gómez-Reino, J J

1986-06-01

We have found in our clinic a 28.1% prevalence of familial chondrocalcinosis among 149 family members of 32 patients with calcium pyrophosphate dihydrate deposition disease. The clinical and radiological characteristics of these familial chondrocalcinosis patients were similar to those of the Chiloes with familial chondrocalcinosis previously reported. No significant clinical or radiological differences were detected between our sporadic and familial chondrocalcinosis patients. Our findings support the hypothesis that the Chiloes familial chondrocalcinosis was carried to Chile by Spanish immigrants.

Captive chimpanzees' manual laterality in tool use context: Influence of communication and of sociodemographic factors.

PubMed

Prieur, Jacques; Pika, Simone; Blois-Heulin, Catherine; Barbu, Stéphanie

2018-04-14

Understanding variations of apes' laterality between activities is a central issue when investigating the evolutionary origins of human hemispheric specialization of manual functions and language. We assessed laterality of 39 chimpanzees in a non-communication action similar to termite fishing that we compared with data on five frequent conspecific-directed gestures involving a tool previously exploited in the same subjects. We evaluated, first, population-level manual laterality for tool-use in non-communication actions; second, the influence of sociodemographic factors (age, sex, group, and hierarchy) on manual laterality in both non-communication actions and gestures. No significant right-hand bias at the population level was found for non-communication tool use, contrary to our previous findings for gestures involving a tool. A multifactorial analysis revealed that hierarchy and age particularly modulated manual laterality. Dominants and immatures were more right-handed when using a tool in gestures than in non-communication actions. On the contrary, subordinates, adolescents, young and mature adults as well as males were more right-handed when using a tool in non-communication actions than in gestures. Our findings support the hypothesis that some primate species may have a specific left-hemisphere processing gestures distinct from the cerebral system processing non-communication manual actions and to partly support the tool use hypothesis. Copyright © 2018 Elsevier B.V. All rights reserved.

Tensile strength of 67P/Churyumov-Gerasimenko nucleus material from overhangs

NASA Astrophysics Data System (ADS)

Attree, N.; Groussin, O.; Jorda, L.; Nébouy, D.; Thomas, N.; Brouet, Y.; Kührt, E.; Preusker, F.; Scholten, F.; Knollenberg, J.; Hartogh, P.; Sierks, H.; Barbieri, C.; Lamy, P.; Rodrigo, R.; Koschny, D.; Rickman, H.; Keller, H. U.; A'Hearn, M. F.; Auger, A.-T.; Barucci, M. A.; Bertaux, J.-L.; Bertini, I.; Bodewits, D.; Boudreault, S.; Cremonese, G.; Da Deppo, V.; Davidsson, B.; Debei, S.; De Cecco, M.; Deller, J.; El-Maarry, M. R.; Fornasier, S.; Fulle, M.; Gutiérrez, P. J.; Güttler, C.; Hviid, S.; Ip, W.-H.; Kovacs, G.; Kramm, J. R.; Küppers, M.; Lara, L. M.; Lazzarin, M.; Lopez Moreno, J. J.; Lowry, S.; Marchi, S.; Marzari, F.; Mottola, S.; Naletto, G.; Oklay, N.; Pajola, M.; Toth, I.; Tubiana, C.; Vincent, J.-B.; Shi, X.

2018-03-01

We directly measured twenty overhanging cliffs on the surface of comet 67P/Churyumov-Gerasimenko extracted from the latest shape model and estimated the minimum tensile strengths needed to support them against collapse under the comet's gravity. We find extremely low strengths of around 1 Pa or less (1 to 5 Pa, when scaled to a metre length). The presence of eroded material at the base of most overhangs, as well as the observed collapse of two features andthe implied previous collapse of another, suggests that they are prone to failure and that the true material strengths are close to these lower limits (although we only consider static stresses and not dynamic stress from, for example, cometary activity). Thus, a tensile strength of a few pascals is a good approximation for the tensile strength of the 67P nucleus material, which is in agreement with previous work. We find no particular trends in overhang properties either with size over the 10-100 m range studied here or location on the nucleus. There are no obvious differences, in terms of strength, height or evidence of collapse, between the populations of overhangs on the two cometary lobes, suggesting that 67P is relatively homogenous in terms of tensile strength. Low material strengths are supportive of cometary formation as a primordial rubble pile or by collisional fragmentation of a small body (tens of km).

Comprehensive Longitudinal Study Challenges the Existence of Neonatal Imitation in Humans.

PubMed

Oostenbroek, Janine; Suddendorf, Thomas; Nielsen, Mark; Redshaw, Jonathan; Kennedy-Costantini, Siobhan; Davis, Jacqueline; Clark, Sally; Slaughter, Virginia

2016-05-23

Human children copy others' actions with high fidelity, supporting early cultural learning and assisting in the development and maintenance of behavioral traditions [1]. Imitation has long been assumed to occur from birth [2-4], with influential theories (e.g., [5-7]) placing an innate imitation module at the foundation of social cognition (potentially underpinned by a mirror neuron system [8, 9]). Yet, the very phenomenon of neonatal imitation has remained controversial. Empirical support is mixed and interpretations are varied [10-16], potentially because previous investigations have relied heavily on cross-sectional designs with relatively small samples and with limited controls [17, 18]. Here, we report surprising results from the most comprehensive longitudinal study of neonatal imitation to date. We presented infants (n = 106) with nine social and two non-social models and scored their responses at 1, 3, 6, and 9 weeks of age. Longitudinal analyses indicated that the infants did not imitate any of the models, as they were just as likely to produce the gestures in response to control models as they were to matching models. Previous positive findings were replicated in limited cross-sections of the data, but the overall analyses confirmed these findings to be mere artifacts of restricted comparison conditions. Our results undermine the idea of an innate imitation module and suggest that earlier studies reporting neonatal imitation were methodologically limited. Copyright © 2016 Elsevier Ltd. All rights reserved.

Olfactory discrimination predicts cognitive decline among community-dwelling older adults

PubMed Central

Sohrabi, H R; Bates, K A; Weinborn, M G; Johnston, A N B; Bahramian, A; Taddei, K; Laws, S M; Rodrigues, M; Morici, M; Howard, M; Martins, G; Mackay-Sim, A; Gandy, S E; Martins, R N

2012-01-01

The presence of olfactory dysfunction in individuals at higher risk of Alzheimer's disease has significant diagnostic and screening implications for preventive and ameliorative drug trials. Olfactory threshold, discrimination and identification can be reliably recorded in the early stages of neurodegenerative diseases. The current study has examined the ability of various olfactory functions in predicting cognitive decline in a community-dwelling sample. A group of 308 participants, aged 46–86 years old, were recruited for this study. After 3 years of follow-up, participants were divided into cognitively declined and non-declined groups based on their performance on a neuropsychological battery. Assessment of olfactory functions using the Sniffin' Sticks battery indicated that, contrary to previous findings, olfactory discrimination, but not olfactory identification, significantly predicted subsequent cognitive decline (odds ratio=0.869; P<0.05; 95% confidence interval=0.764−0.988). The current study findings confirm previously reported associations between olfactory and cognitive functions, and indicate that impairment in olfactory discrimination can predict future cognitive decline. These findings further our current understanding of the association between cognition and olfaction, and support olfactory assessment in screening those at higher risk of dementia. PMID:22832962

Olfactory discrimination predicts cognitive decline among community-dwelling older adults.

PubMed

Sohrabi, H R; Bates, K A; Weinborn, M G; Johnston, A N B; Bahramian, A; Taddei, K; Laws, S M; Rodrigues, M; Morici, M; Howard, M; Martins, G; Mackay-Sim, A; Gandy, S E; Martins, R N

2012-05-22

The presence of olfactory dysfunction in individuals at higher risk of Alzheimer's disease has significant diagnostic and screening implications for preventive and ameliorative drug trials. Olfactory threshold, discrimination and identification can be reliably recorded in the early stages of neurodegenerative diseases. The current study has examined the ability of various olfactory functions in predicting cognitive decline in a community-dwelling sample. A group of 308 participants, aged 46-86 years old, were recruited for this study. After 3 years of follow-up, participants were divided into cognitively declined and non-declined groups based on their performance on a neuropsychological battery. Assessment of olfactory functions using the Sniffin' Sticks battery indicated that, contrary to previous findings, olfactory discrimination, but not olfactory identification, significantly predicted subsequent cognitive decline (odds ratio = 0.869; P<0.05; 95% confidence interval = 0.764-0.988). The current study findings confirm previously reported associations between olfactory and cognitive functions, and indicate that impairment in olfactory discrimination can predict future cognitive decline. These findings further our current understanding of the association between cognition and olfaction, and support olfactory assessment in screening those at higher risk of dementia.

Natural resource collection and desired family size: a longitudinal test of environment-population theories.

PubMed

Brauner-Otto, Sarah R; Axinn, William G

2017-06-01

Theories relating the changing environment to human fertility predict declining natural resources may actually increase the demand for children. Unfortunately most previous empirical studies have been limited to cross-sectional designs that limit our ability to understand links between processes that change over time. We take advantage of longitudinal measurement spanning more than a decade of change in the natural environment, household agricultural behaviors, and individual fertility preferences to reexamine this question. Using fixed-effects models, we find that women experiencing increasing time required to collect firewood to heat and cook or fodder to feed animals (the dominant needs for natural resources in this setting) increased their desired family size, even as many other macro-level changes have reduced desired family size. In contrast to previous, cross-sectional studies we find no evidence of such a relationship for men. Our findings regarding time spent collecting firewood are also new. These results support the "vicious circle" perspective and economic theories of fertility pointing to the value of children for household labor. This feedback from natural resource constraint to increased fertility is an important mechanism for understanding long term environmental change.

NASA faked the moon landing--therefore, (climate) science is a hoax: an anatomy of the motivated rejection of science.

PubMed

Lewandowsky, Stephan; Oberauer, Klaus; Gignac, Gilles E

2013-05-01

Although nearly all domain experts agree that carbon dioxide emissions are altering the world's climate, segments of the public remain unconvinced by the scientific evidence. Internet blogs have become a platform for denial of climate change, and bloggers have taken a prominent role in questioning climate science. We report a survey of climate-blog visitors to identify the variables underlying acceptance and rejection of climate science. Our findings parallel those of previous work and show that endorsement of free-market economics predicted rejection of climate science. Endorsement of free markets also predicted the rejection of other established scientific findings, such as the facts that HIV causes AIDS and that smoking causes lung cancer. We additionally show that, above and beyond endorsement of free markets, endorsement of a cluster of conspiracy theories (e.g., that the Federal Bureau of Investigation killed Martin Luther King, Jr.) predicted rejection of climate science as well as other scientific findings. Our results provide empirical support for previous suggestions that conspiratorial thinking contributes to the rejection of science. Acceptance of science, by contrast, was strongly associated with the perception of a consensus among scientists.

Organizational consequences of staff turnover in outpatient substance abuse treatment programs.

PubMed

Knight, Danica K; Becan, Jennifer E; Flynn, Patrick M

2012-03-01

The purpose of this study was to examine the impact of staff turnover on perceptions of organizational demands and support among staff who remained employed in substance abuse treatment programs. The sample consisted of 353 clinical staff from 63 outpatient agencies. Two scales from the Survey of Organizational Functioning measured work environment demands (stress and inadequate staffing), and 3 measured supportive work relationships (communication, cohesion, and peer collaboration). Results from a series of multilevel models documented that counselors working in programs that had previously experienced high staff turnover perceived higher demands and lower support within their organization, even after controlling for other potentially burdensome factors such as budget, census, and individual measures of workload. Two individual-level variables, caseload and tenure, were important determinants of work environment demands but were not related to supportive work relationships. Findings suggest that staff turnover increases workplace demands, decreases perceptions of support, and underscores the need to reduce stress and minimize subsequent turnover among clinical staff. Copyright © 2012 Elsevier Inc. All rights reserved.

Organizational Consequences of Staff Turnover in Outpatient Substance Abuse Treatment Programs

PubMed Central

Knight, Danica K.; Edwards, Jennifer R.; Flynn, Patrick M.

2014-01-01

The purpose of this study was to examine the impact of staff turnover on perceptions of organizational demands and support among staff who remained employed in substance abuse treatment programs. The sample consisted of 353 clinical staff from 63 outpatient agencies. Two scales from the Survey of Organizational Functioning (SOF) measured work-environment demands (Stress, Inadequate Staffing), and three measured supportive work relationships (Communication, Cohesion, Peer Collaboration). Results from a series of multilevel models documented that counselors working in programs that had previously experienced high staff turnover perceived higher demands and lower support within their organization, even after controlling for other potentially burdensome factors such as budget, census, and individual measures of workload. Two individual-level variables, caseload and tenure, were important determinants of work-environment demands, but were not related to supportive work relationships. Findings suggest that staff turnover increases workplace demands and decreases perceptions of support, and underscore the need to reduce stress and minimize subsequent turnover among clinical staff. PMID:22154028

Parents, teachers and peer relations as predictors of risk behaviors and mental well-being among immigrant and Israeli born adolescents.

PubMed

Walsh, Sophie D; Harel-Fisch, Yossi; Fogel-Grinvald, Haya

2010-04-01

This study examines the roles of parents (monitoring, involvement and support at school), teachers (support) and peers (excess time spent with friends, peer rejection at school) in predicting risk behaviors (smoking and drinking) and mental well-being among 3499 Israeli-born and 434 immigrant adolescents ages 11, 13 and 15, in the 2006 WHO Health Behavior in School-Aged Children cross-national survey. Structural Equation Modeling (SEM) showed that for native Israeli youth, in line with previous developmental literature, all three relationships - parents, teachers and peers - have a significant impact on both mental well-being and risk behaviors. However, for immigrant adolescents, it was the school environment (parental support at school, teacher support and peer relationships) that proved to be the significant predictor of risk behaviors and mental health outcomes. These findings suggest that the school is an important social support in the health and mental well-being of immigrant schoolchildren. (c) 2010 Elsevier Ltd. All rights reserved.

Family group interventions in an early psychosis program: A re-evaluation of practice after 10 years of service delivery.

PubMed

Day, Kate; Starbuck, Rachael; Petrakis, Melissa

2017-08-01

The role of family in supporting service users in coping with illness and engaging in relapse prevention in early psychosis is important. Taking on this caring though is stressful and challenging, and it has been found that support and information for carers assists in their coping and reduces isolation. To evaluate the current utility of a psychoeducation group program in a public adult mental health service, for the families of people experiencing early psychosis. A purpose-designed pre- and post-intervention questionnaire was administered to quantitatively measure group participants' changes in perceptions of their understanding of mental illness and its treatment through attending the group. Additional qualitative items were used to determine other knowledge, benefits and any critical feedback. The group program continues to result in highly significant improvements in family members' understanding of psychosis, recovery, medications, relapse prevention and substance co-morbidities. Additional feedback reaffirmed previous findings that family members find group peer support valuable and that this reduces isolation and the experience of stigma. The current evaluation, conducted following 10 years of early psychosis group work, found there to be efficacy in family peer support groups and that it is important to provide family interventions in public early psychosis mental health services.

Stressors and Caregivers' Depression: Multiple Mediators of Self-Efficacy, Social Support, and Problem-Solving Skill.

PubMed

Tang, Fengyan; Jang, Heejung; Lingler, Jennifer; Tamres, Lisa K; Erlen, Judith A

2015-01-01

Caring for an older adult with memory loss is stressful. Caregiver stress could produce negative outcomes such as depression. Previous research is limited in examining multiple intermediate pathways from caregiver stress to depressive symptoms. This study addresses this limitation by examining the role of self-efficacy, social support, and problem solving in mediating the relationships between caregiver stressors and depressive symptoms. Using a sample of 91 family caregivers, we tested simultaneously multiple mediators between caregiver stressors and depression. Results indicate that self-efficacy mediated the pathway from daily hassles to depression. Findings point to the importance of improving self-efficacy in psychosocial interventions for caregivers of older adults with memory loss.

Using the temporal self-regulation theory to examine the influence of environmental cues on maintaining a healthy lifestyle.

PubMed

Booker, Liesel; Mullan, Barbara

2013-11-01

The aim of the current study is to explore the predictive utility of the temporal self-regulation theory (TST) for maintaining a healthy lifestyle (Hall & Fong, 2007, Health Psychology Review, 1, 6). According to TST, the influence of intention, self-regulation, and behavioural prepotency differs depending on the environmental context in which the behaviour is performed. This study examined the influence of perceptions about the supportiveness of the environmental context on TST-related factors. Temporal self-regulation theory was tested using a prospective design with a 1-week follow-up. One hundred and fifty-two undergraduates were administered three executive functioning tasks and an online questionnaire regarding their intentions to maintain a healthy lifestyle, environmental responsiveness, and previous behaviour. One week later, they completed a follow-up questionnaire. Participants who were supported by the environment were significantly more likely to maintain a healthy lifestyle than those distracted by the environment. Behavioural prepotency was significantly predictive of behaviour performance for 'supported' participants. Behavioural prepotency, planning, and response inhibition were significantly predictive of 'unsupported' participants' behaviour. These findings provided preliminary support for the use of TST for the prediction of healthy lifestyle behaviour. Importantly, this study provided support for the contention that the influence of TST-related factors would vary according to the perceived supportiveness of the environment. These findings suggest that environmental responsiveness may be an important determinant to close the intention-behaviour gap for maintaining a healthy lifestyle. © 2012 The British Psychological Society.

Category transfer in sequential causal learning: the unbroken mechanism hypothesis.

PubMed

Hagmayer, York; Meder, Björn; von Sydow, Momme; Waldmann, Michael R

2011-07-01

The goal of the present set of studies is to explore the boundary conditions of category transfer in causal learning. Previous research has shown that people are capable of inducing categories based on causal learning input, and they often transfer these categories to new causal learning tasks. However, occasionally learners abandon the learned categories and induce new ones. Whereas previously it has been argued that transfer is only observed with essentialist categories in which the hidden properties are causally relevant for the target effect in the transfer relation, we here propose an alternative explanation, the unbroken mechanism hypothesis. This hypothesis claims that categories are transferred from a previously learned causal relation to a new causal relation when learners assume a causal mechanism linking the two relations that is continuous and unbroken. The findings of two causal learning experiments support the unbroken mechanism hypothesis. Copyright © 2011 Cognitive Science Society, Inc.

Phylogenomic analysis of a rapid radiation of misfit fishes (Syngnathiformes) using ultraconserved elements.

PubMed

Longo, S J; Faircloth, B C; Meyer, A; Westneat, M W; Alfaro, M E; Wainwright, P C

2017-08-01

Phylogenetics is undergoing a revolution as large-scale molecular datasets reveal unexpected but repeatable rearrangements of clades that were previously thought to be disparate lineages. One of the most unusual clades of fishes that has been found using large-scale molecular datasets is an expanded Syngnathiformes including traditional long-snouted syngnathiform lineages (Aulostomidae, Centriscidae, Fistulariidae, Solenostomidae, Syngnathidae), as well as a diverse set of largely benthic-associated fishes (Callionymoidei, Dactylopteridae, Mullidae, Pegasidae) that were previously dispersed across three orders. The monophyly of this surprising clade of fishes has been upheld by recent studies utilizing both nuclear and mitogenomic data, but the relationships among major lineages within Syngnathiformes remain ambiguous; previous analyses have inconsistent topologies and are plagued by low support at deep divergences between the major lineages. In this study, we use a dataset of ultraconserved elements (UCEs) to conduct the first phylogenomic study of Syngnathiformes. UCEs have been effective markers for resolving deep phylogenetic relationships in fishes and, combined with increased taxon sampling, we expected UCEs to resolve problematic syngnathiform relationships. Overall, UCEs were effective at resolving relationships within Syngnathiformes at a range of evolutionary timescales. We find consistent support for the monophyly of traditional long-snouted syngnathiform lineages (Aulostomidae, Centriscidae, Fistulariidae, Solenostomidae, Syngnathidae), which better agrees with morphological hypotheses than previously published topologies from molecular data. This result was supported by all Bayesian and maximum likelihood analyses, was robust to differences in matrix completeness and potential sources of bias, and was highly supported in coalescent-based analyses in ASTRAL when matrices were filtered to contain the most phylogenetically informative loci. While Bayesian and maximum likelihood analyses found support for a benthic-associated clade (Callionymidae, Dactylopteridae, Mullidae, and Pegasidae) as sister to the long-snouted clade, this result was not replicated in the ASTRAL analyses. The base of our phylogeny is characterized by short internodes separating major syngnathiform lineages and is consistent with the hypothesis of an ancient rapid radiation at the base of Syngnathiformes. Syngnathiformes therefore present an exciting opportunity to study patterns of morphological variation and functional innovation arising from rapid but ancient radiation. Copyright © 2017 Elsevier Inc. All rights reserved.

A picture is worth a thousand words? Not when it comes to associative memory of older adults.

PubMed

Guez, Jonathan; Lev, Dror

2016-02-01

Properties of the binding mechanism in associative recognition were studied by examining the influence of the pictorial superiority effect on the age-related associative deficit. The informative aspect of associative recognition is the recollection of the pairing. Previous findings indicate that recollection is susceptible to aging and that pictorial presentation can enhance recollection and facilitate associative recognition. Pictorial presentation was found to facilitate item recognition by both young and older adults, associative recognition by young adults, but not associative recognition by older adults. Our findings support the hypothesis that the binding mechanism in associative recognition is content independent. Theoretical implications are discussed. (c) 2016 APA, all rights reserved).

Which stocks are profitable? A network method to investigate the effects of network structure on stock returns

NASA Astrophysics Data System (ADS)

Chen, Kun; Luo, Peng; Sun, Bianxia; Wang, Huaiqing

2015-10-01

According to asset pricing theory, a stock's expected returns are determined by its exposure to systematic risk. In this paper, we propose a new method for analyzing the interaction effects among industries and stocks on stock returns. We construct a complex network based on correlations of abnormal stock returns and use centrality and modularity, two popular measures in social science, to determine the effect of interconnections on industry and stock returns. Supported by previous studies, our findings indicate that a relationship exists between inter-industry closeness and industry returns and between stock centrality and stock returns. The theoretical and practical contributions of these findings are discussed.

Neonatal cholestasis and focal medullary dysplasia of the kidneys in a case of microcephalic osteodysplastic primordial dwarfism.

PubMed Central

Berger, A; Haschke, N; Kohlhauser, C; Amman, G; Unterberger, U; Weninger, M

1998-01-01

We report on a male infant who presented with intrauterine growth retardation, severe postnatal failure to thrive, microcephaly, facial dysmorphism, and skeletal dysplasia. The clinical and radiological findings are consistent with former descriptions of microcephalic osteodysplastic primordial dwarfism (MOPD) type I/III. In addition to previously published features, multiple fractures of the long bones, severe neonatal cholestasis, and histological dysplasia of the kidneys were found. The boy died at the age of 8 months. The new finding of focal renal medullary dysplasia further supports the hypothesis of a basic defect in tissue differentiation in the pathogenesis of this rare condition. Images PMID:9475098

Chloroplast variation is incongruent with classification of the Australian bloodwood eucalypts (genus Corymbia, family Myrtaceae)

PubMed Central

Schuster, Tanja M.; Setaro, Sabrina D.; Tibbits, Josquin F. G.; Batty, Erin L.; Fowler, Rachael M.; McLay, Todd G. B.; Wilcox, Stephen; Ades, Peter K.

2018-01-01

Previous molecular phylogenetic analyses have resolved the Australian bloodwood eucalypt genus Corymbia (~100 species) as either monophyletic or paraphyletic with respect to Angophora (9–10 species). Here we assess relationships of Corymbia and Angophora using a large dataset of chloroplast DNA sequences (121,016 base pairs; from 90 accessions representing 55 Corymbia and 8 Angophora species, plus 33 accessions of related genera), skimmed from high throughput sequencing of genomic DNA, and compare results with new analyses of nuclear ITS sequences (119 accessions) from previous studies. Maximum likelihood and maximum parsimony analyses of cpDNA resolve well supported trees with most nodes having >95% bootstrap support. These trees strongly reject monophyly of Corymbia, its two subgenera (Corymbia and Blakella), most taxonomic sections (Abbreviatae, Maculatae, Naviculares, Septentrionales), and several species. ITS trees weakly indicate paraphyly of Corymbia (bootstrap support <50% for maximum likelihood, and 71% for parsimony), but are highly incongruent with the cpDNA analyses, in that they support monophyly of both subgenera and some taxonomic sections of Corymbia. The striking incongruence between cpDNA trees and both morphological taxonomy and ITS trees is attributed largely to chloroplast introgression between taxa, because of geographic sharing of chloroplast clades across taxonomic groups. Such introgression has been widely inferred in studies of the related genus Eucalyptus. This is the first report of its likely prevalence in Corymbia and Angophora, but this is consistent with previous morphological inferences of hybridisation between species. Our findings (based on continent-wide sampling) highlight a need for more focussed studies to assess the extent of hybridisation and introgression in the evolutionary history of these genera, and that critical testing of the classification of Corymbia and Angophora requires additional sequence data from nuclear genomes. PMID:29668710

Supercritical fluid chromatography for GMP analysis in support of pharmaceutical development and manufacturing activities.

PubMed

Hicks, Michael B; Regalado, Erik L; Tan, Feng; Gong, Xiaoyi; Welch, Christopher J

2016-01-05

Supercritical fluid chromatography (SFC) has long been a preferred method for enantiopurity analysis in support of pharmaceutical discovery and development, but implementation of the technique in regulated GMP laboratories has been somewhat slow, owing to limitations in instrument sensitivity, reproducibility, accuracy and robustness. In recent years, commercialization of next generation analytical SFC instrumentation has addressed previous shortcomings, making the technique better suited for GMP analysis. In this study we investigate the use of modern SFC for enantiopurity analysis of several pharmaceutical intermediates and compare the results with the conventional HPLC approaches historically used for analysis in a GMP setting. The findings clearly illustrate that modern SFC now exhibits improved precision, reproducibility, accuracy and robustness; also providing superior resolution and peak capacity compared to HPLC. Based on these findings, the use of modern chiral SFC is recommended for GMP studies of stereochemistry in pharmaceutical development and manufacturing. Copyright © 2015 Elsevier B.V. All rights reserved.

The influence of daily routines on engaging in diabetes self-management.

PubMed

Fritz, Heather

2014-05-01

In contrast to previous research concerning the importance of routines in occupational engagement, most of which have largely focused on the routines of children and families, in this study a qualitative methodology was used to understand how routines function in a specific occupation: diabetes self-management (DSM). Ten low-income women participated in a multiple-methods study that involved completing a time-geographic diary (TGD) and participating in a TGD interview. Findings reveal that pre-existing routines must be changed so that they may better support engagement in DSM, and that such changes are tied to underlying habits and life situations. The experiences of study participants also showed that the distribution of daily occupations through time and across social spheres can be both supportive of and problematic for engaging in DSM. In addition, the structure and sequence of competing daily occupations influences the available time and opportunities for people to further develop their skills and become more adept self-managers. The implications of these findings for occupational science and therapy are discussed.

Principles and tools for collaborative entity-based intelligence analysis.

PubMed

Bier, Eric A; Card, Stuart K; Bodnar, John W

2010-01-01

Software tools that make it easier for analysts to collaborate as a natural part of their work will lead to better analysis that is informed by more perspectives. We are interested to know if software tools can be designed that support collaboration even as they allow analysts to find documents and organize information (including evidence, schemas, and hypotheses). We have modified the Entity Workspace system, described previously, to test such designs. We have evaluated the resulting design in both a laboratory study and a study where it is situated with an analysis team. In both cases, effects on collaboration appear to be positive. Key aspects of the design include an evidence notebook optimized for organizing entities (rather than text characters), information structures that can be collapsed and expanded, visualization of evidence that emphasizes events and documents (rather than emphasizing the entity graph), and a notification system that finds entities of mutual interest to multiple analysts. Long-term tests suggest that this approach can support both top-down and bottom-up styles of analysis.

Pathways to Colonization

NASA Technical Reports Server (NTRS)

Smitherman, David V., Jr.

2003-01-01

The steps required for space colonization are many to grow from our current 3-person International Space Station, now under construction, to an infrastructure that can support hundreds and eventually thousands of people in space. This paper will summarize the author's findings from numerous studies and workshops on related subjects and identify some of the critical next steps toward space colonization. Findings will be drawn from the author s previous work on space colony design, space infrastructure workshops, and various studies that addressed space policy. In conclusion, this paper will note that significant progress has been made on space facility construction through the International Space Station program, and that significant efforts are needed in the development of new reusable Earth to Orbit transportation systems. The next key steps will include reusable in space transportation systems supported by in space propellant depots, the continued development of inflatable habitat and space elevator technologies, and the resolution of policy issues that will establish a future vision for space development.

The Nature of Elementary Science Teachers' Experiences with Synchronous Online, Asynchronous Online and Face-to-Face Coaching

NASA Astrophysics Data System (ADS)

Gilbert, Amanda M.

This study investigated the nature of instructional coaching interactions in three formats: online synchronous, online asynchronous, and face-to-face. Knight's (2007) Seven Partnership Principles of Instructional Coaching were used as a framework to analyze and compare the coaching interactions between coach and teacher to determine whether online coaching may be a viable option to provide support for the teachers unprepared to teach the new science standards. Some previous research has suggested that online communication can result in deeper personal interactions (Walther, 1996), while other studies suggest that interactions are more natural and easier in formats that are more similar to face-to-face interactions (Kock, 2005). The findings of this study support the media naturalness theory (Kock, 2005) and suggest that collaboration may be especially difficult in asynchronous online communication. Although differences were noted in the actual interactions, teacher perception remained fairly consistently positive across the three formats. Research beyond this exploratory study is needed to make findings generalizable.

Homophily of Vocabulary Usage: Beneficial Effects of Vocabulary Similarity on Online Health Communities Participation

PubMed Central

Park, Albert; Hartzler, Andrea L.; Huh, Jina; McDonald, David W.; Pratt, Wanda

2015-01-01

Online health communities provide popular platforms for individuals to exchange psychosocial support and form ties. Although regular active participation (i.e., posting to interact with other members) in online health communities can provide important benefits, sustained active participation remains challenging for these communities. Leveraging previous literature on homophily (i.e., “love of those who are like themselves”), we examined the relationship between vocabulary similarity (i.e., homophily of word usage) of thread posts and members’ future interaction in online health communities. We quantitatively measured vocabulary similarity by calculating, in a vector space model, cosine similarity between the original post and the first reply in 20,499 threads. Our findings across five online health communities suggest that vocabulary similarity is a significant predictor of members’ future interaction in online health communities. These findings carry practical implications for facilitating and sustaining online community participation through beneficial effects of homophily in the vocabulary of essential peer support. PMID:26958240

Maternal Attachment Style and Responses to Adolescents’ Negative Emotions: The Mediating Role of Maternal Emotion Regulation

PubMed Central

Jones, Jason D.; Brett, Bonnie E.; Ehrlich, Katherine B.; Lejuez, Carl W.; Cassidy, Jude

2014-01-01

SYNOPSIS Objective Previous research has examined the developmental consequences, particularly in early childhood, of parents’ supportive and unsupportive responses to children’s negative emotions. Much less is known about factors that explain why parents respond in ways that may support or undermine their children’s emotions, and even less is known about how these parenting processes unfold with adolescents. We examined the associations between mothers’ attachment styles and their distress, harsh, and supportive responses to their adolescents’ negative emotions two years later and whether these links were mediated by maternal emotion regulation difficulties. Design Mothers in a longitudinal study (n = 230) reported on their attachment style, difficulties regulating their emotions, and their hypothetical responses to their adolescents’ negative emotions, respectively, at consecutive laboratory visits one year apart. Results Mothers who reported greater attachment-related avoidance and anxiety reported having greater difficulties with emotion regulation one year later. Emotion dysregulation, in turn, predicted more distressed, harsher, and less supportive maternal responses to adolescents’ negative emotions the following year. In addition, greater avoidance directly predicted harsher maternal responses two years later. Conclusions These findings extend previous research by identifying maternal attachment style as a predictor of responses to adolescent distress and by documenting the underlying role of emotion dysregulation in the link between adult attachment style and parenting. PMID:25568638

Suicidal Imagery in a Previously Depressed Community Sample

PubMed Central

Crane, Catherine; Shah, Dhruvi; Barnhofer, Thorsten; Holmes, Emily A.

2015-01-01

This study sought to replicate previous findings of vivid suicide-related imagery in previously suicidal patients in a community sample of adults with a history of depression. Twenty-seven participants were interviewed regarding suicidal imagery. Seventeen participants reported prior suicidal ideation or behaviour in the clinical assessment, and the vast majority of these also reported experiencing suicide-related imagery when at their most depressed and despairing, in many cases in the form of flash-forwards to imagined future suicidal acts. Interestingly, five of the 10 participants who did not report suicidal ideation or behaviour in the clinical interview also described prominent imagery related to themes of death and suicide, but in several cases, these images were associated with meanings that seemed to act to reduce the likelihood of subsequent suicidal acts. Severity of prior suicidality was associated with lower levels of imagery-related distress and higher levels of imagery-related comfort. These findings support the idea that suicide-related imagery is an important component in the phenomenology of depression and despair and hint at potentially important differences in the meaning associated with such imagery between those individuals who report experiencing suicidal ideation or behaviour when depressed and those who do not. The findings are consistent with Joiner’s model of acquired capability for suicide through habituation to pain and fear of suicide and suggest that it may be useful to tackle such imagery directly in the treatment of suicidal patients. PMID:21254309

Effects of chronic cocaine, morphine and methamphetamine on the mobility, immobility and stereotyped behaviors in crayfish.

PubMed

Imeh-Nathaniel, Adebobola; Rincon, Natalia; Orfanakos, Vasiliki Bessie; Brechtel, Leanne; Wormack, Leah; Richardson, Erika; Huber, Robert; Nathaniel, Thomas I

2017-08-14

The worth of crayfish as a model system for studies of addiction was not previously recognized because a drug-reward phenomenon had not been documented in this model system. In our previous experiments, we demonstrate that the crayfish natural reward pathways are sensitive to human drugs of abuse. This finding supports crayfish as a suitable model to characterize specific behaviors that are relevant in drug addiction research, and the current study builds on our previous findings. The aim of the present study was to investigate unconditioned neurobehavioral effects of repeated treatment regimens using cocaine, morphine, and methamphetamine for three consecutive days. We analyzed mobility, immobility and characterized stereotypic behaviors following intracardial infusions of 2.0μg/g or 10.0μg/g doses of cocaine, morphine, and methamphetamine for three days. The results showed that systemic cocaine, morphine, and methamphetamine increased mobility at a low dose of 2.0μg/g more effectively than a high dose of 10.0μg/g, while simultaneously showing that the high dose exerted a more prominent effect in increasing immobility. Moreover, systemic cocaine, morphine, and methamphetamine injections have discerning effects towards a group of defined unconditioned stereotyped behavioral patterns associated with each drug, rather than a shared universal behavioral effect. These findings provide insight into the behavioral and pharmacological basis responsible for the unconditioned effects of these drugs in crayfish. Copyright © 2017. Published by Elsevier B.V.

Single Nucleotide Polymorphism Analysis of European Archaeological M. leprae DNA

PubMed Central

Watson, Claire L.; Lockwood, Diana N. J.

2009-01-01

Background Leprosy was common in Europe eight to twelve centuries ago but molecular confirmation of this has been lacking. We have extracted M. leprae ancient DNA (aDNA) from medieval bones and single nucleotide polymorphism (SNP) typed the DNA, this provides insight into the pattern of leprosy transmission in Europe and may assist in the understanding of M. leprae evolution. Methods and Findings Skeletons have been exhumed from 3 European countries (the United Kingdom, Denmark and Croatia) and are dated around the medieval period (476 to 1350 A.D.). we tested for the presence of 3 previously identified single nucleotide polymorphisms (SNPs) in 10 aDNA extractions. M. leprae aDNA was extracted from 6 of the 10 bone samples. SNP analysis of these 6 extractions were compared to previously analysed European SNP data using the same PCR assays and were found to be the same. Testing for the presence of SNPs in M. leprae DNA extracted from ancient bone samples is a novel approach to analysing European M. leprae DNA and the findings concur with the previously published data that European M. leprae strains fall in to one group (SNP group 3). Conclusions These findings support the suggestion that the M. leprae genome is extremely stable and show that archaeological M. leprae DNA can be analysed to gain detailed information about the genotypic make-up of European leprosy, which may assist in the understanding of leprosy transmission worldwide. PMID:19847306

Encoding and Decoding of Multi-Channel ICMS in Macaque Somatosensory Cortex.

PubMed

Dadarlat, Maria C; Sabes, Philip N

2016-01-01

Naturalistic control of brain-machine interfaces will require artificial proprioception, potentially delivered via intracortical microstimulation (ICMS). We have previously shown that multi-channel ICMS can guide a monkey reaching to unseen targets in a planar workspace. Here, we expand on that work, asking how ICMS is decoded into target angle and distance by analyzing the performance of a monkey when ICMS feedback was degraded. From the resulting pattern of errors, we found that the animal's estimate of target direction was consistent with a weighted circular-mean strategy-close to the optimal decoding strategy given the ICMS encoding. These results support our previous finding that animals can learn to use this artificial sensory feedback in an efficient and naturalistic manner.

CNS listeriosis: rhomboencephalitis in a healthy, immunocompetent person.

PubMed

Katz, R I; McGlamery, M E; Levy, R

1979-08-01

A previously healthy woman had a febrile illness resembling aseptic meningoencephalitis. With the exception of mild increase in both CSF pressure and protein concentration, initial findings were normal, including negative bacterial cultures. Bilateral pyramidal and cerebellar signs with multiple lower cranial nerve pareses developed over a 48-hour period beginning on the tenth hospital day. Repeated blood and CSF studies had previously been nondiagnostic, but at that time, cultures became positive for Listeria monocytogenes. No underlying systemic disease or immunodeficiency was discovered. With appropriate antibiotic and supportive therapy, she made slow but significant improvement and, by the time of discharge from the hospital, had only minimal residual neurologic deficit. Clinical aspects of CNS listeriosis including the rare pontomedullary involvement are discussed.

The Effect of Trail Pheromone and Path Confinement on Learning of Complex Routes in the Ant Lasius niger

PubMed Central

Czaczkes, Tomer J.; Weichselgartner, Tobias; Bernadou, Abel; Heinze, Jürgen

2016-01-01

Route learning is key to the survival of many central place foragers, such as bees and many ants. For ants which lay pheromone trails, the presence of a trail may act as an important source of information about whether an error has been made. The presence of trail pheromone has been demonstrated to support route learning, and the effect of pheromones on route choice have been reported to persist even after the pheromones have been removed. This could be explained in two ways: the pheromone may constrain the ants onto the correct route, thus preventing errors and aiding learning. Alternatively, the pheromones may act as a ‘reassurance’, signalling that the learner is on the right path and that learning the path is worthwhile. Here, we disentangle pheromone presence from route confinement in order to test these hypotheses, using the ant Lasius niger as a model. Unexpectedly, we did not find any evidence that pheromones support route learning. Indeed, there was no evidence that ants confined to the correct route learned at all. Thus, while we cannot support the ‘reassurance’ hypothesis, we can rule out the ‘confinement’ hypothesis. Other findings, such as a reduction in pheromone deposition in the presence of trail pheromones, are remarkably consistent with previous experiments. As previously reported, ants which make errors on their outward journey upregulate pheromone deposition on their return. Surprisingly, ants which would go on to make an error down-regulate pheromone deposition on their outward journey, hinting at a capacity for ants to gauge the quality of their own memories. PMID:26959996

Changing to Concept-Based Curricula: The Process for Nurse Educators.

PubMed

Baron, Kristy A

2017-01-01

The complexity of health care today requires nursing graduates to use effective thinking skills. Many nursing programs are revising curricula to include concept-based learning that encourages problem-solving, effective thinking, and the ability to transfer knowledge to a variety of situations-requiring nurse educators to modify their teaching styles and methods to promote student-centered learning. Changing from teacher-centered learning to student-centered learning requires a major shift in thinking and application. The focus of this qualitative study was to understand the process of changing to concept-based curricula for nurse educators who previously taught in traditional curriculum designs. The sample included eight educators from two institutions in one Western state using a grounded theory design. The themes that emerged from participants' experiences consisted of the overarching concept, support for change, and central concept, finding meaning in the change. Finding meaning is supported by three main themes : preparing for the change, teaching in a concept-based curriculum, and understanding the teaching-learning process. Changing to a concept-based curriculum required a major shift in thinking and application. Through support, educators discovered meaning to make the change by constructing authentic learning opportunities that mirrored practice, refining the change process, and reinforcing benefits of teaching.

Social Class, Economic Inequality, and the Convergence of Policy Preferences: Evidence from 24 Modern Democracies.

PubMed

Andersen, Robert; Curtis, Josh

2015-08-01

Using data from the World Values Survey and national-level indicators for 24 modern democracies, we assess the influence of social class and economic inequality on preferences for government responsibility. We improve on previous research by using multilevel models that account for differences in attitudes both within (i.e., over time) and across countries. Our findings are consistent with the economic self-interest hypothesis. Specifically, working class individuals, who tend to gain the most from government intervention because of their low and often more precarious economic position, are more likely than others to support government intervention. We also find a positive relationship between national-level income inequality and support for government intervention. As income inequality rises, its social ills tend to be more pervasive, resulting in public opinion becoming more supportive of governments taking responsibility for their citizens. We further demonstrate that inequality moderates the relationship between social class and attitudes. Although the effect of income inequality is positive for all social classes, attitudes across social classes become more similar as inequality rises. © 2015 Canadian Sociological Association/La Société canadienne de sociologie.

Social support patterns of collegiate athletes before and after injury.

PubMed

Yang, Jingzhen; Peek-Asa, Corinne; Lowe, John B; Heiden, Erin; Foster, Danny T

2010-01-01

Social support has been identified as an important factor in facilitating recovery from injury. However, no previous authors have prospectively assessed the change in social support patterns before and after injury. To examine the preinjury and postinjury social support patterns among male and female collegiate athletes. Prospective observational study. A Big Ten Conference university. A total of 256 National Collegiate Athletic Association Division I male and female collegiate athletes aged 18 or older from 13 sports teams. Injury incidence was identified using the Sports Injury Monitoring System. Social support was measured using the 6-item Social Support Questionnaire. Data on preinjury and postinjury social support patterns were compared. Male athletes reported more sources of social support than female athletes, whereas female athletes had greater satisfaction with the support they received. Athletes' social support patterns changed after they became injured. Injured athletes reported relying more on coaches (P = .003), athletic trainers (P < .0001), and physicians (P = .003) for social support after they became injured. Athletes also reported greater postinjury satisfaction with social support received from friends (P = .019), coaches (P = .001), athletic trainers (P < .0001), and physicians (P = .003). Our findings identify an urgent need to better define the psychosocial needs of injured athletes and also strongly suggest that athletic trainers have a critical role in meeting these needs.

Intra-group Stigma: Examining Peer Relationships Among Women in Recovery for Addictions.

PubMed

Gunn, Alana J; Canada, Kelli E

This grounded theory study explores how women with histories of addiction perceive stigma while in treatment. In-depth interviews were conducted with 30 women participating in a residential drug treatment center. Previous research has found that support from peers during recovery can be critical to managing illnesses. In fact, researchers have postulated that peers can be a more effective form of support than even family. This study extends existing literature indicating that peer support systems can be supportive, however they can also can be perceived as negative support that impose stigmas. Findings reveal that women perceive stigmas due to how various types of drug use violate societal expectations and conflict with notions of deservingness. Specifically, the "hard users" (i.e., women who use heroin or crack cocaine) perceive stigmas regarding how their drug use violates norms of womanhood. Moreover, the "soft users" (i.e., those who use alcohol or marijuana) perceive stigmas that their drug use is considered undeserving of support. This paper explores the factors that contribute to stigma amongst populations who potentially face marginalization from larger society. Implications for treatment and group work are discussed.

Reducing self-objectification: are dissonance-based methods a possible approach?

PubMed

Becker, Carolyn Black; Hill, Kaitlin; Greif, Rebecca; Han, Hongmei; Stewart, Tiffany

2013-01-01

Previous research has documented that self-objectification is associated with numerous negative outcomes including body shame, eating disorder (ED) pathology, and negative affect. This exploratory open study investigated whether or not an evidence-based body image improvement program that targets thin-ideal internalization in university women also reduces self-objectification. A second aim of the study was to determine if previous findings showing that body shame mediated the relationship between self-objectification and eating disorder pathology at a single time point (consistent with self-objectification theory) but did not mediate longitudinally (inconsistent with self-objectification theory) would be replicated in a new sample under novel conditions. Ninety-six university women completed a peer-led dissonance-based intervention, along with assessment measures at pre-, post-intervention, 8-week and 8-month follow-up. To address the open trial nature of this study, a planned manipulation check was included to make sure that peer-led dissonance decreased thin-ideal internalization, body dissatisfaction, eating disorder pathology, and negative affect with effect sizes being similar to past randomized controlled trials. We hypothesized that all three subscales of the Objectified Body Consciousness Scale (i.e., self-surveillance, body shame, and appearance control beliefs) would be reduced. In addition, we hypothesized that body shame would mediate the relationship between self-objectification (i.e., self-surveillance) and eating disorder pathology at a both at a single time point and longitudinally. The planned manipulation check supported the interpretation that peer-led dissonance in this study largely yielded comparable changes to past controlled trials. In terms of changes in dependent variables, results supported all hypotheses with the exception of body shame, which remained unchanged. With regards to the mediation analyses, our first (cross-sectional) hypothesis but not our second (longitudinal) was supported. Findings provide preliminary support for the use of dissonance interventions in reducing self-surveillance and body control beliefs. Results for body shame and the mediation analyses suggest that greater scrutiny of the body shame construct is warranted.

Fostering transition to adulthood for young Australian males: an exploratory study of Men's Sheds' intergenerational mentoring programmes.

PubMed

Rahja, Miia; Scanlan, Justin Newton; Wilson, Nathan J; Cordier, Reinie

2016-06-01

Men's Sheds are community spaces where socialisation occurs alongside participation in meaningful activities. Shed activities and socialisation make them useful for supporting transition to adulthood of 'at-risk' young people through meaningful occupations. Many sheds have implemented intergenerational mentoring programmes. However, many programmes are established on an ad-hoc basis without specific attention to factors that may support effective and sustainable outcomes. We aimed to inform future programmes by exploring different programmes to provide insight into the purpose, design and programme characteristics that are perceived as beneficial for young males. Four Sydney-based sheds providing intergenerational mentoring programmes were selected. We interviewed shed coordinators, mentors and mentees to explore their perceptions of programme characteristics that supported mentees' transition to adulthood. Thematic analysis techniques were used to first analyse and understand the unique context of each programme and these were then merged and integrated to identify the most helpful aspects of these mentoring programmes. Mentor attitude towards the mentees, freedom to make independent choices and the nature and perceived usefulness of the project were considered the most significant characteristics of these programmes. This was the first known examination of the different characteristics of Men's Sheds intergenerational mentoring programmes. On the basis of our findings, we have made recommendations to help guide the planning and implementation of future programmes. While our findings largely support previous research on mentoring programmes, findings from this study suggest that 'expert skills' may not be as important as mentor attitude to working with the mentees. © 2016 Occupational Therapy Australia.

Immunocytochemical localization of amelogenin in rat incisor ameloblasts using ultrathin frozen sections.

PubMed

Nishikawa, S; Takagi, T; Sasa, S

1990-01-01

The localization of amelogenin, an enamel matrix protein, was examined by ultrastructural immunocytochemistry using unembedded ultrathin frozen sections of undecalcified rat incisor ameloblasts. Antibody against bovine amelogenin labeled Golgi complexes, secretory granules, and lysosomal structures in the preameloblasts and inner enamel-secretory ameloblasts as well as the enamel. The antibody also labeled dentin matrix facing preameloblasts. These results support the findings in previous reports using conventional epon embedded specimens. However, rough-surfaced endoplasmic reticulum failed to be labeled by this antibody.

Exact RG flow equations and quantum gravity

NASA Astrophysics Data System (ADS)

de Alwis, S. P.

2018-03-01

We discuss the different forms of the functional RG equation and their relation to each other. In particular we suggest a generalized background field version that is close in spirit to the Polchinski equation as an alternative to the Wetterich equation to study Weinberg's asymptotic safety program for defining quantum gravity, and argue that the former is better suited for this purpose. Using the heat kernel expansion and proper time regularization we find evidence in support of this program in agreement with previous work.

Autoradiographic labeling of the cholinergic habenulo-interpeduncular projection.

PubMed

Villani, L; Contestabile, A; Fonnum, F

1983-12-11

The transmitter-specific autoradiographic method has been used to retrogradely trace the habenulo-interpeduncular cholinergic projection. [3H]Choline injection in the interpeduncular nucleus resulted in remarkable labeling of the fasciculus retroflexus and in very strong accumulation of silver grains in the medial habenula. Brainstem nuclei sending non-cholinergic projections to the interpeduncular nucleus were not labeled. The present findings strongly support the notion of a cholinergic medial habenula-interpeduncular nucleus projection in agreement with recent immunohistochemical evidence, but in contrast to previous immunocytochemical and pharmacohistochemical results.

An exploration of clinical decision making in mental health triage.

PubMed

Sands, Natisha

2009-08-01

Mental health (MH) triage is a specialist area of clinical nursing practice that involves complex decision making. The discussion in this article draws on the findings of a Ph.D. study that involved a statewide investigation of the scope of MH triage nursing practice in Victoria, Australia. Although the original Ph.D. study investigated a number of core practices in MH triage, the focus of the discussion in this article is specifically on the findings related to clinical decision making in MH triage, which have not previously been published. The study employed an exploratory descriptive research design that used mixed data collection methods including a survey questionnaire (n = 139) and semistructured interviews (n = 21). The study findings related to decision making revealed a lack of empirically tested evidence-based decision-making frameworks currently in use to support MH triage nursing practice. MH triage clinicians in Australia rely heavily on clinical experience to underpin decision making and have little of knowledge of theoretical models for practice, such as methodologies for rating urgency. A key recommendation arising from the study is the need to develop evidence-based decision-making frameworks such as clinical guidelines to inform and support MH triage clinical decision making.

Mental health and individual experience of unemployed young adults in Japan

PubMed Central

KITO, Aiko; UENO, Takeji

2015-01-01

This study focused on the subjective experiences and mental health of young, unemployed adults in Japan. We explored how individuals describe their experiences of becoming unemployed and how these experiences influence their mental health within the current Japanese sociocultural context, using a social constructionist approach. We collected data from October 2012 to January 2013. Participants were 25 young unemployed Japanese job seekers (15 females), who were recruited using a purposive sampling strategy including snowball sampling. We conducted semi-structured interviews focusing on participants’ previous work and job search experience, their lifestyle and health, the social support they considered necessary, their future job-seeking plans, and their demographic characteristics. Using thematic analysis, we identified four key themes from the interview data: stress relief, re-energization for future work, new job skills acquisition, and lifestyle change. The findings indicate that unemployment is sometimes experienced as more beneficial than employment. This might be because of the poor working environment in Japan, the financial support participants received, and the experience of short-term unemployment. The findings suggest that intervention is necessary to help young adults in Japan find high-quality jobs and that we must promote fair employment and decent working conditions for them. PMID:26320730

Mental health and individual experience of unemployed young adults in Japan.

PubMed

Kito, Aiko; Ueno, Takeji

2016-01-01

This study focused on the subjective experiences and mental health of young, unemployed adults in Japan. We explored how individuals describe their experiences of becoming unemployed and how these experiences influence their mental health within the current Japanese sociocultural context, using a social constructionist approach. We collected data from October 2012 to January 2013. Participants were 25 young unemployed Japanese job seekers (15 females), who were recruited using a purposive sampling strategy including snowball sampling. We conducted semi-structured interviews focusing on participants' previous work and job search experience, their lifestyle and health, the social support they considered necessary, their future job-seeking plans, and their demographic characteristics. Using thematic analysis, we identified four key themes from the interview data: stress relief, re-energization for future work, new job skills acquisition, and lifestyle change. The findings indicate that unemployment is sometimes experienced as more beneficial than employment. This might be because of the poor working environment in Japan, the financial support participants received, and the experience of short-term unemployment. The findings suggest that intervention is necessary to help young adults in Japan find high-quality jobs and that we must promote fair employment and decent working conditions for them.

Multiple orthokeratinized odontogenic cysts: a case report.

PubMed

Cheng, Yi-Shing Lisa; Liang, Hui; Wright, John; Teenier, Tom

2015-03-01

The purpose of this report is to document the clinical, radiographic, pathological and molecular findings of the first case of multiple orthokeratinized odontogenic cysts (OOCs). Multiple odontogenic keratocysts are one of the major features of nevoid basal cell carcinoma syndrome (NBCCS), and loss of heterozygosity in the PTCH gene, the culprit gene for NBCCS, has recently been found in sporadic OOC cases. Therefore, in this presenting case, we also investigated the possibility that this patient might also have NBCCS, by comparing the available clinical information and the molecular findings of this case to the diagnostic criteria for NBCCS (as proposed by the First International Colloquium on NBCCS in 2011). However, this patient with multiple OOCs showed no evidence of having NBCCS. This conclusion supports the findings from previous case series based on sporadic cases that OOC does not appear to be associated with NBCCS.

Combined effects of Hurricane Katrina and Hurricane Gustav on the mental health of mothers of small children.

PubMed

Harville, E W; Xiong, X; Smith, B W; Pridjian, G; Elkind-Hirsch, K; Buekens, P

2011-05-01

Few studies have assessed the results of multiple exposures to disaster. Our objective was to examine the effect of experiencing Hurricane Gustav on mental health of women previously exposed to Hurricane Katrina. A total of 102 women from Southern Louisiana were interviewed by telephone. Experience of the hurricanes was assessed with questions about injury, danger and damage, while depression was assessed with the Edinburgh Depression Scale and post-traumatic stress disorder using the Post-Traumatic Checklist. Minor stressors, social support, trait resilience and perceived benefit had been measured previously. Mental health was examined with linear and log-linear models. Women who had a severe experience of both Gustav and Katrina scored higher on the mental health scales, but finding new ways to cope after Katrina or feeling more prepared was not protective. About half the population had better mental health scores after Gustav than at previous measures. Improvement was more likely among those who reported high social support or low levels of minor stressors, or were younger. Trait resilience mitigated the effect of hurricane exposure. Multiple disaster experiences are associated with worse mental health overall, although many women are resilient. Perceiving benefit after the first disaster was not protective. © 2010 Blackwell Publishing.

High and novel genetic diversity of Francisella tularensis in Germany and indication of environmental persistence.

PubMed

Schulze, C; Heuner, K; Myrtennäs, K; Karlsson, E; Jacob, D; Kutzer, P; GROßE, K; Forsman, M; Grunow, R

2016-10-01

In Germany tularemia is a re-emerging zoonotic disease. Therefore, we investigated wild animals and environmental water samples for the presence and phylogenetic diversity of Francisella tularensis in the poorly studied Berlin/Brandenburg region. The phylogenomic analysis of three isolates from wild animals revealed three new subclades within the phylogenetic tree of F. tularensis [B.71 from a raccoon dog (Nyctereutes procyonoides); B.74 from a red fox (Vulpes vulpes), and B.75 from a Eurasian beaver (Castor fiber albicus)]. The results from histological, PCR, and genomic investigations on the dead beaver showed that the animal suffered from a systemic infection. Indications were found that the bacteria were released from the beaver carcass into the surrounding environment. We demonstrated unexpectedly high and novel phylogenetic diversity of F. tularensis in Germany and the fact that the bacteria persist in the environment for at least one climatic season. These findings support a broader host species diversity than previously known regarding Germany. Our data further support the assumption derived from previous serological studies of an underestimated frequency of occurrence of the pathogen in the environment and in wild animals. F. tularensis was isolated from animal species not previously reported as natural hosts in Germany.

The Role of Motivation in Understanding Social Contextual Influences on Physical Activity in Underserved Adolescents in the ACT Trial: A Cross-Sectional Study

PubMed Central

Wilson, Dawn K.; Van Horn, M. Lee; Zarrett, Nicole

2012-01-01

Abstract Background Previous research has shown that social contextual factors are important in understanding physical activity (PA) behavior, although little is known about how these factors may relate to PA, especially in underserved adolescents (low income, minorities). This study examined how motivation may differentially mediate the relationship of two social contextual variables (i.e., peer and parent social support) and moderate-to-vigorous PA (MVPA). Methods Baseline data (n=1421 sixth graders, 54% female, 72% African American) from the Active by Choice Today (ACT) trial in underserved adolescents were analyzed. Motivation was examined as a mediator of the relationships between peer social support, parent social support, and MVPA (measured by 7-day accelerometer estimates). Results Motivation and peer but not parent support were significantly related to MVPA overall. Significant mediation effects were found indicating motivation partially mediated the relation between peer social support and MVPA and to a lesser degree parent support and MVPA. Conclusions These findings provide support for the importance of social contextual influences, especially peer social support, on underserved adolescents' PA and motivation for PA. PMID:23181920

Warm thanks: gratitude expression facilitates social affiliation in new relationships via perceived warmth.

PubMed

Williams, Lisa A; Bartlett, Monica Y

2015-02-01

Recent theorizing on the nature and function of gratitude (the find-remind-and-bind theory; Algoe, 2012) stipulates that expressing gratitude should serve to alert previously unacquainted peers to the potential for a high-quality social bond (i.e., a find function). Although the logic of this premise is supported by extant research, it has not, as yet, been tested empirically. In the current study, participants received a note from a previously unacquainted peer that contained an expression of gratitude (or did not) with regard to prior benefits provided by the participant. After providing ratings of the peer and ostensibly completing the study, participants were given an opportunity to spontaneously give their contact information to the peer, which served as a behavioral measure of affiliation. In line with the proposed find function of gratitude expressions, recipients of expressions of gratitude were more likely to extend the effort to continue the relationship with the novel peer by providing that peer with a means to contact them. This experiment also provided evidence that perceptions of interpersonal warmth (e.g., friendliness, thoughtfulness) serve as the mechanism via which gratitude expressions facilitate affiliation: insofar as gratitude expressions signaled interpersonal warmth of the expresser, they prompted investment in the burgeoning social bond. As such, these findings provide the first empirical evidence regarding 1 of the 3 central premises of the find-remind-and-bind theory of gratitude (Algoe, 2012) in the context of novel relationships. PsycINFO Database Record (c) 2015 APA, all rights reserved.

Social support and mental health among adults prior to HIV counseling and testing in Durban, South Africa.

PubMed

Drain, Paul K; Losina, Elena; Coleman, Sharon M; Bogart, Laura; Giddy, Janet; Ross, Douglas; Katz, Jeffrey N; Bassett, Ingrid V

2015-01-01

Poor social support and mental health may be important modifiable risk factors for HIV acquisition, but they have not been evaluated prior to HIV testing in South Africa. We sought to describe self-perceived mental health and social support and to characterize their independent correlates among adults who presented for voluntary HIV testing in Durban. We conducted a large cross-sectional study of adults (≥18 years of age) who presented for HIV counseling and testing between August 2010 and January 2013 in Durban, South Africa. We enrolled adults presenting for HIV testing and used the Medical Outcomes Study's Social Support Scale (0 [poor] to 100 [excellent]) and the Mental Health Inventory (MHI-3) to assess social support and mental health. We conducted independent univariate and multivariable linear regression models to determine the correlates of lower self-reported Social Support Index and lower self-reported MCH scores. Among 4874 adults surveyed prior to HIV testing, 1887 (39%) tested HIV-positive. HIV-infected participants reported less social support (mean score 66 ± 22) and worse mental health (mean score 66 ± 16), compared to HIV-negative participants (74 ± 21; 70 ± 18; p < 0.0001). In a multivariable analysis, significant correlates of less social support included presenting for HIV testing at an urban hospital, not having been tested previously, not working outside the home, and being HIV-infected. In a separate multivariable analysis, significant correlates of poor mental health were similar, but also included HIV testing at an urban hospital and being in an intimate relationship less than six months. In this study, HIV-infected adults reported poorer social support and worse mental health than HIV-negative individuals. These findings suggest that interventions to improve poor social support and mental health should be focused on adults who do not work outside the home and those with no previous HIV testing.

Genome sequencing highlights the dynamic early history of dogs.

PubMed

Freedman, Adam H; Gronau, Ilan; Schweizer, Rena M; Ortega-Del Vecchyo, Diego; Han, Eunjung; Silva, Pedro M; Galaverni, Marco; Fan, Zhenxin; Marx, Peter; Lorente-Galdos, Belen; Beale, Holly; Ramirez, Oscar; Hormozdiari, Farhad; Alkan, Can; Vilà, Carles; Squire, Kevin; Geffen, Eli; Kusak, Josip; Boyko, Adam R; Parker, Heidi G; Lee, Clarence; Tadigotla, Vasisht; Wilton, Alan; Siepel, Adam; Bustamante, Carlos D; Harkins, Timothy T; Nelson, Stanley F; Ostrander, Elaine A; Marques-Bonet, Tomas; Wayne, Robert K; Novembre, John

2014-01-01

To identify genetic changes underlying dog domestication and reconstruct their early evolutionary history, we generated high-quality genome sequences from three gray wolves, one from each of the three putative centers of dog domestication, two basal dog lineages (Basenji and Dingo) and a golden jackal as an outgroup. Analysis of these sequences supports a demographic model in which dogs and wolves diverged through a dynamic process involving population bottlenecks in both lineages and post-divergence gene flow. In dogs, the domestication bottleneck involved at least a 16-fold reduction in population size, a much more severe bottleneck than estimated previously. A sharp bottleneck in wolves occurred soon after their divergence from dogs, implying that the pool of diversity from which dogs arose was substantially larger than represented by modern wolf populations. We narrow the plausible range for the date of initial dog domestication to an interval spanning 11-16 thousand years ago, predating the rise of agriculture. In light of this finding, we expand upon previous work regarding the increase in copy number of the amylase gene (AMY2B) in dogs, which is believed to have aided digestion of starch in agricultural refuse. We find standing variation for amylase copy number variation in wolves and little or no copy number increase in the Dingo and Husky lineages. In conjunction with the estimated timing of dog origins, these results provide additional support to archaeological finds, suggesting the earliest dogs arose alongside hunter-gathers rather than agriculturists. Regarding the geographic origin of dogs, we find that, surprisingly, none of the extant wolf lineages from putative domestication centers is more closely related to dogs, and, instead, the sampled wolves form a sister monophyletic clade. This result, in combination with dog-wolf admixture during the process of domestication, suggests that a re-evaluation of past hypotheses regarding dog origins is necessary.

Genome Sequencing Highlights the Dynamic Early History of Dogs

PubMed Central

Freedman, Adam H.; Gronau, Ilan; Schweizer, Rena M.; Ortega-Del Vecchyo, Diego; Han, Eunjung; Silva, Pedro M.; Galaverni, Marco; Fan, Zhenxin; Marx, Peter; Lorente-Galdos, Belen; Beale, Holly; Ramirez, Oscar; Hormozdiari, Farhad; Alkan, Can; Vilà, Carles; Squire, Kevin; Geffen, Eli; Kusak, Josip; Boyko, Adam R.; Parker, Heidi G.; Lee, Clarence; Tadigotla, Vasisht; Siepel, Adam; Bustamante, Carlos D.; Harkins, Timothy T.; Nelson, Stanley F.; Ostrander, Elaine A.; Marques-Bonet, Tomas; Wayne, Robert K.; Novembre, John

2014-01-01

To identify genetic changes underlying dog domestication and reconstruct their early evolutionary history, we generated high-quality genome sequences from three gray wolves, one from each of the three putative centers of dog domestication, two basal dog lineages (Basenji and Dingo) and a golden jackal as an outgroup. Analysis of these sequences supports a demographic model in which dogs and wolves diverged through a dynamic process involving population bottlenecks in both lineages and post-divergence gene flow. In dogs, the domestication bottleneck involved at least a 16-fold reduction in population size, a much more severe bottleneck than estimated previously. A sharp bottleneck in wolves occurred soon after their divergence from dogs, implying that the pool of diversity from which dogs arose was substantially larger than represented by modern wolf populations. We narrow the plausible range for the date of initial dog domestication to an interval spanning 11–16 thousand years ago, predating the rise of agriculture. In light of this finding, we expand upon previous work regarding the increase in copy number of the amylase gene (AMY2B) in dogs, which is believed to have aided digestion of starch in agricultural refuse. We find standing variation for amylase copy number variation in wolves and little or no copy number increase in the Dingo and Husky lineages. In conjunction with the estimated timing of dog origins, these results provide additional support to archaeological finds, suggesting the earliest dogs arose alongside hunter-gathers rather than agriculturists. Regarding the geographic origin of dogs, we find that, surprisingly, none of the extant wolf lineages from putative domestication centers is more closely related to dogs, and, instead, the sampled wolves form a sister monophyletic clade. This result, in combination with dog-wolf admixture during the process of domestication, suggests that a re-evaluation of past hypotheses regarding dog origins is necessary. PMID:24453982

The Role of Religion and Spirituality in Psychological Distress Prior to Surgery for Urologic Cancer

PubMed Central

Biegler, Kelly; Cohen, Lorenzo; Scott, Shellie; Hitzhusen, Katherine; Parker, Patricia; Gilts, Chelsea D.; Canada, Andrea; Pisters, Louis

2013-01-01

The present study examined the associations between religion and spirituality (R/S), presurgical distress, and other psychosocial factors such as engagement coping, avoidant coping, and social support. Participants were 115 men scheduled for surgery for urologic cancer. Before surgery, participants completed scales measuring intrinsic religiosity, organized religious activity, and nonorganized religious activity (IR, ORA, NORA); social support (Medical Outcomes Study Social Support Survey); and distress (Impact of Event Scale [IES], Perceived Stress Scale [PSS], Brief Symptom Inventory-18 [BSI-18], and Profile of Mood States [POMS]). R/S was positively associated with engagement coping. Social support was positively associated with engagement coping and inversely associated with POMS and PSS scores. Engagement coping was positively associated with IES and BSI scores, and avoidant coping was positively associated with all distress measures. R/S moderated the association between engagement coping and IES scores, such that the association between engagement coping and IES was not significant for men with high R/S scores (greater religious belief). R/S moderated the association between social support and distress; the inverse association between social support and PSS and POMS scores was only significant for men who scored high on R/S. This study replicated findings from previous studies suggesting that engagement and avoidant types of coping can lead to increased distress prior to surgery. Although R/S was associated with engagement coping, it was not associated with any of the distress measures. The finding that R/S moderated the associations between engagement coping and distress and social support and distress suggests that the association between R/S, coping style, social support, and adjustment to stressful life situations is not simplistic, and indirect associations should be explored. PMID:21964511

Adults' representations of the Earth: implications for children's acquisition of scientific concepts.

PubMed

Nobes, Gavin; Panagiotaki, Georgia

2007-11-01

When children are asked to draw the Earth they often produce intriguing pictures in which, for example, people seem to be standing on a flat disc or inside a hollow sphere. These drawings, and children's answers to questions, have been interpreted as indicating that children construct naïve, theory-like mental models of the Earth (e.g. Vosniadou & Brewer, 1992). However, recent studies using different methods have found little or no evidence of these mental models, and report that many young children have some scientific knowledge of the Earth. To examine the reasons for these contrasting findings, adults (N=350) were given the drawing task previously given to 5-year-old children. Fewer than half of the adults' pictures were scientific, and 15% were identical to children's 'naïve' drawings. Up to half of the answers to questions (e.g. 'Where do people live?') were non-scientific. Open-ended questions and follow-up interviews revealed that non-scientific responses were given because adults found the apparently simple task confusing and challenging. Since children very probably find it even more difficult, these findings indicate that children's non-scientific responses, like adults', often result from methodological problems with the task. These results therefore explain the discrepant findings of previous research, and support the studies which indicate that children do not have naïve mental models of the Earth.

Dissociating Simon and affordance compatibility effects: silhouettes and photographs.

PubMed

Pappas, Zissis

2014-12-01

When a graspable object's handle is oriented to the same side as the response hand, responses are quicker and more accurate than when it is oriented to the opposite side. This effect has been attributed to the affordance of the object's handle (Tucker & Ellis, 1998). Recent findings suggest this effect results instead from an abstract spatial response code (i.e., Simon effect; Cho & Proctor, 2010). However, the stimuli used in these previous studies differ in the amount of object and environmental depth information they contain, which may be critical to conveying an affordance. This information could explain these disparate findings as well as dissociate Simon and affordance compatibility effects. Four experiments demonstrate that the Simon effect results from the absence of this information, as in a silhouette, and the affordance effect results from its presence, as in a photograph. A fifth experiment confirmed that modifying information associated with the affordance, rather than the modification itself, produced the effects observed in the previous experiments. These findings support the following: (a) the internal details of an object and environmental depth can dissociate Simon and affordance compatibility effects, (b) this information is necessary to convey the object's graspable affordance, and (c) the outer shape of the object is not sufficient to elicit an affordance effect. These findings are discussed in relation to the theory of embodied cognition. Copyright © 2014 Elsevier B.V. All rights reserved.

Weight maintenance, behaviors and barriers among previous participants of a university-based weight control program.

PubMed

Befort, C A; Stewart, E E; Smith, B K; Gibson, C A; Sullivan, D K; Donnelly, J E

2008-03-01

To examine weight loss maintenance among previous participants of a university-based behavioral weight management program and to compare behavioral strategies and perceived barriers between successful and unsuccessful maintainers. Previous program participants (n=179) completed mailed surveys assessing current weight, weight control behaviors and perceived barriers to weight loss maintenance. At 14.1+/-10.8 months following completion of treatment, survey respondents were on average 12.6+/-12.6 kg, or 11.3+/-10.7%, below baseline weight; 76.5% of respondents had successfully maintained weight, defined as maintaining a weight loss of at least 5% below baseline. Compared to unsuccessful maintainers, successful maintainers reported practicing four dietary and three physical activity weight control strategies more often and experiencing five barriers to healthy eating and exercise less often. After accounting for time since treatment and maximum weight loss while in treatment, the strongest correlates of successful weight loss maintenance were frequent exercise and perceived difficulty of weight management. Clinically meaningful weight loss maintenance was achieved by the majority of participants. Findings support the literature indicating that physical activity is one of the strongest predictors of successful weight loss maintenance. Findings also suggest that strategies to reduce the level of perceived effort required for long-term weight control may improve maintenance outcomes.

White matter microstructure in boys with persistent depressive disorder.

PubMed

Vilgis, Veronika; Vance, Alasdair; Cunnington, Ross; Silk, Timothy J

2017-10-15

Persistent depressive symptoms in children and adolescents are considered a risk factor for the development of major depressive disorder (MDD) later in life. Previous research has shown alterations in white matter microstructure in pediatric MDD but discrepancies exist as to the specific tracts affected. The current study aimed to improve upon previous methodology and address the question whether previous findings of lower fractional anisotropy (FA) replicate in a sample of children with persistent depressive disorder characterized by mild but more chronic symptoms of depression. White matter microstructure was examined in 25 boys with persistent depressive disorder and 25 typically developing children. Tract specific analysis implemented with the Diffusion Tensor Imaging - ToolKit (DTI-TK) was used to probe fractional anisotropy (FA) in eleven major white matter tracts. Clusters within the left uncinate, inferior fronto-occipital and cerebrospinal tracts showed lower FA in the clinical group. FA in the left uncinate showed a negative association with self-reported symptoms of depression. The results demonstrate lower FA in several white matter tracts in children with persistent depressive disorder. These findings support the contention that early onset depression is associated with altered white matter microstructure, which may contribute to the maintenance and recurrence of symptoms. Copyright © 2017. Published by Elsevier B.V.

Gene-centric Meta-analysis in 87,736 Individuals of European Ancestry Identifies Multiple Blood-Pressure-Related Loci

PubMed Central

Tragante, Vinicius; Barnes, Michael R.; Ganesh, Santhi K.; Lanktree, Matthew B.; Guo, Wei; Franceschini, Nora; Smith, Erin N.; Johnson, Toby; Holmes, Michael V.; Padmanabhan, Sandosh; Karczewski, Konrad J.; Almoguera, Berta; Barnard, John; Baumert, Jens; Chang, Yen-Pei Christy; Elbers, Clara C.; Farrall, Martin; Fischer, Mary E.; Gaunt, Tom R.; Gho, Johannes M.I.H.; Gieger, Christian; Goel, Anuj; Gong, Yan; Isaacs, Aaron; Kleber, Marcus E.; Leach, Irene Mateo; McDonough, Caitrin W.; Meijs, Matthijs F.L.; Melander, Olle; Nelson, Christopher P.; Nolte, Ilja M.; Pankratz, Nathan; Price, Tom S.; Shaffer, Jonathan; Shah, Sonia; Tomaszewski, Maciej; van der Most, Peter J.; Van Iperen, Erik P.A.; Vonk, Judith M.; Witkowska, Kate; Wong, Caroline O.L.; Zhang, Li; Beitelshees, Amber L.; Berenson, Gerald S.; Bhatt, Deepak L.; Brown, Morris; Burt, Amber; Cooper-DeHoff, Rhonda M.; Connell, John M.; Cruickshanks, Karen J.; Curtis, Sean P.; Davey-Smith, George; Delles, Christian; Gansevoort, Ron T.; Guo, Xiuqing; Haiqing, Shen; Hastie, Claire E.; Hofker, Marten H.; Hovingh, G. Kees; Kim, Daniel S.; Kirkland, Susan A.; Klein, Barbara E.; Klein, Ronald; Li, Yun R.; Maiwald, Steffi; Newton-Cheh, Christopher; O’Brien, Eoin T.; Onland-Moret, N. Charlotte; Palmas, Walter; Parsa, Afshin; Penninx, Brenda W.; Pettinger, Mary; Vasan, Ramachandran S.; Ranchalis, Jane E.; M Ridker, Paul; Rose, Lynda M.; Sever, Peter; Shimbo, Daichi; Steele, Laura; Stolk, Ronald P.; Thorand, Barbara; Trip, Mieke D.; van Duijn, Cornelia M.; Verschuren, W. Monique; Wijmenga, Cisca; Wyatt, Sharon; Young, J. Hunter; Zwinderman, Aeilko H.; Bezzina, Connie R.; Boerwinkle, Eric; Casas, Juan P.; Caulfield, Mark J.; Chakravarti, Aravinda; Chasman, Daniel I.; Davidson, Karina W.; Doevendans, Pieter A.; Dominiczak, Anna F.; FitzGerald, Garret A.; Gums, John G.; Fornage, Myriam; Hakonarson, Hakon; Halder, Indrani; Hillege, Hans L.; Illig, Thomas; Jarvik, Gail P.; Johnson, Julie A.; Kastelein, John J.P.; Koenig, Wolfgang; Kumari, Meena; März, Winfried; Murray, Sarah S.; O’Connell, Jeffery R.; Oldehinkel, Albertine J.; Pankow, James S.; Rader, Daniel J.; Redline, Susan; Reilly, Muredach P.; Schadt, Eric E.; Kottke-Marchant, Kandice; Snieder, Harold; Snyder, Michael; Stanton, Alice V.; Tobin, Martin D.; Uitterlinden, André G.; van der Harst, Pim; van der Schouw, Yvonne T.; Samani, Nilesh J.; Watkins, Hugh; Johnson, Andrew D.; Reiner, Alex P.; Zhu, Xiaofeng; de Bakker, Paul I.W.; Levy, Daniel; Asselbergs, Folkert W.; Munroe, Patricia B.; Keating, Brendan J.

2014-01-01

Blood pressure (BP) is a heritable risk factor for cardiovascular disease. To investigate genetic associations with systolic BP (SBP), diastolic BP (DBP), mean arterial pressure (MAP), and pulse pressure (PP), we genotyped ∼50,000 SNPs in up to 87,736 individuals of European ancestry and combined these in a meta-analysis. We replicated findings in an independent set of 68,368 individuals of European ancestry. Our analyses identified 11 previously undescribed associations in independent loci containing 31 genes including PDE1A, HLA-DQB1, CDK6, PRKAG2, VCL, H19, NUCB2, RELA, HOXC@ complex, FBN1, and NFAT5 at the Bonferroni-corrected array-wide significance threshold (p < 6 × 10−7) and confirmed 27 previously reported associations. Bioinformatic analysis of the 11 loci provided support for a putative role in hypertension of several genes, such as CDK6 and NUCB2. Analysis of potential pharmacological targets in databases of small molecules showed that ten of the genes are predicted to be a target for small molecules. In summary, we identified previously unknown loci associated with BP. Our findings extend our understanding of genes involved in BP regulation, which may provide new targets for therapeutic intervention or drug response stratification. PMID:24560520

What's eating the internet? Content and perceived harm of pro-eating disorder websites.

PubMed

Steakley-Freeman, Diana M; Jarvis-Creasey, Zachary L; Wesselmann, Eric D

2015-12-01

The internet is a popular tool for information dissemination and community building, serving many purposes from social networking to support seeking. However, there may be a downside to using some online support communities. For individuals with eating disorders (EDs), it is possible that certain online communities may reinforce the negative social aspects that encourage these disorders, rather than positive aspects that would facilitate treatment and recovery. Previous research identified several linguistic themes present on pro-eating disorder websites in an attempt to better understand the web-based conversation in the pro-eating disorder movement. We hypothesized that differences in theme presentation may predict changes in perceived harm. The present study sought to understand the perceived harm, and presentation patterns of pro-eating disorder (Pro-ED) website content. We replicated and extended previous research by having laypersons code these websites' content using previously identified linguistic themes and rate perceived harm. Our data replicate and extend the previous research by finding the same associations between co-occurring themes, and investigating associated perceived harm. We found that themes of Sacrifice, Control, Deceit, and Solidarity were associated with the highest perceived harm scores. In addition, we suggest an initial conceptualization of the "Eating Disorder Lifestyle", and its associations with the themes of Isolation, Success, and Solidarity. This research may provide clinicians with information to better understand the potential influence these sites have on eating disorders. Copyright © 2015 Elsevier Ltd. All rights reserved.

Stressors and Caregivers’ Depression: Multiple Mediators of Self-Efficacy, Social Support, and Problem-solving Skill

PubMed Central

Tang, Fengyan; Jang, Heejung; Lingler, Jennifer; Tamres, Lisa K.; Erlen, Judith A.

2016-01-01

Caring for an older adult with memory loss is stressful. Caregiver stress could produce negative outcomes such as depression. Previous research is limited in examining multiple intermediate pathways from caregiver stress to depressive symptoms. This study addresses this limitation by examining the role of self-efficacy, social support, and problem-solving in mediating the relationships between caregiver stressors and depressive symptoms. Using a sample of 91 family caregivers, we tested simultaneously multiple mediators between caregiver stressors and depression. Results indicate that self-efficacy mediated the pathway from daily hassles to depression. Findings point to the importance of improving self-efficacy in psychosocial interventions for caregivers of older adults with memory loss. PMID:26317766

A class-wide phylogenetic assessment of Dothideomycetes

PubMed Central

Schoch, C.L.; Crous, P.W.; Groenewald, J.Z.; Boehm, E.W.A.; Burgess, T.I.; de Gruyter, J.; de Hoog, G.S.; Dixon, L.J.; Grube, M.; Gueidan, C.; Harada, Y.; Hatakeyama, S.; Hirayama, K.; Hosoya, T.; Huhndorf, S.M.; Hyde, K.D.; Jones, E.B.G.; Kohlmeyer, J.; Kruys, Å.; Li, Y.M.; Lücking, R.; Lumbsch, H.T.; Marvanová, L.; Mbatchou, J.S.; McVay, A.H.; Miller, A.N.; Mugambi, G.K.; Muggia, L.; Nelsen, M.P.; Nelson, P.; Owensby, C A.; Phillips, A.J.L.; Phongpaichit, S.; Pointing, S.B.; Pujade-Renaud, V.; Raja, H.A.; Plata, E. Rivas; Robbertse, B.; Ruibal, C.; Sakayaroj, J.; Sano, T.; Selbmann, L.; Shearer, C.A.; Shirouzu, T.; Slippers, B.; Suetrong, S.; Tanaka, K.; Volkmann-Kohlmeyer, B.; Wingfield, M.J.; Wood, A.R.; Woudenberg, J.H.C.; Yonezawa, H.; Zhang, Y.; Spatafora, J.W.

2009-01-01

We present a comprehensive phylogeny derived from 5 genes, nucSSU, nucLSU rDNA, TEF1, RPB1 and RPB2, for 356 isolates and 41 families (six newly described in this volume) in Dothideomycetes. All currently accepted orders in the class are represented for the first time in addition to numerous previously unplaced lineages. Subclass Pleosporomycetidae is expanded to include the aquatic order Jahnulales. An ancestral reconstruction of basic nutritional modes supports numerous transitions from saprobic life histories to plant associated and lichenised modes and a transition from terrestrial to aquatic habitats are confirmed. Finally, a genomic comparison of 6 dothideomycete genomes with other fungi finds a high level of unique protein associated with the class, supporting its delineation as a separate taxon. PMID:20169021

A Tri-network Model of Human Semantic Processing

PubMed Central

Xu, Yangwen; He, Yong; Bi, Yanchao

2017-01-01

Humans process the meaning of the world via both verbal and nonverbal modalities. It has been established that widely distributed cortical regions are involved in semantic processing, yet the global wiring pattern of this brain system has not been considered in the current neurocognitive semantic models. We review evidence from the brain-network perspective, which shows that the semantic system is topologically segregated into three brain modules. Revisiting previous region-based evidence in light of these new network findings, we postulate that these three modules support multimodal experiential representation, language-supported representation, and semantic control. A tri-network neurocognitive model of semantic processing is proposed, which generates new hypotheses regarding the network basis of different types of semantic processes. PMID:28955266

Benefits and risks of shared services in healthcare.

PubMed

Kennewell, Suzanne; Baker, Laura

2016-05-16

Purpose - The purpose of this paper is to explore the experiences of staff in a large, public health service involved in transitioning support services to a shared services model. It aims to understand their perceptions of the benefits and risks arising from this change. Design/methodology/approach - Thematic analysis of qualitative data from semi-structured interviews with both service provider and customer agency staff was used to identify, analyze and report patterns of benefits and risks within data. Findings - Staff expressed the need for relevant subject-matter-experts to work within customer agencies to facilitate effective communication between the customer agency and shared services provider, reflecting observations found in out-sourcing literature. Research limitations/implications - Results point to significant challenges continuing to occur for shared services in healthcare. Risks identified suggest a more intimate relationship between clinical and support services than previously discussed. Originality/value - Previous discussion of the shared services model has not considered the skills, knowledge and ability required by staff in the customer agency. This research indicates that in the absence of such consideration, the concepts of the shared services model are weakened.

Clinical supervision, emotional exhaustion, and turnover intention: A study of substance abuse treatment counselors in NIDA’s Clinical Trials Network

PubMed Central

Knudsen, Hannah K.; Ducharme, Lori J.; Roman, Paul M

2008-01-01

An intriguing hypothesis is that clinical supervision may protect against counselor turnover. This idea has been mentioned in recent discussions of the substance abuse treatment workforce. To test this hypothesis, we extend our previous research on emotional exhaustion and turnover intention among counselors by estimating the associations between clinical supervision and these variables in a large sample (n = 823). An exploratory analysis reveals that clinical supervision was negatively associated with emotional exhaustion and turnover intention. Given our previous findings that emotional exhaustion and turnover intention were associated with job autonomy, procedural justice, and distributive justice, we estimate a structural equation model to examine whether these variables mediated clinical supervision’s associations with emotional exhaustion and turnover intention. These data support the fully mediated model. We found the perceived quality of clinical supervision is strongly associated with counselors’ perceptions of job autonomy, procedural justice, and distributive justice, which are, in turn, associated with emotional exhaustion and turnover intention. These data offer support for the protective role of clinical supervision in substance abuse treatment counselors’ turnover and occupational wellbeing. PMID:18424048

Exploring nurse preceptors' perceptions of benefits and support of and commitment to the preceptor role in the Western Cape Province.

PubMed

Cloete, Inez S; Jeggels, June

2014-10-09

A preceptor is a specialised tutor who provides practical training to students in the practice setting. They are frequently used to orientate nursing students to prepare them for their duties as professional nurses. In the Western Cape Province professional nurses attend a training programme to prepare them for the role of preceptor. After completion of the training it is unclear how the trained nurse preceptors perceive their preparation for the role. The perceptions of preceptors may influence their commitment to their role. The purpose of this study was to explore nurse preceptors' perceptions of benefits, support and commitment to the preceptor role. A conceptual framework guided the study which replicated previous studies that explored nurse preceptors' perceptions. A quantitative approach utilising a descriptive correlational design was used in this study to address the research questions. A convenience sample was drawn from preceptors (n = 60) who had completed a preceptor training programme at the University of the Western Cape. Instrumentation for the study included the following scales: preceptors' perceptions of benefits and rewards, preceptors' perceptions of support, and commitment to the preceptor role. Data analysis was performed using SPSS 20.0. The findings indicate that nurse preceptors were committed to their role. The findings of this study are supported by Kanter's model of structural determinants of behaviour in organisations, since preceptors who see themselves as having access to opportunity and support are likely to be committed to their role.

Striving for meaning-Life in supported housing for people with psychiatric disabilities.

PubMed

Brolin, Rosita; Brunt, David; Rask, Mikael; Syrén, Susanne; Sandgren, Anna

2016-01-01

The aim of this study was to develop a grounded theory about people with psychiatric disabilities, living in supported housing. Interviews as well as observations during the interviews were analyzed together with secondary analyses of quantitative and qualitative material from previous studies. Being deprived of self-determination emerged as the main concern for residents in supported housing and striving for meaning emerged as the pattern of behavior through which this group resolves their main concern. Striving for meaning involves living in the present, striving for self-determination, strengthening self-esteem, emotional processing and resting from the present. The strategies facilitate each other and are used singly, together simultaneously, or alternately. If they are successful, a meaning in the present is perceived. If all the strategies fail repeatedly, escaping from the present is used in order to deal with being deprived of self-determination. The implications of the findings suggest prioritizing a reduction of the institutional nature of the social and physical environment, and to support the residents' self-determination.

Striving for meaning—Life in supported housing for people with psychiatric disabilities

PubMed Central

Brolin, Rosita; Brunt, David; Rask, Mikael; Syrén, Susanne; Sandgren, Anna

2016-01-01

The aim of this study was to develop a grounded theory about people with psychiatric disabilities, living in supported housing. Interviews as well as observations during the interviews were analyzed together with secondary analyses of quantitative and qualitative material from previous studies. Being deprived of self-determination emerged as the main concern for residents in supported housing and striving for meaning emerged as the pattern of behavior through which this group resolves their main concern. Striving for meaning involves living in the present, striving for self-determination, strengthening self-esteem, emotional processing and resting from the present. The strategies facilitate each other and are used singly, together simultaneously, or alternately. If they are successful, a meaning in the present is perceived. If all the strategies fail repeatedly, escaping from the present is used in order to deal with being deprived of self-determination. The implications of the findings suggest prioritizing a reduction of the institutional nature of the social and physical environment, and to support the residents’ self-determination. PMID:27172517

Turbulent convection in geostrophic circulation with wind and buoyancy forcing

NASA Astrophysics Data System (ADS)

Sohail, Taimoor; Gayen, Bishakhdatta; Hogg, Andy

2017-11-01

We conduct a direct numerical simulation of geostrophic circulation forced by surface wind and buoyancy to model a circumpolar ocean. The imposed buoyancy forcing (represented by Rayleigh number) drives a zonal current and supports small-scale convection in the buoyancy destabilizing region. In addition, we observe eddy activity which transports heat southward, supporting a large amount of heat uptake. Increasing wind stress enhances the meridional buoyancy gradient, triggering more eddy activity inside the boundary layer. Therefore, heat uptake increases with higher wind stress. The majority of dissipation is confined within the surface boundary layer, while mixing is dominant inside the convective plume and the buoyancy destabilizing region of the domain. The relative strength of the mixing and dissipation in the system can be expressed by mixing efficiency. This study finds that mixing is much greater than viscous dissipation, resulting in higher values of mixing efficiency than previously used. Supported by Australian Research Council Grant DP140103706.

Women's experiences of coping with pregnancy termination for fetal abnormality.

PubMed

Lafarge, Caroline; Mitchell, Kathryn; Fox, Pauline

2013-07-01

Pregnancy termination for fetal abnormality (TFA) can have significant psychological consequences. Most previous research has been focused on measuring the psychological outcomes of TFA, and little is known about the coping strategies involved. In this article, we report on women's coping strategies used during and after the procedure. Our account is based on experiences of 27 women who completed an online survey. We analyzed the data using interpretative phenomenological analysis. Coping comprised four structures, consistent across time points: support, acceptance, avoidance, and meaning attribution. Women mostly used adaptive coping strategies but reported inadequacies in aftercare, which challenged their resources. The study's findings indicate the need to provide sensitive, nondirective care rooted in the acknowledgment of the unique nature of TFA. Enabling women to reciprocate for emotional support, promoting adaptive coping strategies, highlighting the potential value of spending time with the baby, and providing long-term support (including during subsequent pregnancies) might promote psychological adjustment to TFA.

The JCMT Gould Belt Survey: first results from the SCUBA-2 observations of the Ophiuchus molecular cloud and a virial analysis of its prestellar core population

NASA Astrophysics Data System (ADS)

Pattle, K.; Ward-Thompson, D.; Kirk, J. M.; White, G. J.; Drabek-Maunder, E.; Buckle, J.; Beaulieu, S. F.; Berry, D. S.; Broekhoven-Fiene, H.; Currie, M. J.; Fich, M.; Hatchell, J.; Kirk, H.; Jenness, T.; Johnstone, D.; Mottram, J. C.; Nutter, D.; Pineda, J. E.; Quinn, C.; Salji, C.; Tisi, S.; Walker-Smith, S.; di Francesco, J.; Hogerheijde, M. R.; André, Ph.; Bastien, P.; Bresnahan, D.; Butner, H.; Chen, M.; Chrysostomou, A.; Coude, S.; Davis, C. J.; Duarte-Cabral, A.; Fiege, J.; Friberg, P.; Friesen, R.; Fuller, G. A.; Graves, S.; Greaves, J.; Gregson, J.; Griffin, M. J.; Holland, W.; Joncas, G.; Knee, L. B. G.; Könyves, V.; Mairs, S.; Marsh, K.; Matthews, B. C.; Moriarty-Schieven, G.; Rawlings, J.; Richer, J.; Robertson, D.; Rosolowsky, E.; Rumble, D.; Sadavoy, S.; Spinoglio, L.; Thomas, H.; Tothill, N.; Viti, S.; Wouterloot, J.; Yates, J.; Zhu, M.

2015-06-01

In this paper, we present the first observations of the Ophiuchus molecular cloud performed as part of the James Clerk Maxwell Telescope (JCMT) Gould Belt Survey (GBS) with the SCUBA-2 instrument. We demonstrate methods for combining these data with previous HARP CO, Herschel, and IRAM N2H+ observations in order to accurately quantify the properties of the SCUBA-2 sources in Ophiuchus. We produce a catalogue of all of the sources found by SCUBA-2. We separate these into protostars and starless cores. We list all of the starless cores and perform a full virial analysis, including external pressure. This is the first time that external pressure has been included in this level of detail. We find that the majority of our cores are either bound or virialized. Gravitational energy and external pressure are on average of a similar order of magnitude, but with some variation from region to region. We find that cores in the Oph A region are gravitationally bound prestellar cores, while cores in the Oph C and E regions are pressure-confined. We determine that N2H+ is a good tracer of the bound material of prestellar cores, although we find some evidence for N2H+ freeze-out at the very highest core densities. We find that non-thermal linewidths decrease substantially between the gas traced by C18O and that traced by N2H+, indicating the dissipation of turbulence at higher densities. We find that the critical Bonnor-Ebert stability criterion is not a good indicator of the boundedness of our cores. We detect the pre-brown dwarf candidate Oph B-11 and find a flux density and mass consistent with previous work. We discuss regional variations in the nature of the cores and find further support for our previous hypothesis of a global evolutionary gradient across the cloud from south-west to north-east, indicating sequential star formation across the region.

Prediction of enjoyment in school physical education.

PubMed

Gråstén, Arto; Jaakkola, Timo; Liukkonen, Jarmo; Watt, Anthony; Yli-Piipari, Sami

2012-01-01

The specific aim of this study was to examine whether motivational climate, perceived physical competence, and exercise motivation predict enjoyment in school physical education within the same sample of adolescents across three years of secondary school. A sample of 639 students (girls = 296, boys = 343) aged between 13- to 15-years at the commencement of the study completed the Intrinsic Motivation Climate in Physical Education Questionnaire, Physical Self-Perception Profile, Physical Education Motivation Scale, and Physical Education Enjoyment Scale. Results derived from path analyses indicated that task-involving motivational climate predicted enjoyment in physical education via perceived physical competence and intrinsic motivation in both girls and boys. In particular, these results supported previous findings of Vallerand et. al (1997) with the self-determination theory and the achievement goal theory. Ego-involving climate was not a significant predictor either in girls or boys. The current results provide continuing support for the investigation of Vallerand's model in the physical education setting, and highlight that motivational climate is an area that requires further evaluation as a contributing factor in the improvement of physical education teaching. A better understanding of the role of motivational climate may assist efforts to promote children's and adolescents' perceived physical competence, intrinsic motivation, and enjoyment in the school physical education setting. Key pointsThe findings of the current study support existing suggestions of Vallerand's (1997) model in which social factors mediated by a psychological mediator, and exercise motivation are related to positive consequences in the PE context.Task-involving motivational climate predicted PE enjoyment via perceived physical competence and intrinsic motivation with both girls and boys. Task-involving motivational climate in PE lessons at Grade 7 had a strong association with PE enjoyment via perceived physical competence and intrinsic motivation at Grade 9 for both girls and boys.Ego-involving climate did not fit either the data for the girls or boys, as PE lessons based on ego-involving motivational climate did not significantly influence on the level of PE enjoyment.The results of the current study and previous practical findings support task-involving teaching methods to promote adolescent's PE enjoyment through secondary school years. School PE could be most effective if based on task-involving motivational climate, in which the main objective is increasing students' perceived physical competence, intrinsic motivation, and enjoyment.

The social support and social network characteristics of smokers in methadone maintenance treatment.

PubMed

de Dios, Marcel Alejandro; Stanton, Cassandra A; Caviness, Celeste M; Niaura, Raymond; Stein, Michael

2013-01-01

Previous studies have shown social support and social network variables to be important factors in smoking cessation treatment. Tobacco use is highly prevalent among individuals in methadone maintenance treatment (MMT). However, smoking cessation treatment outcomes in this vulnerable subpopulation have been poor and social support and social network variables may contribute. The current study examined the social support and social network characteristics of 151 MMT smokers involved in a randomized clinical trial of smoking cessation treatments. Participants were 50% women and 78% Caucasian. A high proportion (57%) of MMT smokers had spouses or partners who smoke and over two-thirds of households (68.5%) included at least one smoker. Our sample was characterized by relatively small social networks, but high levels of general social support and quitting support. The number of cigarettes per day was found to be positively associated with the number of smokers in the social network (r = .239, p < .05) and quitting self-efficacy was negatively associated with partner smoking (r = -.217, p < .001). Findings are discussed in the context of developing smoking cessation interventions that address the influential role of social support and social networks of smokers in MMT.

Does better taxon sampling help? A new phylogenetic hypothesis for Sepsidae (Diptera: Cyclorrhapha) based on 50 new taxa and the same old mitochondrial and nuclear markers.

PubMed

Zhao, Lei; Annie, Ang Shi Hui; Amrita, Srivathsan; Yi, Su Kathy Feng; Rudolf, Meier

2013-10-01

We here present a phylogenetic hypothesis for Sepsidae (Diptera: Cyclorrhapha), a group of schizophoran flies with ca. 320 described species that is widely used in sexual selection research. The hypothesis is based on five nuclear and five mitochondrial markers totaling 8813 bp for ca. 30% of the diversity (105 sepsid taxa) and - depending on analysis - six or nine outgroup species. Maximum parsimony (MP), maximum likelihood (ML), and Bayesian inferences (BI) yield overall congruent, well-resolved, and supported trees that are largely unaffected by three different ways to partition the data in BI and ML analyses. However, there are also five areas of uncertainty that affect suprageneric relationships where different analyses yield alternate topologies and MP and ML trees have significant conflict according to Shimodaira-Hasegawa tests. Two of these were already affected by conflict in a previous analysis that was based on the same genes and a subset of 69 species. The remaining three involve newly added taxa or genera whose relationships were previously resolved with low support. We thus find that the denser taxon sample in the present analysis does not reduce the topological conflict that had been identified previously. The present study nevertheless presents a significant contribution to the understanding of sepsid relationships in that 50 additional taxa from 18 genera are added to the Tree-of-Life of Sepsidae and that the placement of most taxa is well supported and robust to different tree reconstruction techniques. Copyright © 2013 Elsevier Inc. All rights reserved.

Social support and mental health among adults prior to HIV counseling and testing in Durban, South Africa

PubMed Central

Drain, Paul K; Losina, Elena; Coleman, Sharon M; Bogart, Laura; Giddy, Janet; Ross, Douglas; Katz, Jeffrey N; Bassett, Ingrid V

2015-01-01

Poor social support and mental health may be important modifiable risk factors for HIV acquisition, but they have not been evaluated prior to HIV testing in South Africa. We sought to describe self-perceived mental health and social support and to characterize their independent correlates among adults who presented for voluntary HIV testing in Durban. We conducted a large cross-sectional study of adults (≥18 years of age) who presented for HIV counseling and testing between August 2010 and January 2013 in Durban, South Africa. We enrolled adults presenting for HIV testing and used the Medical Outcomes Study’s Social Support Scale [0 (poor) to 100 (excellent)] and the Mental Health Inventory (MHI-3) to assess social support and mental health. We conducted independent univariate and multivariable linear regression models to determine the correlates of lower self-reported SSI and lower self-reported MCH scores. Among 4,874 adults surveyed prior to HIV testing, 1,887 (39%) tested HIV-positive. HIV-infected participants reported less social support (mean score 66 ±22) and worse mental health (mean score 66 ±16), compared to HIV-negative participants (74 ±21; 70 ±18) (p-values <0.0001). In a multivariable analysis, significant correlates of less social support included presenting for HIV testing at an urban hospital, not having been tested previously, not working outside the home, and being HIV-infected. In a separate multivariable analysis, significant correlates of poor mental health were similar, but also included HIV testing at an urban hospital and being in an intimate relationship less than 6 months. In this study, HIV-infected adults reported poorer social support and worse mental health than HIV-negative individuals. These findings suggest that interventions to improve poor social support and mental health should be focused on adults who do not work outside the home and those with no previous HIV testing. PMID:26213142

The Family Socialization Interview-Revised (FSI-R): a Comprehensive Assessment of Parental Disciplinary Behaviors.

PubMed

O'Dor, Sarah L; Grasso, Damion J; Forbes, Danielle; Bates, John E; McCarthy, Kimberly J; Wakschlag, Lauren S; Briggs-Gowan, Margaret J

2017-04-01

Elucidating the complex mechanisms by which harsh parenting increases risk of child psychopathology is key to targeted prevention. This requires nuanced methods that capture the varied perceptions and experiences of diverse families. The Family Socialization Interview-Revised (FSI-R), adapted from an interview developed by Dodge et al. (Child Development, 65, 649-665, 1994), is a comprehensive, semi-structured interview for characterizing methods of parental discipline used with young children. The FSI-R coding system systematically rates parenting style, usual discipline techniques, and most intense physical and psychological discipline based on rater judgment across two eras: (1) birth to the previous year, and (2) the previous year to present. The current study examined the psychometric properties of the FSI-R in a diverse, high-risk community sample of 386 mothers and their children, ages 3 to 6 years. Interrater reliability was good to excellent for codes capturing physically and psychologically harsh parenting, and restrictive/punitive parenting styles. Findings supported the FSI-R's convergent and incremental validity. Importantly, the FSI-R demonstrated incremental utility, explaining unique variance in children's externalizing and internalizing symptoms beyond that explained by traditional surveys and observed parenting. The FSI-R appeared particularly promising for capturing risk associated with young children's depressive symptoms, as these were generally not significantly associated with other measures of harsh parenting. Overall, findings support the added value of the FSI-R within a multi-method assessment of disciplinary practices across early child development. Future implications for prevention are discussed.

Writing Chinese and mathematics achievement: A study with Chinese-American undergraduates

NASA Astrophysics Data System (ADS)

Li, Chieh; Nuttall, Ronald

2001-04-01

Two recent studies indicated that writing Chinese is correlated to Chinese-American (CA) students' spatial skills. The current study investigated whether writing Chinese would have the same relationship to mathematics skills. The Scholastic Assessment Test—Mathematics (SAT-Math) scores were analysed for 150 CA undergraduates: 42 writers of Chinese and 108 non-writers of Chinese. The results suggested a strong correlation between writing Chinese and success on SAT-Math. An underlying mechanism may be the common cognitive components that encompass writing Chinese, spatial tasks, and SAT-Math. Contrary to previous findings with other populations in the USA, CA females scored slightly higher on SAT-Math than males. The finding supports the cultural relativity theory of gender difference on SAT-Math.

Carcinoma of the Lung in Nonsmoking Chinese Women

PubMed Central

Green, Jerold P.; Brophy, Pegi

1982-01-01

The records of 452 lung cancer patients seen in San Francisco between 1972 and 1979 were retrospectively analyzed according to race, sex, findings at histology and smoking history. Of 31 Chinese women with adenocarcinoma or large cell undifferentiated carcinoma, 20 (64.5 percent) had never smoked, which is in sharp contrast to all other subsets. At least 12 of the women were of Cantonese origin. These data support the findings of previous studies carried out in Cantonese women residing in Hong Kong, Singapore and Hawaii. As the incidence of adenocarcinoma in nonsmokers is appreciably higher than that noted in Canton, the possibility must be considered that the cause may be the result of an interaction between some traditional and nontraditional exposures. PMID:6283744

Relations of children's proactive and reactive assertiveness to peer acceptance: moderating effects of social interest.

PubMed

Lee, Han-Jong

2014-06-01

Previous studies on the social outcome of assertiveness reported mixed findings, failing to support the assumption that assertiveness promotes peer acceptance. In an attempt to provide explanations for the inconsistencies in prior findings, this study proposed making a distinction between proactive and reactive assertiveness and examined the moderating effects of social interest. A total of 441 fifth and sixth graders (232 boys, 209 girls; M age = 10.6 yr., SD = 0.6) participated in the study. Results indicated that proactive assertiveness was positively related to peer acceptance regardless of social interest. By contrast, reactive assertiveness was positively related to peer acceptance but only when social interest is high. When social interest is low, it was negatively associated with peer acceptance.

Framing effect debiasing in medical decision making.

PubMed

Almashat, Sammy; Ayotte, Brian; Edelstein, Barry; Margrett, Jennifer

2008-04-01

Numerous studies have demonstrated the robustness of the framing effect in a variety of contexts. The present study investigated the effects of a debiasing procedure designed to prevent the framing effect for young adults who made decisions based on hypothetical medical decision-making vignettes. The debiasing technique involved participants listing advantages and disadvantages of each treatment prior to making a choice. One hundred and two undergraduate students read a set of three medical treatment vignettes that presented information in terms of different outcome probabilities under either debiasing or control conditions. The framing effect was demonstrated by the control group in two of the three vignettes. The debiasing group successfully avoided the framing effect for both of these vignettes. These results further support previous findings of the framing effect as well as an effective debiasing technique. This study improved upon previous framing debiasing studies by including a control group and personal medical scenarios, as well as demonstrating debiasing in a framing condition in which the framing effect was demonstrated without a debiasing procedure. The findings suggest a relatively simple manipulation may circumvent the use of decision-making heuristics in patients.

Perceptual integration of acoustic cues to laryngeal contrasts in Korean fricatives.

PubMed

Lee, Sarah; Katz, Jonah

2016-02-01

This paper provides evidence that multiple acoustic cues involving the presence of low-frequency energy integrate in the perception of Korean coronal fricatives. This finding helps explain a surprising asymmetry between the production and perception of these fricatives found in previous studies: lower F0 onset in the following vowel leads to a response bias for plain [s] over fortis [s*], despite the fact that there is no evidence for a corresponding acoustic asymmetry in the production of [s] and [s*]. A fixed classification task using the Garner paradigm provides evidence that low F0 in a following vowel and the presence of voicing during frication perceptually integrate. This suggests that Korean listeners in previous experiments were responding to an "intermediate perceptual property" of stimuli, despite the fact that the individual acoustic components of that property are not all present in typical Korean fricative productions. The finding also broadens empirical support for the general idea of perceptual integration to a language, a different manner of consonant, and a situation where covariance of the acoustic cues under investigation is not generally present in a listener's linguistic input.

Perceived control moderates the relationship between social capital and binge drinking: longitudinal findings from the Montreal Neighborhood Networks and Health Aging (MoNNET-HA) panel.

PubMed

Child, Stephanie; Stewart, Steven; Moore, Spencer

2017-02-01

Cross-sectional research suggests social capital has negative consequences for problem drinking behaviors. Previous studies have suggested psychosocial resources, including perceived control, may buffer this association. Little research has examined whether such relationships persist longitudinally. Random effects models examined between-person relationships among problem drinking, social capital, and perceived control, and whether perceived control moderated the relationship between social capital and drinking. Fixed effects models assessed whether social capital and perceived control were related to changes in problem drinking. Greater network capital and generalized trust predicted higher odds of binge drinking (RR = 1.08; 95% CI = 1.03-1.12 and RR = 1.23; 95% CI = 1.03-1.48, respectively). Perceived control moderated the positive association of network capital with binge drinking (RR = 0.91; 95% CI = 0.87-0.96). The present findings support previous notions about the complex role of social capital on health, and offer new insights on the role of perceived control on problem drinking. Copyright © 2016 Elsevier Inc. All rights reserved.

Whole genome sequences of two octogenarians with sustained cognitive abilities

PubMed Central

Nickles, Dorothee; Madireddy, Lohith; Patel, Nihar; Isobe, Noriko; Miller, Bruce L.; Baranzini, Sergio E.; Kramer, Joel H.; Oksenberg, Jorge R.

2014-01-01

Although numerous genetic variants affecting aging and mortality have been identified, e.g. APOE ε4, the genetic component influencing cognitive aging has not been fully defined yet. A better knowledge of the genetics of aging will prove helpful in understanding the underlying biological processes. Here, we describe the whole genome sequences of two female octogenarians. We provide the repertoire of genomic variants that the two octogenarians have in common. We also describe the overlap with the previously reported genomes of two supercentenarians - individuals aged ≥ 110 years. We assessed the genetic disease propensities of the octogenarians and non-aged control genomes and could not find support for the hypothesis that long-lived healthy individuals might exhibit greater genetic fitness than the general population. Furthermore, there is no evidence for an accumulation of previously described variants promoting longevity in the two octogenarians. These findings suggest that genetic fitness, as currently defined, is not the sole factor enabling an increased lifespan. We identified a number of healthy-cognitive-aging candidate genetic loci awaiting confirmation in larger studies. PMID:25618617

Whole genome sequences of 2 octogenarians with sustained cognitive abilities.

PubMed

Nickles, Dorothee; Madireddy, Lohith; Patel, Nihar; Isobe, Noriko; Miller, Bruce L; Baranzini, Sergio E; Kramer, Joel H; Oksenberg, Jorge R

2015-03-01

Although numerous genetic variants affecting aging and mortality have been identified, for example, apolipoprotein E ε4, the genetic component influencing cognitive aging has not been fully defined yet. A better knowledge of the genetics of aging will prove helpful in understanding the underlying biological processes. Here, we describe the whole genome sequences of 2 female octogenarians. We provide the repertoire of genomic variants that the 2 octogenarians have in common. We also describe the overlap with the previously reported genomes of 2 supercentenarians—individuals aged ≥110 years. We assessed the genetic disease propensities of the octogenarians and non-aged control genomes and could not find support for the hypothesis that long-lived healthy individuals might exhibit greater genetic fitness than the general population. Furthermore, there is no evidence for an accumulation of previously described variants promoting longevity in the 2 octogenarians. These findings suggest that genetic fitness, as currently defined, is not the sole factor enabling an increased life span. We identified a number of healthy-cognitive-aging candidate genetic loci awaiting confirmation in larger studies. Copyright © 2015 Elsevier Inc. All rights reserved.

Dynamic Modulation of Human Motor Activity When Observing Actions

PubMed Central

Press, Clare; Cook, Jennifer; Blakemore, Sarah-Jayne; Kilner, James

2012-01-01

Previous studies have demonstrated that when we observe somebody else executing an action many areas of our own motor systems are active. It has been argued that these motor activations are evidence that we motorically simulate observed actions; this motoric simulation may support various functions such as imitation and action understanding. However, whether motoric simulation is indeed the function of motor activations during action observation is controversial, due to inconsistency in findings. Previous studies have demonstrated dynamic modulations in motor activity when we execute actions. Therefore, if we do motorically simulate observed actions, our motor systems should also be modulated dynamically, and in a corresponding fashion, during action observation. Using magnetoencephalography, we recorded the cortical activity of human participants while they observed actions performed by another person. Here, we show that activity in the human motor system is indeed modulated dynamically during action observation. The finding that activity in the motor system is modulated dynamically when observing actions can explain why studies of action observation using functional magnetic resonance imaging have reported conflicting results, and is consistent with the hypothesis that we motorically simulate observed actions. PMID:21414901

Conditions that Stabilize Membrane Domains Also Antagonize n-Alcohol Anesthesia

NASA Astrophysics Data System (ADS)

Machta, Benjamin B.; Gray, Ellyn; Nouri, Mariam; McCarthy, Nicola L. C.; Gray, Erin M.; Miller, Ann L.; Brooks, Nicholas J.; Veatch, Sarah L.

2016-08-01

Diverse molecules induce general anesthesia with potency strongly correlated both with their hydrophobicity and their effects on certain ion channels. We recently observed that several n-alcohol anesthetics inhibit heterogeneity in plasma membrane derived vesicles by lowering the critical temperature ($T_c$) for phase separation. Here we exploit conditions that stabilize membrane heterogeneity to further test the correlation between the anesthetic potency of n-alcohols and effects on $T_c$. First we show that hexadecanol acts oppositely to n-alcohol anesthetics on membrane mixing and antagonizes ethanol induced anesthesia in a tadpole behavioral assay. Second, we show that two previously described `intoxication reversers' raise $T_c$ and counter ethanol's effects in vesicles, mimicking the findings of previous electrophysiological and behavioral measurements. Third, we find that hydrostatic pressure, long known to reverse anesthesia, also raises $T_c$ in vesicles with a magnitude that counters the effect of butanol at relevant concentrations and pressures. Taken together, these results demonstrate that $\\Delta T_c$ predicts anesthetic potency for n-alcohols better than hydrophobicity in a range of contexts, supporting a mechanistic role for membrane heterogeneity in general anesthesia.

Cumulative Trauma and Adjustment in Women Exposed to a Campus Shooting: Examining the Role of Appraisals and Social Support.

PubMed

Boykin, Derrecka M; Dunn, Qweandria T; Orcutt, Holly K

2017-05-01

Experiencing repeated trauma can have increasingly detrimental effects on psychosocial functioning after subsequent stressors. These effects may be intensified for victims of interpersonal traumas given that these events are often associated with heightened risk for adverse outcomes. To better understand this relationship, the present study prospectively examined the effect of pre-shooting trauma exposure (i.e., interpersonal vs. non-interpersonal trauma) on psychological functioning (i.e., posttraumatic stress symptoms, depression) following a mass campus shooting. Based on previous research, it was expected that negative appraisals and social support would mediate this relationship. A sample of 515 college women reporting prior trauma exposure was assessed at four time points following the shooting (i.e., pre-shooting, 1-month, 6-months, and 12-months post-shooting). Bootstrap analyses with bias-corrected confidence intervals were conducted. Contrary to expectation, pre-shooting trauma exposure was unrelated to 12-month post-shooting outcomes and neither negative appraisals nor social support at 6-months post-shooting emerged as mediators. Interestingly, a history of non-interpersonal trauma was associated with greater post-shooting family and friend support than a history of interpersonal trauma. Ad hoc analyses showed that pre-shooting symptom severity and level of exposure to the shooting had indirect effects on post-shooting outcomes via post-shooting negative appraisals. These findings support that cumulative trauma, regardless of type, may not have an additive effect unless individuals develop clinically significant symptoms following previous trauma. Trauma severity also appears to play a meaningful role.

Smoke and mirrors: Testing the scope of chimpanzees’ appearance-reality understanding

PubMed Central

Lurz, Robert; Russell, Jamie L.; Hopkins, William D.

2016-01-01

The ability to make appearance-reality (AR) discriminations is an important higher-order cognitive adaptation in humans but is still poorly understood in our closest primate relatives. Previous research showed that chimpanzees are capable of AR discrimination when choosing between food items that appear, due to the effects of distorting lenses, to be smaller or larger than they actually are (Krachun, Call & Tomasello, 2009). In the current study, we investigated the scope and flexibility of chimpanzees’ AR discrimination abilities by presenting them with a wider range of illusory stimuli. In addition to using lenses to change the apparent size of food items (Experiment 1), we used a mirror to change the apparent number of items (Experiment 2), and tinted filters to change their apparent color (Experiment 3). In all three experiments, some chimpanzees were able to maximize their food rewards by making a choice based on the real properties of the stimuli in contrast to their manifest apparent properties. These results replicate the earlier findings for size illusions and extend them to additional situations involving illusory number and color. Control tests, together with findings from previous studies, ruled out lower-level explanations for the chimpanzees’ performance. The findings thus support the hypothesis that chimpanzees are capable of making AR discriminations with a range of illusory stimuli. PMID:26848736

Impairment in flexible emotion-based learning in hallucination- and delusion-prone individuals.

PubMed

Cella, Matteo; Dymond, Simon; Cooper, Andrew

2009-11-30

Deficits in emotion-based learning are implicated in many psychiatric disorders. Research conducted with patients with schizophrenia using one of the most popular tasks for the investigation of emotion-based learning, the Iowa Gambling Task (IGT), has largely been inconclusive. The present study employed a novel, contingency-shifting variant IGT with hallucination- and delusion-prone university students to determine whether previous findings were due merely to the presence of psychosis. Following initial screening of a sample of 253 students (mean age = 20.13 years, S.D. = 3.27), 28 high (10 male, 18 female) and 27 low (12 male, 15 female) hallucination-prone and 27 high (7 male, 20 female) and 26 low (11 male, 15 female) delusion-prone individuals completed the contingency-shifting variant IGT. Results showed no significant differences between the performances of high and low hallucination- and delusion-prone individuals during the original phase of the task. Differences only emerged following the onset of the contingency-shift phases, with individuals high in hallucination- and delusion-proneness having impaired performance compared with low hallucination- and delusion-prone individuals. Overall, the present findings demonstrate that impairments associated with hallucination- and delusion-proneness are specific to the shift phase of the contingency-shifting variant IGT, which supports previous findings with patients with schizophrenia.

Phylogenetic and population-based approaches to mitogenome variation do not support association with male infertility.

PubMed

Gómez-Carballa, Alberto; Pardo-Seco, Jacobo; Martinón-Torres, Federico; Salas, Antonio

2017-03-01

Infertility has a complex multifactorial etiology and a high prevalence worldwide. Several studies have pointed to variation in the mitochondrial DNA (mtDNA) molecule as a factor responsible for the different disease phenotypes related to infertility. We analyzed 53 mitogenomes of infertile males from Galicia (northwest Spain), and these haplotypes were meta-analyzed phylogenetically with 43 previously reported from Portugal. Taking advantage of the large amount of information available, we additionally carried out association tests between patient mtDNA single-nucleotide polymorphisms (mtSNPs) and haplogroups against Iberian matched controls retrieved from The 1000 Genomes Project and the literature. Phylogenetic and association analyses did not reveal evidence of association between mtSNPs/haplogroups and infertility. Ratios and patterns in patients of nonsynonymous/synonymous changes, and variation at homoplasmic, heteroplasmic and private variants, fall within expected values for healthy individuals. Moreover, the haplogroup background of patients was variable and fits well with patterns typically observed in healthy western Europeans. We did not find evidence of association of mtSNPs or haplogroups pointing to a role for mtDNA in male infertility. A thorough review of the literature on mtDNA variation and infertility revealed contradictory findings and methodological and theoretical problems that overall undermine previous positive findings.

Elucidating the evolutionary relationships of the Aiptasiidae, a widespread cnidarian-dinoflagellate model system (Cnidaria: Anthozoa: Actiniaria: Metridioidea).

PubMed

Grajales, Alejandro; Rodríguez, Estefanía

2016-01-01

Sea anemones of the family Aiptasiidae sensu Grajales and Rodríguez (2014) are conspicuous members of shallow-water environments, including several species widely used as model systems for the study of cnidarian-dinoflagellate symbiosis and coral bleaching. Although previously published phylogenetic studies of sea anemones recovered Aiptasiidae as polyphyletic, they only included a sparse sample in terms of its taxonomic diversity and membership of the family had not been yet revised. This study explores the phylogenetic relationships of this family using five molecular markers and including newly collected material from the geographical distribution of most of the currently described genera and species. We find a monophyletic family Aiptasiidae. All the currently proposed genera were recovered as monophyletic units, a finding also supported by diagnostic morphological characters. Our results confirm Bellactis and Laviactis as members of Aiptasiidae, also in agreement with previous morphological studies. The monophyly of the group is congruent with the morphological homogeneity of the members of this family. The obtained results also allow discussing the evolution of morphological characters within the family. Furthermore, we find evidence for and describe a new cryptic species, Exaiptasia brasiliensis sp. nov., based on molecular data, geographical distribution, and the identity of its endosymbiotic dinoflagellate. Copyright © 2015 Elsevier Inc. All rights reserved.

Core psychopathology in anorexia nervosa and bulimia nervosa: A network analysis.

PubMed

Forrest, Lauren N; Jones, Payton J; Ortiz, Shelby N; Smith, April R

2018-04-25

The cognitive-behavioral theory of eating disorders (EDs) proposes that shape and weight overvaluation are the core ED psychopathology. Core symptoms can be statistically identified using network analysis. Existing ED network studies support that shape and weight overvaluation are the core ED psychopathology, yet no studies have estimated AN core psychopathology and concerns exist about the replicability of network analysis findings. The current study estimated ED symptom networks among people with anorexia nervosa (AN) and bulimia nervosa (BN) and among a combined group of people with AN and BN. Participants were girls and women with AN (n = 604) and BN (n = 477) seeking residential ED treatment. ED symptoms were assessed with the Eating Disorder Examination-Questionnaire (EDE-Q); 27 of the EDE-Q items were included as nodes in symptom networks. Core symptoms were determined by expected influence and strength values. In all networks, desiring weight loss, restraint, shape and weight preoccupation, and shape overvaluation emerged as the most important symptoms. In addition, in the AN and combined networks, fearing weight gain emerged as an important symptom. In the BN network, weight overvaluation emerged as another important symptom. Findings support the cognitive-behavioral premise that shape and weight overvaluation are at the core of AN psychopathology. Our BN and combined network findings provide a high degree of replication of previous findings. Clinically, findings highlight the importance of considering shape and weight overvaluation as a severity specifier and primary treatment target for people with EDs. © 2018 Wiley Periodicals, Inc.

Distinct pattern of cerebral blood flow alterations specific to schizophrenics experiencing auditory verbal hallucinations with and without insight: a pilot study.

PubMed

Jing, Rixing; Huang, Jiangjie; Jiang, Deguo; Lin, Xiaodong; Ma, Xiaolei; Tian, Hongjun; Li, Jie; Zhuo, Chuanjun

2018-01-23

Schizophrenia is associated with widespread and complex cerebral blood flow (CBF) disturbance. Auditory verbal hallucinations (AVH) and insight are the core symptoms of schizophrenia. However, to the best of our knowledge, very few studies have assessed the CBF characteristics of the AVH suffered by schizophrenic patients with and without insight. Based on our previous findings, Using a 3D pseudo-continuous ASL (pcASL) technique, we investigated the differences in AVH-related CBF alterations in schizophrenia patients with and without insight. We used statistical parametric mapping (SPM8) and statistical non-parametric mapping (SnPM13) to perform the fMRI analysis. We found that AVH-schizophrenia patients without insight showed an increased CBF in the left temporal pole and a decreased CBF in the right middle frontal gyrus when compared to AVH-schizophrenia patients with insight. Our novel findings suggest that AVH-schizophrenia patients without insight possess a more complex CBF disturbance. Simultaneously, our findings also incline to support the idea that the CBF aberrant in some specific brain regions may be the common neural basis of insight and AVH. Our findings support the mostly current hypotheses regarding AVH to some extent. Although our findings come from a small sample, it provide the evidence that indicate us to conduct a larger study to thoroughly explore the mechanisms of schizophrenia, especially the core symptoms of AVHs and insight.

A full virial analysis of the prestellar cores in the Ophiuchus molecular cloud

NASA Astrophysics Data System (ADS)

Pattle, Kate; Ward-Thompson, Derek

2015-08-01

We present the first observations of the Ophiuchus molecular cloud performed as part of the James Clerk Maxwell (JCMT) Gould Belt Survey with the SCUBA-2 instrument. We demonstrate methods for combining these data with HARP CO, Herschel and IRAM N2H+ observations in order to accurately quantify the properties of the SCUBA-2 sources in Ophiuchus.We perform a full virial analysis on the starless cores in Ophiuchus, including external pressure. We find that the majority of our cores are either bound or virialised, and that gravity and external pressure are typically of similar importance in confining cores. We find that the critical Bonnor-Ebert stability criterion is not a good indicator of the boundedness of our cores. We determine that N2H+ is a good tracer of the bound material of prestellar cores, and find that non-thermal linewidths decrease substantially between the intermediate-density gas traced by C18O and the high-density gas traced by N2H+, indicating the dissipation of turbulence within cores.We find variation from region to region in the virial balance of cores and the relative contributions of pressure and gravity to core support, as well as variation in the degree to which turbulence is dissipated within cores and in the relative numbers of protostellar and starless sources. We find further support for our previous hypothesis of a global evolutionary gradient from southwest to northeast across Ophiuchus, indicating sequential star formation across the region.

NO news is no new news

USGS Publications Warehouse

Fotheringham, C.J.; Keeley, J.E.

2005-01-01

In the paper 'NO News', Preston et al. (2004) make a number of erroneous assumptions regarding nitrogen oxide chemistry. These authors also present some very significant misinterpretations of previous research into the effects of various nitrogen oxides on germination of post-fire followers. Methodological differences between the study by Preston et al. (2004) and previous work are also problematic, such as using NO-donors in solution versus the use of direct application of various nitrogen oxides in the gaseous phase. A closer review of these studies, with the proper understanding of nitrogen oxide chemistry, and interpretations of the available literature, would lead to the conclusion that, contrary to the authors' assertions, the Preston et al. (2004) study supports, rather than refutes, earlier findings by Keeley and Fotheringham (1997, 1998a, b, 2000). ?? CAB International 2005.

Reciprocity Outperforms Conformity to Promote Cooperation.

PubMed

Romano, Angelo; Balliet, Daniel

2017-10-01

Evolutionary psychologists have proposed two processes that could give rise to the pervasiveness of human cooperation observed among individuals who are not genetically related: reciprocity and conformity. We tested whether reciprocity outperformed conformity in promoting cooperation, especially when these psychological processes would promote a different cooperative or noncooperative response. To do so, across three studies, we observed participants' cooperation with a partner after learning (a) that their partner had behaved cooperatively (or not) on several previous trials and (b) that their group members had behaved cooperatively (or not) on several previous trials with that same partner. Although we found that people both reciprocate and conform, reciprocity has a stronger influence on cooperation. Moreover, we found that conformity can be partly explained by a concern about one's reputation-a finding that supports a reciprocity framework.

Creating One's Reality: The Interaction of Politics Perceptions and Enactment Behavior.

PubMed

Frieder, Rachel E; Ma, Shuang Sara; Hochwarter, Wayne A

2016-01-01

The current study investigated the previously unexamined relationship between politics perceptions and employee enactment behavior. Consistent with previous job stress and sense-making research, we hypothesized that individuals reporting low levels of enactment behaviors would be more adversely affected by politics perceptions than those who engaged in high levels of enactment behavior. Results across two samples provided strong support for the hypothesized relationships. Specifically, employees who reported low levels of enactment behavior experienced less satisfaction, less person-environment fit, and reported lower levels of effort when faced with highly political environments. Conversely, levels of satisfaction and person-environment fit perceptions of individuals reporting high levels of enactment behaviors were largely unaffected by highly political contexts. Implications of these findings, strengths and limitations, and avenues for future research are provided.

Validation of Three Previously Developed Short Forms of the Beck Depression Inventory for Youth: A Replication.

PubMed

Blackmon, Jaime E; Liptak, Cori; Recklitis, Christopher J

2017-03-01

Three previously developed short forms of the Beck Depression Inventory-Youth (BDI-Y) were validated against the standard 20-item BDI-Y; 168 adolescent survivors completed the standard and short-form versions of the BDI-Y. The short forms were evaluated for internal consistency and compared with the standard BDI-Y using correlation coefficients and receiver operating characteristic curve analyses. The three short forms had good internal consistency (α > 0.85), high correlations with the total BDI-Y scale (r > 0.85), and good discrimination compared with the standard BDI-Y cutoff score (area under the ROC curve >0.95). Consistent with prior findings, strong psychometric properties of an eight-item short form support its use as a screening measure for adolescent cancer survivors.

Stimulated Brillouin scattering continuous wave phase conjugation in step-index fiber optics.

PubMed

Massey, Steven M; Spring, Justin B; Russell, Timothy H

2008-07-21

Continuous wave (CW) stimulated Brillouin scattering (SBS) phase conjugation in step-index optical fibers was studied experimentally and modeled as a function of fiber length. A phase conjugate fidelity over 80% was measured from SBS in a 40 m fiber using a pinhole technique. Fidelity decreases with fiber length, and a fiber with a numerical aperture (NA) of 0.06 was found to generate good phase conjugation fidelity over longer lengths than a fiber with 0.13 NA. Modeling and experiment support previous work showing the maximum interaction length which yields a high fidelity phase conjugate beam is inversely proportional to the fiber NA(2), but find that fidelity remains high over much longer fiber lengths than previous models calculated. Conditions for SBS beam cleanup in step-index fibers are discussed.

Melatonin in children with autism spectrum disorders: endogenous and pharmacokinetic profiles in relation to sleep.

PubMed

Goldman, Suzanne E; Adkins, Karen W; Calcutt, M Wade; Carter, Melissa D; Goodpaster, Robert L; Wang, Lily; Shi, Yaping; Burgess, Helen J; Hachey, David L; Malow, Beth A

2014-10-01

Supplemental melatonin has been used to treat sleep onset insomnia in children with autism spectrum disorders (ASD), although the mechanism of action is uncertain. We assessed endogenous and supplemental melatonin profiles in relation to sleep in nine children with ASD. In endogenous samples, maximal melatonin concentration (C(max)) and time to peak concentration (T(max)) were comparable to those previously published in the literature for typically developing children, and dim light melatonin onsets were captured in the majority of children. In treatment samples (supplemental melatonin), melatonin parameters were also comparable to those previously published for typically developing children. Our findings support that children with ASD and insomnia responsive to low dose melatonin treatment have relatively normal profiles of endogenous and supplemental melatonin.

Melatonin in Children with Autism Spectrum Disorders: Endogenous and Pharmacokinetic Profiles in Relation to Sleep

PubMed Central

Goldman, Suzanne E.; Adkins, Karen W.; Calcutt, M. Wade; Carter, Melissa D.; Goodpaster, Robert L.; Wang, Lily; Shi, Yaping; Burgess, Helen J.; Hachey, David L.

2015-01-01

Supplemental melatonin has been used to treat sleep onset insomnia in children with autism spectrum disorders (ASD), although the mechanism of action is uncertain. We assessed endogenous and supplemental melatonin profiles in relation to sleep in nine children with ASD. In endogenous samples, maximal melatonin concentration (Cmax) and time to peak concentration (Tmax) were comparable to those previously published in the literature for typically developing children, and dim light melatonin onsets were captured in the majority of children. In treatment samples (supplemental melatonin), melatonin parameters were also comparable to those previously published for typically developing children. Our findings support that children with ASD and insomnia responsive to low dose melatonin treatment have relatively normal profiles of endogenous and supplemental melatonin. PMID:24752680

Effects Of The ACA's Health Insurance Marketplaces On The Previously Uninsured: A Quasi-Experimental Analysis.

PubMed

Goldman, Anna L; McCormick, Danny; Haas, Jennifer S; Sommers, Benjamin D

2018-04-01

Descriptive studies have suggested that the Affordable Care Act's (ACA's) health insurance Marketplaces improved access to care. However, no evidence from quasi-experimental studies is available to support these findings. We used longitudinal survey data to compare previously uninsured adults with incomes that made them eligible for subsidized Marketplace coverage (138-400 percent of the federal poverty level) to those who had employer-sponsored insurance before the ACA with incomes in the same range. Among the previously uninsured group, the ACA led to a significant decline in the uninsurance rate, decreased barriers to medical care, increased the use of outpatient services and prescription drugs, and increased diagnoses of hypertension, compared to a control group with stable employer-sponsored insurance. Changes were largest among previously uninsured people with incomes of 138-250 percent of poverty, who were eligible for the ACA's cost-sharing reductions. Our quasi-experimental approach provides rigorous new evidence that the ACA's Marketplaces led to improvements in several important health care outcomes, particularly among low-income adults.

Demographic response of black bears at Cold Lake, Alberta, to the removal of adult males

USGS Publications Warehouse

Sargeant, Glen A.; Ruff, Robert L.

2001-01-01

Previous reports described an increase in population density following the removal of 23 adult male black bears (Ursus americanus) from a 218-km2 study area near Cold Lake, Alberta (the CLSA). This finding plays a central role in continuing debates over population regulation in bears, but has recently been criticized because density estimates were based on assumptions that were not met. Moreover, subsequent discussion has been predicated on conjecture that human exploitation had minimal influence on population dynamics. Our reanalysis supports previous descriptions of trends in bear density at Cold Lake. However, survival records revealed heavier exploitation than previously suspected. An underlying assumption of previous interpretationsCthat the Cold Lake bear population was naturally regulated near carrying capacityCno longer seems reasonable. Adult males deterred bears in other sex-age groups from using the CLSA; however, we found no evidence that birth or death rates were affected. The observed increase in local density should not be construed as a density-dependent response. Abrupt changes in local density might not have occurred if males had been removed from a larger area encompassing the CLSA.

The Dampening Effects of Perceived Teacher Enthusiasm on Class-Related Boredom: The Mediating Role of Perceived Autonomy Support and Task Value

PubMed Central

Cui, Guanyu; Yao, Meilin; Zhang, Xia

2017-01-01

Class-related boredom is commonly experienced by students and it has an impact on their learning engagement and achievements. Previous research has found that perceived teacher enthusiasm might contribute to reducing students’ class-related boredom. However, the mechanism through which perceived teacher enthusiasm affects class-related boredom remains unexplored. The purpose of the present study was to investigate the mediating role of perceived autonomy support and task value in the relationship between teacher enthusiasm and class-related boredom. College students (N = 734) completed questionnaires on perceived teacher enthusiasm, boredom proneness, perceived task difficulty, perceived autonomy support, perceived task value, and class-related boredom. Results showed that after controlling for the effects of demographic variables, boredom proneness, and perceived task difficulty, both perceived autonomy support and task value fully mediated the relationship between perceived teacher enthusiasm and class-related boredom. These findings suggest that students who perceive more teacher enthusiasm might perceive more autonomy support and task value, which in turn reduce the students’ class-related boredom. Limitations in the present study have also been discussed. PMID:28367134

Single Pd Atoms on θ-Al2O3 (010) Surface do not Catalyze NO Oxidation.

PubMed

Narula, Chaitanya K; Allard, Lawrence F; Moses-DeBusk, Melanie; Stocks, G Malcom; Wu, Zili

2017-04-03

New convenient wet-chemistry synthetic routes have made it possible to explore catalytic activities of a variety of single supported atoms, however, the single supported atoms on inert substrates (e.g. alumina) are limited to adatoms and cations of Pt, Pd, and Ru. Previously, we have found that single supported Pt atoms are remarkable NO oxidation catalysts. In contrast, we report that Pd single atoms are completely inactive for NO oxidation. The diffuse reflectance infra-red spectroscopy (DRIFTS) results show the absence of nitrate formation on catalyst. To explain these results, we explored modified Langmuir-Hinshelwood type pathways that have been proposed for oxidation reactions on single supported atom. In the first pathway, we find that there is energy barrier for the release of NO 2 which prevent NO oxidation. In the second pathway, our results show that there is no driving force for the formation of O=N-O-O intermediate or nitrate on single supported Pd atoms. The decomposition of nitrate, if formed, is an endothermic event.

The Dampening Effects of Perceived Teacher Enthusiasm on Class-Related Boredom: The Mediating Role of Perceived Autonomy Support and Task Value.

PubMed

Cui, Guanyu; Yao, Meilin; Zhang, Xia

2017-01-01

Class-related boredom is commonly experienced by students and it has an impact on their learning engagement and achievements. Previous research has found that perceived teacher enthusiasm might contribute to reducing students' class-related boredom. However, the mechanism through which perceived teacher enthusiasm affects class-related boredom remains unexplored. The purpose of the present study was to investigate the mediating role of perceived autonomy support and task value in the relationship between teacher enthusiasm and class-related boredom. College students ( N = 734) completed questionnaires on perceived teacher enthusiasm, boredom proneness, perceived task difficulty, perceived autonomy support, perceived task value, and class-related boredom. Results showed that after controlling for the effects of demographic variables, boredom proneness, and perceived task difficulty, both perceived autonomy support and task value fully mediated the relationship between perceived teacher enthusiasm and class-related boredom. These findings suggest that students who perceive more teacher enthusiasm might perceive more autonomy support and task value, which in turn reduce the students' class-related boredom. Limitations in the present study have also been discussed.

Receiving or believing in family support? Contributors to the life quality of Latino and non-Latino families of children with intellectual disability.

PubMed

Cohen, S R; Holloway, S D; Domínguez-Pareto, I; Kuppermann, M

2014-04-01

Previous studies have identified the role of family support in mitigating the stress of parents caring for a child with intellectual disability. Less is known about families whose members are willing but unable to support each other because of geographical, structural and economic barriers. Our study examined the contribution to family quality of life (FQL) of family support beliefs, actual assistance from family members, as well as the moderating effects of ethnicity and household income. We conducted telephone interviews with 84 Latino and 61 non-Latino mothers. Mothers who received more emotional support from partners and other family members reported a higher FQL, controlling for family characteristics. Familism beliefs were also associated with FQL, particularly for Latino mothers. Income was not a significant moderator. These findings suggest that some predictors of FQL are partially moderated by ethnicity, while others may be powerful across diverse communities. © 2013 The Authors. Journal of Intellectual Disability Research © 2013 John Wiley & Sons Ltd, MENCAP & IASSIDD.

Male genital leiomyomas showing androgen receptor expression.

PubMed

Suárez-Peñaranda, José Manuel; Vieites, Begoña; Evgenyeva, Elena; Vázquez-Veiga, Hugo; Forteza, Jeronimo

2007-12-01

Genital leiomyoma in men include those superficial leiomyomas arising in the scrotum and the areola. They are unusual neoplasms: few cases have been reported in the literature and they usually escape clinical diagnosis. Three cases of male genital leiomyomas are reported: two in the scrotum and one in the areola. They were all conservatively excised and the behaviour was completely benign in all cases. Histopathological examination showed the typical findings of superficial leiomyomas, with some minor differences between cases arising in the scrotum and those from the areola. Immunohistochemical findings not only confirmed the smooth muscle nature of all cases but also showed unequivocal immunostaining for androgen receptors in the leiomyomas from the scrotum. Immunostaining for androgen receptors in scrotal leiomyomas is, as far as we are aware, a previously unknown characteristic of male genital leiomyomas. This finding supports the role of steroid hormones in the growth of genital leiomyomas, similar to leiomyomas found in other locations.

Applying Exploratory Structural Equation Modeling to Examine the Student-Teacher Relationship Scale in a Representative Greek Sample.

PubMed

Tsigilis, Nikolaos; Gregoriadis, Athanasios; Grammatikopoulos, Vasilis; Zachopoulou, Evridiki

2018-01-01

Teacher-child relationships in early childhood are a fundamental prerequisite for children's social, emotional, and academic development. The Student-Teacher Relationship Scale (STRS) is one of the most widely accepted and used instruments that evaluate the quality of teacher-child relationships. STRS is a 28-item questionnaire that assess three relational dimensions, Closeness, Conflict, and Dependency. The relevant literature has shown a pattern regarding the difficulty to support the STRS factor structure with CFA, while it is well-documented with EFA. Recently, a new statistical technique was proposed to combine the best of the CFA and EFA namely, the Exploratory Structural Equation Modeling (ESEM). The purpose of this study was (a) to examine the factor structure of the STRS in a Greek national sample. Toward this end, the ESEM framework was applied in order to overcome the limitations of EFA and CFA, (b) to confirm previous findings about the cultural influence in teacher-child relationship patterns, and (c) to examine the invariance of STRS across gender and age. Early educators from a representative Greek sample size of 535 child care and kindergarten centers completed the STRS for 4,158 children. CFA as well as ESEM procedures were implemented. Results showed that ESEM provided better fit to the data than CFA in both groups, supporting the argument that CFA is an overly restrictive approach in comparison to ESEM for the study of STRS. All primary loadings were statistically significant and were associated with their respective latent factors. Contrary to the existing literature conducted in USA and northern Europe, the association between Closeness and Dependency yielded a positive correlation. This finding is in line with previous studies conducted in Greece and confirm the existence of cultural differences in teacher-child relationships. In addition, findings supported the configural, metric, scalar, and variance/covariance equivalence of the STRS between males and females and between preschoolers (3-5 years) and early primary years (5-7 years). Latent factor means comparisons showed that females seem to have a warmer and more dependent relationship with their teachers and are less conflictual in comparison to males.

Applying Exploratory Structural Equation Modeling to Examine the Student-Teacher Relationship Scale in a Representative Greek Sample

PubMed Central

Tsigilis, Nikolaos; Gregoriadis, Athanasios; Grammatikopoulos, Vasilis; Zachopoulou, Evridiki

2018-01-01

Teacher-child relationships in early childhood are a fundamental prerequisite for children's social, emotional, and academic development. The Student-Teacher Relationship Scale (STRS) is one of the most widely accepted and used instruments that evaluate the quality of teacher-child relationships. STRS is a 28-item questionnaire that assess three relational dimensions, Closeness, Conflict, and Dependency. The relevant literature has shown a pattern regarding the difficulty to support the STRS factor structure with CFA, while it is well-documented with EFA. Recently, a new statistical technique was proposed to combine the best of the CFA and EFA namely, the Exploratory Structural Equation Modeling (ESEM). The purpose of this study was (a) to examine the factor structure of the STRS in a Greek national sample. Toward this end, the ESEM framework was applied in order to overcome the limitations of EFA and CFA, (b) to confirm previous findings about the cultural influence in teacher-child relationship patterns, and (c) to examine the invariance of STRS across gender and age. Early educators from a representative Greek sample size of 535 child care and kindergarten centers completed the STRS for 4,158 children. CFA as well as ESEM procedures were implemented. Results showed that ESEM provided better fit to the data than CFA in both groups, supporting the argument that CFA is an overly restrictive approach in comparison to ESEM for the study of STRS. All primary loadings were statistically significant and were associated with their respective latent factors. Contrary to the existing literature conducted in USA and northern Europe, the association between Closeness and Dependency yielded a positive correlation. This finding is in line with previous studies conducted in Greece and confirm the existence of cultural differences in teacher-child relationships. In addition, findings supported the configural, metric, scalar, and variance/covariance equivalence of the STRS between males and females and between preschoolers (3–5 years) and early primary years (5–7 years). Latent factor means comparisons showed that females seem to have a warmer and more dependent relationship with their teachers and are less conflictual in comparison to males. PMID:29867688

Youth–adult partnership: exploring contributions to empowerment, agency and community connections in Malaysian youth programs.

PubMed

Krauss, Steven Eric; Collura, Jessica; Zeldin, Shepherd; Ortega, Adriana; Abdullah, Haslinda; Sulaiman, Abdul Hadi

2014-09-01

Youth–adult partnership (Y–AP) has emerged as a key practice for enacting two features of effective developmental settings: supportive adult relationships and support for efficacy and mattering. Previous studies have shown that when youth, supported by adults, actively participate in organizational and community decision making they are likely to show greater confidence and agency, empowerment and critical consciousness, and community connections. Most of the extant research on Y–AP is limited to qualitative studies and the identification of organizational best practices. Almost all research focuses on Western sociocultural settings. To address these gaps, 299 youth, age 15 to 24, were sampled from established afterschool and community programs in Malaysia to explore the contribution of Y–AP (operationalized as having two components: youth voice in decision-making and supportive adult relationships) to empowerment, agency and community connections. As hypothesized, hierarchical regressions indicated that program quality (Y–AP, safe environment and program engagement) contributed to agency, empowerment and community connections beyond the contribution of family, school and religion. Additionally, the Y–AP measures contributed substantially more variance than the other measures of program quality on each outcome. Interaction effects indicated differences by age for empowerment and agency but not for community connections. The primary findings in this inquiry replicate those found in previous interview and observational-oriented studies. The data suggests fertile ground for future research while demonstrating that Y–AP may be an effective practice for positive youth development outside of Western settings.

RESISTANCE TO EXTINCTION AND RELAPSE IN COMBINED STIMULUS CONTEXTS

PubMed Central

Podlesnik, Christopher A; Bai, John Y. H; Elliffe, Douglas

2012-01-01

Reinforcing an alternative response in the same context as a target response reduces the rate of occurrence but increases the persistence of that target response. Applied researchers who use such techniques to decrease the rate of a target problem behavior risk inadvertently increasing the persistence of the same problem behavior. Behavioral momentum theory asserts that the increased persistence is a function of the alternative reinforcement enhancing the Pavlovian relation between the target stimulus context and reinforcement. A method showing promise for reducing the persistence-enhancing effects of alternative reinforcement is to train the alternative response in a separate stimulus context before combining with the target stimulus in extinction. The present study replicated previous findings using pigeons by showing that combining an “alternative” richer VI schedule (96 reinforcers/hr) with a “target” leaner VI schedule (24 reinforcers/hr) reduced resistance to extinction of target responding compared with concurrent training of the alternative and target responses (totaling 120 reinforcers/hr). We also found less relapse with a reinstatement procedure following extinction with separate-context training, supporting previous findings that training conditions similarly influence both resistance to extinction and relapse. Finally, combining the alternative stimulus context was less disruptive to target responding previously trained in the concurrent schedule, relative to combining with the target response trained alone. Overall, the present findings suggest the technique of combining stimulus contexts associated with alternative responses with those associated with target responses disrupts target responding. Furthermore, the effectiveness of this disruption is a function of training context of reinforcement for target responding, consistent with assertions of behavioral momentum theory. PMID:23008521

Family close but friends closer: exploring social support and resilience in older spousal dementia carers.

PubMed

Donnellan, Warren J; Bennett, Kate M; Soulsby, Laura K

2017-11-01

Spousal dementia carers have unique support needs; they are likely to disengage from their existing social networks as they need to devote more time to caring as the disease progresses. Previously we showed that support resources can facilitate resilience in carers, but the relationship is complex and varies by relationship type. The current paper aims to explore social support as a key component of resilience to identify the availability, function and perceived functional aspects of support provided to older spousal dementia carers. We conducted 23 in-depth qualitative interviews with spousal carers from two carer support groups and a care home in North West England. Family and friends served a wide range of functions but were equally available to resilient and non-resilient participants. Family support was perceived as unhelpful if it created feelings of over-dependence. Participants were less likely to resist involvement of grandchildren due to their relatively narrow and low-level support functions. Friend support was perceived as most helpful when it derived from those in similar circumstances. Neighbours played a functionally unique role of crisis management. These perceptions may moderate the effect of support on resilience. Family and friend support is not always sufficient to facilitate resilience. Support functions facilitate resilience only if they are perceived to match need. Implications of these findings are discussed.

77 FR 20526 - Airworthiness Directives; 328 Support Services GmbH Airplanes

Federal Register 2010, 2011, 2012, 2013, 2014

2012-04-05

... directive (AD) for all 328 Support Services GmbH (Type Certificate previously held by AvCraft Aerospace GmbH... GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH; Fairchild Dornier GmbH; Dornier... applies to 328 Support Services GmbH (Type Certificate previously held by AvCraft Aerospace GmbH...

77 FR 12163 - Airworthiness Directives; 328 Support Services GmbH (Type Certificate Previously Held by AvCraft...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-29

... Airworthiness Directives; 328 Support Services GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH; Fairchild Dornier GmbH; Dornier Luftfahrt GmbH) Airplanes AGENCY: Federal Aviation Administration (FAA... directive (AD) for all 328 Support Services GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH...

76 FR 42031 - Airworthiness Directives; 328 Support Services GmbH (Type Certificate Previously Held by AvCraft...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-07-18

... Airworthiness Directives; 328 Support Services GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH; Fairchild Dornier GmbH; Dornier Luftfahrt GmbH) Model 328-100 and -300 Airplanes AGENCY: Federal Aviation... 328 Support Services GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH; Fairchild...

Models for predicting turnover of residential aged care nurses: a structural equation modelling analysis of secondary data.

PubMed

Gao, Fengsong; Newcombe, Peter; Tilse, Cheryl; Wilson, Jill; Tuckett, Anthony

2014-09-01

Nurse turnover in the residential aged care industry is a pressing issue. Researchers have shown ongoing interest in exploring how the factors that are amendable to change in aged care policy, regulation and funding and in organizational procedures (e.g. job demands, coping resources and psychological health of nurses) impact on turnover. However, the findings are mixed. This study tested two theoretical models of turnover to examine the structural relationships among job demands, coping resources, psychological health and turnover of residential aged care nurses. Although many previous studies operationalized turnover as intention to leave, the present study investigated actual turnover by following up with the same individuals over time, and thus provided more accurate predictive models of turnover behaviour. The sample, 239 Australian residential aged care nurses, came from the Nurses and Midwives e-cohort Study. Job demands, coping resources, and psychological health were measured using standardized instruments. Structural equation modelling was used to test the measurement and structural models. Controlling for a number of workforce and individual characteristics, coping resources (measured by job control, supervisor support, and co-worker support) were negatively and directly associated with turnover. Additionally, the findings supported the Job Demand-Control-Support model in that higher coping resources and lower job demands (indicated by psychological demands, physical demands, and effort) were related to better psychological health (measured by vitality, social functioning, role emotional, and mental health), and higher job demands were related to lower coping resources. Findings suggest that aged care policy makers and service providers might consider increasing coping resources available to nurses and minimizing job demands of care work to reduce turnover and improve nurses' psychological health. Moreover, findings from this Australian study may provide valuable practical and policy implications for other developed countries. Copyright © 2014 Elsevier Ltd. All rights reserved.

The Influence of Judgment Calls on Meta-Analytic Findings.

PubMed

Tarrahi, Farid; Eisend, Martin

2016-01-01

Previous research has suggested that judgment calls (i.e., methodological choices made in the process of conducting a meta-analysis) have a strong influence on meta-analytic findings and question their robustness. However, prior research applies case study comparison or reanalysis of a few meta-analyses with a focus on a few selected judgment calls. These studies neglect the fact that different judgment calls are related to each other and simultaneously influence the outcomes of a meta-analysis, and that meta-analytic findings can vary due to non-judgment call differences between meta-analyses (e.g., variations of effects over time). The current study analyzes the influence of 13 judgment calls in 176 meta-analyses in marketing research by applying a multivariate, multilevel meta-meta-analysis. The analysis considers simultaneous influences from different judgment calls on meta-analytic effect sizes and controls for alternative explanations based on non-judgment call differences between meta-analyses. The findings suggest that judgment calls have only a minor influence on meta-analytic findings, whereas non-judgment call differences between meta-analyses are more likely to explain differences in meta-analytic findings. The findings support the robustness of meta-analytic results and conclusions.

Genetic Variant in ACVR2B Is Associated with Lean Mass.

PubMed

Klimentidis, Yann C; Bea, Jennifer W; Thompson, Patricia; Klimecki, Walter T; Hu, Chengcheng; Wu, Guanglin; Nicholas, J Skye; Ryckman, Kelli K; Chen, Zhao

2016-07-01

Low lean mass (LM) is a risk factor for chronic disease, a major cause of disability and diminished quality of life, and is a heritable trait. However, relatively few specific genetic factors have been identified as potentially influencing this trait. In this study, we selected 1493 single-nucleotide polymorphisms (SNP) in 155 candidate genes involved in anabolic, catabolic, growth hormone, and other related pathways and examined their association with LM, assessed by dual-energy x-ray absorptiometry, in a sample of 2760 non-Hispanic and Hispanic white postmenopausal women from the Women's Health Initiative (WHI) Observational Study. We assessed the replication of our top findings in a meta-analysis of 20 genome-wide association studies (n = 38,292) conducted by the Cohorts for Heart and Aging Research in Genomic Epidemiology Consortium Musculoskeletal Working Group. We identified 32 SNPs that had nominally significant associations with LM in the WHI cohort. In the replication stage, we find that SNP rs2276541 in the activin A receptor, type IIB (ACVR2B), was significantly associated with LM (β = 0.15, P = 2.17 × 10). ACVR2B codes for a receptor for a negative regulator of skeletal muscle, myostatin, and has previously been identified in a candidate gene study as a determinant of skeletal muscle mass. Our findings support a previously proposed role of ACVR2B allelic variation as a determinant of muscle mass and extend prior findings in men and women. Additional large-scale studies will be needed to confirm our findings in different populations.

Leptospirosis in American Samoa 2010: Epidemiology, Environmental Drivers, and the Management of Emergence

PubMed Central

Lau, Colleen L.; Dobson, Annette J.; Smythe, Lee D.; Fearnley, Emily J.; Skelly, Chris; Clements, Archie C. A.; Craig, Scott B.; Fuimaono, Saipale D.; Weinstein, Philip

2012-01-01

Leptospirosis has recently been reported as an emerging disease worldwide, and a seroprevalence study was undertaken in American Samoa to better understand the drivers of transmission. Antibodies indicative of previous exposure to leptospirosis were found in 15.5% of 807 participants, predominantly against three serovars that were not previously known to occur in American Samoa. Questionnaires and geographic information systems data were used to assess behavioral factors and environmental determinants of disease transmission, and logistic regression was used to identify factors associated with infection. Many statistically significant factors were consistent with previous studies, but we also showed a significant association with living at lower altitudes (odds ratio [OR] = 1.53, 95% confidence interval [CI]: 1.03–2.28), and having higher numbers of piggeries around the home (OR = 2.63, 95% CI: 1.52–4.40). Our findings support a multifaceted approach to combating the emergence of leptospirosis, including modification of individual behavior, but importantly also managing the evolving environmental drivers of risk. PMID:22302868

Flow field interactions between two tandem cyclists

NASA Astrophysics Data System (ADS)

Barry, Nathan; Burton, David; Sheridan, John; Thompson, Mark; Brown, Nicholas A. T.

2016-12-01

Aerodynamic drag is the primary resistive force acting on cyclists at racing speeds. Many events involve cyclists travelling in very close proximity. Previous studies have shown that interactions result in significant drag reductions for inline cyclists. However, the interaction between cyclist leg position (pedalling) and the vortical flow structures that contribute significantly to the drag on an isolated cyclist has not previously been quantified or described for tandem cyclists of varying separation. To this end, scale model cyclists were constructed for testing in a water channel for inline tandem configurations. Particle image velocimetry was used to capture time-averaged velocity fields around two tandem cyclists. Perhaps surprisingly, the wake of a trailing cyclist maintains strong similarity to the characteristic wake of a single cyclist despite a significant disturbance to the upstream flow. Together with streamwise velocity measurements through the wake and upstream of the trailing cyclist, this work supports previous findings, which showed that the trailing cyclist drag reduction is primarily due to upstream sheltering effects reducing the stagnation pressure on forward-facing surfaces.

Micrographia associated with a parietal lobe lesion in multiple sclerosis.

PubMed Central

Scolding, N J; Lees, A J

1994-01-01

The occurrence of micrographia in a 52 year old women two years after an isolated episode of painful sensory disturbance led to the diagnosis of multiple sclerosis. Her handwriting returned to normal after a course of intravenous methylprednisolone. Previous reports of movement disorders occurring in the context of multiple sclerosis are briefly reviewed. The finding on MRI studies of an enhancing lesion in the dominant parietal white matter supports Kinnier Wilson's suggestion that the anatomical origin of micrographia lies in the cerebral hemisphere rather than the corpus striatum. Images PMID:8006658

A Study of the Air Force’s Current Method of Training Individuals to Use Contractor Developed Software in Information Management and the Perceived Effectiveness of Training

DTIC Science & Technology

1990-12-01

and only one Navy study was located. Lt. Cynthia S. Lassnoff (USN) conducted a case analysis of the training requirements of Navy microcomputer users...effectiveness of the training. The study found that greater emphasis must be placed on developing and supporting the use of a standardized training...recommends areas of further research based on the findings of this research. 1-8 II. Background No previous studies were located that evaluated how the Air

Genetic studies on reference strains of mutans streptococci.

PubMed

Ota, Fusao; Yamato, Masayuki; Hayashi, Mie; Ota, Masayuki; Koga, Tetsuro; Sherin, Ahmed; Mukai, Chiharu; Sakai, Kentaro; Yamamoto, Shigeru

2002-01-01

Twenty four reference strains (serotype a-h) belonging to the mutans group of streptococci were compared for DNA fragment patterns of rDNA after treatment with Hind III. It was shown that Streptococcus cricetus (serotype a), S. rattus (serotype b), and S. downei (serotype h) reveals comparatively homogeneous patterns while S. mutans (serotype c, e and f) exhibits differences between the different serotypes as well as within single serotypes. S. sobrinus had an intermediary diversity. These data support the previous findings that S. mutans is heterogeneous at the serological, biochemical and genetical level.

Recollections of their fathers by homosexual and heterosexual men.

PubMed

Phelan, J E

1996-12-01

A nonrandom, nonclinical t-test comparison study of 30 homosexual and 30 heterosexual men was conducted to describe their memories of their fathers' behaviors toward them. Previous studies had identified the "classical pattern," that is, the fathers of homosexual men were considered cold, hostile, and distant. Those studies were sparked by Freudian theory which postulated the same. Therefore, a brief revisitation has been conducted. Again, the findings supported the earlier, that is, the homosexual men recalled their fathers as more rejecting and less loving than the heterosexual men.

Lung cancer induced in hamsters by low doses of alpha radiation from polonium-210.

PubMed

Little, J B; Kennedy, A R; McGandy, R B

1975-05-16

Lung cancers have been induced in 9 to 53 percent of hamsters given multiple intratracheal instillations of polonium-210 in amounts yielding lifetime exposures of 15 to 300 rads to the lungs. Cigarette smokers have previously been estimated to receive 20 rads to areas of the bronchial epithelium from deposited polonium-210. This finding thus supports the hypothesis that alpha radiation resulting from the polonium-210 or lead-210 present in cigarette smoke may be a significant causative factor in human lung cancer.

Changing to Concept-Based Curricula: The Process for Nurse Educators

PubMed Central

Baron, Kristy A.

2017-01-01

Background: The complexity of health care today requires nursing graduates to use effective thinking skills. Many nursing programs are revising curricula to include concept-based learning that encourages problem-solving, effective thinking, and the ability to transfer knowledge to a variety of situations—requiring nurse educators to modify their teaching styles and methods to promote student-centered learning. Changing from teacher-centered learning to student-centered learning requires a major shift in thinking and application. Objective: The focus of this qualitative study was to understand the process of changing to concept-based curricula for nurse educators who previously taught in traditional curriculum designs. Methods: The sample included eight educators from two institutions in one Western state using a grounded theory design. Results: The themes that emerged from participants’ experiences consisted of the overarching concept, support for change, and central concept, finding meaning in the change. Finding meaning is supported by three main themes: preparing for the change, teaching in a concept-based curriculum, and understanding the teaching-learning process. Conclusion: Changing to a concept-based curriculum required a major shift in thinking and application. Through support, educators discovered meaning to make the change by constructing authentic learning opportunities that mirrored practice, refining the change process, and reinforcing benefits of teaching. PMID:29399236

Perceptions of Chinese cancer patients of the favorable and unfavorable words conveyed by their social support providers.

PubMed

Liu, Jun-E; Mok, Esther; Wong, Thomas

2005-01-01

The aim of this study is to describe the experience and expectations of Chinese cancer patients with regard to the favorable and unfavorable words conveyed by their social support providers. In-depth interviews were conducted with 20 patients with cancer using a qualitative approach, and the data obtained were analyzed using content analysis. The findings indicated that favorable words inspired patients with cancer and raised their hopes. Such words included words expressing positive confirmation of patients' physical condition and mental status, words of encouragement and consolation, discussions of successful cases, information about advanced medical techniques and developments, practical instructions, emotional support from close relatives, confirmation about previous achievements for the family and about one's career, as well as small talk to distract the patient. Unfavorable words were those that weakened the patients' hopes and self-esteem. They included words expressing negative information and pessimistic attitudes, those indicating an overprotective attitude on the part of close relatives, as well as words expressing commiseration, advice, and an underestimation of the patients' suffering without empathy. The findings provide guidelines for nurses to communicate with patients with cancer verbally in a Chinese cultural context, and outline strategies for communication to meet psychologic needs of patients.

Deeper processing is beneficial during episodic memory encoding for adults with Williams syndrome.

PubMed

Greer, Joanna; Hamiliton, Colin; Riby, Deborah M; Riby, Leigh M

2014-07-01

Previous research exploring declarative memory in Williams syndrome (WS) has revealed impairment in the processing of episodic information accompanied by a relative strength in semantic ability. The aim of the current study was to extend this literature by examining how relatively spared semantic memory may support episodic remembering. Using a level of processing paradigm, older adults with WS (aged 35-61 years) were compared to typical adults of the same chronological age and typically developing children matched for verbal ability. In the study phase, pictures were encoded using either a deep (decide if a picture belongs to a particular category) or shallow (perceptual based processing) memory strategy. Behavioural indices (reaction time and accuracy) at retrieval were suggestive of an overall difficulty in episodic memory for WS adults. Interestingly, however, semantic support was evident with a greater recall of items encoded with deep compared to shallow processing, indicative of an ability to employ semantic encoding strategies to maximise the strength of the memory trace created. Unlike individuals with autism who find semantic elaboration strategies problematic, the pattern of findings reported here suggests in those domains that are relatively impaired in WS, support can be recruited from relatively spared cognitive processes. Copyright © 2014 Elsevier Ltd. All rights reserved.

Public attention to science and political news and support for climate change mitigation

NASA Astrophysics Data System (ADS)

Hart, P. Sol; Nisbet, Erik C.; Myers, Teresa A.

2015-06-01

We examine how attention to science and political news may influence public knowledge, perceived harm, and support for climate mitigation policies. Previous research examining these relationships has not fully accounted for how political ideology shapes the mental processes through which the public interprets media discourses about climate change. We incorporate political ideology and the concept of motivated cognition into our analysis to compare and contrast two prominent models of opinion formation, the scientific literacy model, which posits that disseminating scientific information will move public opinion towards the scientific consensus, and the motivated reasoning model, which posits that individuals will interpret information in a biased manner. Our analysis finds support for both models of opinion formation with key differences across ideological groups. Attention to science news was associated with greater perceptions of harm and knowledge for conservatives, but only additional knowledge for liberals. Supporting the literacy model, greater knowledge was associated with more support for climate mitigation for liberals. In contrast, consistent with motivated reasoning, more knowledgeable conservatives were less supportive of mitigation policy. In addition, attention to political news had a negative association with perceived harm for conservatives but not for liberals.

Intra-group Stigma: Examining Peer Relationships Among Women in Recovery for Addictions

PubMed Central

Gunn, Alana J.; Canada, Kelli E.

2015-01-01

This grounded theory study explores how women with histories of addiction perceive stigma while in treatment. In-depth interviews were conducted with 30 women participating in a residential drug treatment center. Previous research has found that support from peers during recovery can be critical to managing illnesses. In fact, researchers have postulated that peers can be a more effective form of support than even family. This study extends existing literature indicating that peer support systems can be supportive, however they can also can be perceived as negative support that impose stigmas. Findings reveal that women perceive stigmas due to how various types of drug use violate societal expectations and conflict with notions of deservingness. Specifically, the “hard users” (i.e., women who use heroin or crack cocaine) perceive stigmas regarding how their drug use violates norms of womanhood. Moreover, the “soft users” (i.e., those who use alcohol or marijuana) perceive stigmas that their drug use is considered undeserving of support. This paper explores the factors that contribute to stigma amongst populations who potentially face marginalization from larger society. Implications for treatment and group work are discussed. PMID:26617439

Peripartum changes in social support among women with and without anxiety and depressive disorders prior to pregnancy: a prospective-longitudinal study.

PubMed

Asselmann, E; Wittchen, H-U; Erler, L; Martini, J

2016-12-01

This study aims to prospectively examine peripartum changes in social support in women with and without anxiety and depressive disorders prior to pregnancy. Data come from the Maternal Anxiety in Relation to Infant Development (MARI) Study, a prospective-longitudinal investigation among n = 306 expectant mothers. DSM-IV anxiety and depressive disorders were assessed in early pregnancy using the Composite International Diagnostic Interview for Women (CIDI-V). Social support was assessed with the Social Support Questionnaire during pregnancy as well as 4 and 16 months postpartum. Perceived social support in the total sample declined from prepartum to postpartum. Levels of prepartum and postpartum social support were lower in women with comorbid anxiety and depressive disorders compared to those with pure depressive disorder(s), pure anxiety disorder(s), or comorbid anxiety and depressive disorders prior to pregnancy. Moreover, social support more strongly declined from prepartum to postpartum in women with comorbid anxiety and depressive disorders compared to those without anxiety and depressive disorder prior to pregnancy. Findings suggest that women with a previous history of comorbid anxiety and depressive disorders are at particular risk for deficient social support during pregnancy and after delivery and might thus profit from targeted early interventions.

Race/ethnicity, psychological resilience, and social support among OEF/OIF combat veterans.

PubMed

Herbert, Matthew S; Leung, Desmond W; Pittman, James O E; Floto, Elizabeth; Afari, Niloofar

2018-07-01

This study examined the relationship between race/ethnicity and psychological resilience, and the moderating role of social support in this relationship among non-Hispanic White (n = 605), Hispanic (n = 107), African American (n = 141), and Asian American (n = 97) Operation Enduring Freedom/Operation Iraqi Freedom (OEF/OIF) combat veterans. Veterans were primarily male (88%) with a mean age of 31.4 years (SD = 8.35). An analysis of covariance showed that Asian American veterans reported significantly lower psychological resilience than non-Hispanic White veterans. The interaction of race/ethnicity and social support with psychological resilience was examined via linear regression. We found that the relationship between psychological resilience and social support significantly differed by race/ethnicity such that social support was positively associated with psychological resilience among non-Hispanic White veterans, but not among other racial/ethnic groups. Our findings are consistent with previous studies that show Asian American veterans report lower psychological resilience than non-Hispanic White veterans. Cultural differences in how and why individuals use social support may underlie racial/ethnic differences in the relationship between social support and psychological resilience. Future qualitative and quantitative research is encouraged to better understand how social support relates to psychological resilience among minority OEF/OIF combat veterans. Copyright © 2018. Published by Elsevier B.V.

Do scientific advancements lean on the shoulders of giants? A bibliometric investigation of the Ortega hypothesis.

PubMed

Bornmann, Lutz; de Moya Anegón, Félix; Leydesdorff, Loet

2010-10-13

In contrast to Newton's well-known aphorism that he had been able "to see further only by standing on the shoulders of giants," one attributes to the Spanish philosopher Ortega y Gasset the hypothesis saying that top-level research cannot be successful without a mass of medium researchers on which the top rests comparable to an iceberg. The Ortega hypothesis predicts that highly-cited papers and medium-cited (or lowly-cited) papers would equally refer to papers with a medium impact. The Newton hypothesis would be supported if the top-level research more frequently cites previously highly-cited work than that medium-level research cites highly-cited work. Our analysis is based on (i) all articles and proceedings papers which were published in 2003 in the life sciences, health sciences, physical sciences, and social sciences, and (ii) all articles and proceeding papers which were cited within these publications. The results show that highly-cited work in all scientific fields more frequently cites previously highly-cited papers than that medium-cited work cites highly-cited work. We demonstrate that papers contributing to the scientific progress in a field lean to a larger extent on previously important contributions than papers contributing little. These findings support the Newton hypothesis and call into question the Ortega hypothesis (given our usage of citation counts as a proxy for impact).

The influence of daily routines on engaging in diabetes self-management

PubMed Central

Fritz, Heather

2018-01-01

Objective In contrast to previous research concerning the importance of routines in occupational engagement, most of which have largely focused on the routines of children and families, in this study a qualitative methodology was used to understand how routines function in a specific occupation: diabetes self-management (DSM). Methods Ten low-income women participated in a multiple-methods study that involved completing a time-geographic diary (TGD) and participating in a TGD interview. Results Findings reveal that pre-existing routines must be changed so that they may better support engagement in DSM, and that such changes are tied to underlying habits and life situations. The experiences of study participants also showed that the distribution of daily occupations through time and across social spheres can be both supportive of and problematic for engaging in DSM. In addition, the structure and sequence of competing daily occupations influences the available time and opportunities for people to further develop their skills and become more adept self-managers. Conclusions The implications of these findings for occupational science and therapy are discussed. PMID:24329181

Anxiolytic-like effect of inhalation of essential oil from Lavandula officinalis: investigation of changes in 5-HT turnover and involvement of olfactory stimulation.

PubMed

Takahashi, Mizuho; Yamanaka, Ayako; Asanuma, Chihiro; Asano, Hiroko; Satou, Tadaaki; Koike, Kazuo

2014-07-01

Essential oil extracted from Lavandula officinalis (LvEO) has a long history of usage in anxiety alleviation with good evidence to support its use. However, findings and information regarding the exact pathway involved and mechanism of action remain inconclusive. Therefore, we aimed to (1) reveal the influence of olfactory stimulation, and (2) determine whether the serotonergic system is involved in the anxiolytic effect of LvEO when it is inhaled. To this end, we first compared the anxiety-related behaviors of normosmic and anosmic mice. LvEO inhalation caused notable elevation in anxiety-related parameters with or without olfactory perception, indicating that olfactory stimulation is not necessarily required for LvEO to be effective. Neurochemical analysis of the serotonin (5-HT) turnover rate, accompanied by EPM testing, was then performed. LvEO significantly increased the striatal and hippocampal levels of 5-HT and decreased turnover rates in accordance with the anxiolytic behavioral changes. These results, together with previous findings, support the hypothesis that serotonergic neurotransmission plays a certain role in the anxiolytic properties of LvEO.

Supporting graduate nurse transition to practice through a quality assurance feedback loop.

PubMed

Phillips, Craig; Kenny, Amanda; Esterman, Adrian

2017-11-01

This mixed-method study focused on new graduate nurses and their transition to practice. Transition to practice can be a time of heightened stress and anxiety, leaving many new graduates disillusioned and dissatisfied with their work. The study explored how satisfaction levels with transition may improve during their first year, using a unique approach of a continuous quality assurance feedback loop. This assurance framework is utilised in hospitality, automotive and supply chain logistics and in health, primarily to monitor patient outcomes. However, an association with graduate nurse satisfaction has not been previously reported. Graduate nurses from two health services completed a short survey questionnaire every four weeks for 12 months. De-identified aggregated data was sent to health service management, giving them an opportunity to integrate the findings with the objective of potentially increasing graduate satisfaction ratings. Quantitative findings showed no statistical significance of graduate nurse satisfaction scores between health services, however, one health service consistently outperformed the other. Qualitative findings drawn from a seminar and interviews confirmed that one health service took a more proactive stance with the monthly reports, communicating the results to ward managers. Outcomes reflected a greater commitment of support and an overall increase of satisfaction scores. Copyright © 2017 Elsevier Ltd. All rights reserved.

Science on a Shoestring: Building Nursing Knowledge With Limited Funding.

PubMed

Conn, Vicki S; Topp, Robert; Dunn, Susan L; Hopp, Lisa; Jadack, Rosemary; Jansen, Debra A; Jefferson, Urmeka T; Moch, Susan Diemert

2015-10-01

Building the science for nursing practice has never been more important. However, shrunken federal and state research budgets mean that investigators must find alternative sources of financial support and develop projects that are less costly to carry out. New investigators often build beginning programs of research with limited funding. This article provides an overview of some cost-effective research approaches and gives suggestions for finding other sources of funding. Examples of more cost-effective research approaches include adding complementary questions to existing funded research projects; conducting primary analysis of electronic patient records and social media content; conducting secondary analysis of data from completed studies; reviewing and synthesizing previously completed research; implementing community-based participatory research; participating in collaborative research efforts such as inter-campus team research, practice-based research networks (PBRNs), and involving undergraduate and doctoral students in research efforts. Instead of relying on funding from the National Institutes of Health (NIH) and other government agencies, nurse researchers may be able to find support for research from local sources such as businesses, organizations, or clinical agencies. Investigators will increasingly have to rely on these and other creative approaches to fund and implement their research programs if granting agency budgets do not significantly expand. © The Author(s) 2015.

Impact of Health Information Exchange on Emergency Medicine Clinical Decision Making.

PubMed

Gordon, Bradley D; Bernard, Kyle; Salzman, Josh; Whitebird, Robin R

2015-12-01

The objective of the study was to understand the immediate utility of health information exchange (HIE) on emergency department (ED) providers by interviewing them shortly after the information was retrieved. Prior studies of physician perceptions regarding HIE have only been performed outside of the care environment. Trained research assistants interviewed resident physicians, physician assistants and attending physicians using a semi-structured questionnaire within two hours of making a HIE request. The responses were recorded, then transcribed for qualitative analysis. The transcribed interviews were analyzed for emerging qualitative themes. We analyzed 40 interviews obtained from 29 providers. Primary qualitative themes discovered included the following: drivers for requests for outside information; the importance of unexpected information; historical lab values as reference points; providing context when determining whether to admit or discharge a patient; the importance of information in refining disposition; improved confidence of provider; and changes in decisions for diagnostic imaging. ED providers are driven to use HIE when they're missing a known piece of information. This study finds two additional impacts not previously reported. First, providers sometimes find additional unanticipated useful information, supporting a workflow that lowers the threshold to request external information. Second, providers sometimes report utility when no changes to their existing plan are made as their confidence is increased based on external records. Our findings are concordant with previous studies in finding exchanged information is useful to provide context for interpreting lab results, making admission decisions, and prevents repeat diagnostic imaging.

Translating research findings into practice – the implementation of kangaroo mother care in Ghana

PubMed Central

2012-01-01

Background Kangaroo mother care (KMC) is a safe and effective method of caring for low birth weight infants and is promoted for its potential to improve newborn survival. Many countries find it difficult to take KMC to scale in healthcare facilities providing newborn care. KMC Ghana was an initiative to scale up KMC in four regions in Ghana. Research findings from two outreach trials in South Africa informed the design of the initiative. Two key points of departure were to equip healthcare facilities that conduct deliveries with the necessary skills for KMC practice and to single out KMC for special attention instead of embedding it in other newborn care initiatives. This paper describes the contextualisation and practical application of previous research findings and the results of monitoring the progress of the implementation of KMC in Ghana. Methods A three-phase outreach intervention was adapted from previous research findings to suit the local setting. A more structured system of KMC regional steering committees was introduced to drive the process and take the initiative forward. During Phase I, health workers in regions and districts were oriented in KMC and received basic support for the management of the outreach. Phase II entailed the strengthening of the regional steering committees. Phase III comprised a more formal assessment, utilising a previously validated KMC progress-monitoring instrument. Results Twenty-six out of 38 hospitals (68 %) scored over 10 out of 30 and had reached the level of ‘evidence of practice’ by the end of Phase III. Seven hospitals exceeded expected performance by scoring at the level of ‘evidence of routine and institutionalised practice.’ The collective mean score for all participating hospitals was 12.07. Hospitals that had attained baby-friendly status or had been re-accredited in the five years before the intervention scored significantly better than the rest, with a mean score of 14.64. Conclusion The KMC Ghana initiative demonstrated how research findings regarding successful outreach for the implementation of KMC could be transferred to a different context by making context-appropriate adaptations to the model. PMID:22889113

Translating research findings into practice--the implementation of kangaroo mother care in Ghana.

PubMed

Bergh, Anne-Marie; Manu, Rhoda; Davy, Karen; van Rooyen, Elise; Asare, Gloria Quansah; Williams, J Koku Awoonor; Dedzo, McDamien; Twumasi, Akwasi; Nang-Beifubah, Alexis

2012-08-13

Kangaroo mother care (KMC) is a safe and effective method of caring for low birth weight infants and is promoted for its potential to improve newborn survival. Many countries find it difficult to take KMC to scale in healthcare facilities providing newborn care. KMC Ghana was an initiative to scale up KMC in four regions in Ghana. Research findings from two outreach trials in South Africa informed the design of the initiative. Two key points of departure were to equip healthcare facilities that conduct deliveries with the necessary skills for KMC practice and to single out KMC for special attention instead of embedding it in other newborn care initiatives. This paper describes the contextualisation and practical application of previous research findings and the results of monitoring the progress of the implementation of KMC in Ghana. A three-phase outreach intervention was adapted from previous research findings to suit the local setting. A more structured system of KMC regional steering committees was introduced to drive the process and take the initiative forward. During Phase I, health workers in regions and districts were oriented in KMC and received basic support for the management of the outreach. Phase II entailed the strengthening of the regional steering committees. Phase III comprised a more formal assessment, utilising a previously validated KMC progress-monitoring instrument. Twenty-six out of 38 hospitals (68 %) scored over 10 out of 30 and had reached the level of 'evidence of practice' by the end of Phase III. Seven hospitals exceeded expected performance by scoring at the level of 'evidence of routine and institutionalised practice.' The collective mean score for all participating hospitals was 12.07. Hospitals that had attained baby-friendly status or had been re-accredited in the five years before the intervention scored significantly better than the rest, with a mean score of 14.64. The KMC Ghana initiative demonstrated how research findings regarding successful outreach for the implementation of KMC could be transferred to a different context by making context-appropriate adaptations to the model.

A Molecular Phylogeny for Yponomeutoidea (Insecta, Lepidoptera, Ditrysia) and Its Implications for Classification, Biogeography and the Evolution of Host Plant Use

PubMed Central

Sohn, Jae-Cheon; Regier, Jerome C.; Mitter, Charles; Davis, Donald; Landry, Jean-François; Zwick, Andreas; Cummings, Michael P.

2013-01-01

Background Yponomeutoidea, one of the early-diverging lineages of ditrysian Lepidoptera, comprise about 1,800 species worldwide, including notable pests and insect-plant interaction models. Yponomeutoids were one of the earliest lepidopteran clades to evolve external feeding and to extensively colonize herbaceous angiosperms. Despite the group’s economic importance, and its value for tracing early lepidopteran evolution, the biodiversity and phylogeny of Yponomeutoidea have been relatively little studied. Methodology/Principal Findings Eight nuclear genes (8 kb) were initially sequenced for 86 putative yponomeutoid species, spanning all previously recognized suprageneric groups, and 53 outgroups representing 22 families and 12 superfamilies. Eleven to 19 additional genes, yielding a total of 14.8 to 18.9 kb, were then sampled for a subset of taxa, including 28 yponomeutoids and 43 outgroups. Maximum likelihood analyses were conducted on data sets differing in numbers of genes, matrix completeness, inclusion/weighting of synonymous substitutions, and inclusion/exclusion of “rogue” taxa. Monophyly for Yponomeutoidea was supported very strongly when the 18 “rogue” taxa were excluded, and moderately otherwise. Results from different analyses are highly congruent and relationships within Yponomeutoidea are well supported overall. There is strong support overall for monophyly of families previously recognized on morphological grounds, including Yponomeutidae, Ypsolophidae, Plutellidae, Glyphipterigidae, Argyresthiidae, Attevidae, Praydidae, Heliodinidae, and Bedelliidae. We also assign family rank to Scythropiinae (Scythropiidae stat. rev.), which in our trees are strongly grouped with Bedelliidae, in contrast to all previous proposals. We present a working hypothesis of among-family relationships, and an informal higher classification. Host plant family associations of yponomeutoid subfamilies and families are non-random, but show no trends suggesting parallel phylogenesis. Our analyses suggest that previous characterizations of yponomeutoids as predominantly Holarctic were based on insufficient sampling. Conclusions/Significance We provide the first robust molecular phylogeny for Yponomeutoidea, together with a revised classification and new insights into their life history evolution and biogeography. PMID:23383061

The origin and early evolution of Sauria: reassessing the permian Saurian fossil record and the timing of the crocodile-lizard divergence.

PubMed

Ezcurra, Martín D; Scheyer, Torsten M; Butler, Richard J

2014-01-01

Sauria is the crown-group of Diapsida and is subdivided into Lepidosauromorpha and Archosauromorpha, comprising a high percentage of the diversity of living and fossil tetrapods. The split between lepidosauromorphs and archosauromorphs (the crocodile-lizard, or bird-lizard, divergence) is considered one of the key calibration points for molecular analyses of tetrapod phylogeny. Saurians have a very rich Mesozoic and Cenozoic fossil record, but their late Paleozoic (Permian) record is problematic. Several Permian specimens have been referred to Sauria, but the phylogenetic affinity of some of these records remains questionable. We reexamine and review all of these specimens here, providing new data on early saurian evolution including osteohistology, and present a new morphological phylogenetic dataset. We support previous studies that find that no valid Permian record for Lepidosauromorpha, and we also reject some of the previous referrals of Permian specimens to Archosauromorpha. The most informative Permian archosauromorph is Protorosaurus speneri from the middle Late Permian of Western Europe. A historically problematic specimen from the Late Permian of Tanzania is redescribed and reidentified as a new genus and species of basal archosauromorph: Aenigmastropheus parringtoni. The supposed protorosaur Eorasaurus olsoni from the Late Permian of Russia is recovered among Archosauriformes and may be the oldest known member of the group but the phylogenetic support for this position is low. The assignment of Archosaurus rossicus from the latest Permian of Russia to the archosauromorph clade Proterosuchidae is supported. Our revision suggests a minimum fossil calibration date for the crocodile-lizard split of 254.7 Ma. The occurrences of basal archosauromorphs in the northern (30°N) and southern (55°S) parts of Pangea imply a wider paleobiogeographic distribution for the group during the Late Permian than previously appreciated. Early archosauromorph growth strategies appear to be more diverse than previously suggested based on new data on the osteohistology of Aenigmastropheus.

The Origin and Early Evolution of Sauria: Reassessing the Permian Saurian Fossil Record and the Timing of the Crocodile-Lizard Divergence

PubMed Central

Ezcurra, Martín D.; Scheyer, Torsten M.; Butler, Richard J.

2014-01-01

Sauria is the crown-group of Diapsida and is subdivided into Lepidosauromorpha and Archosauromorpha, comprising a high percentage of the diversity of living and fossil tetrapods. The split between lepidosauromorphs and archosauromorphs (the crocodile-lizard, or bird-lizard, divergence) is considered one of the key calibration points for molecular analyses of tetrapod phylogeny. Saurians have a very rich Mesozoic and Cenozoic fossil record, but their late Paleozoic (Permian) record is problematic. Several Permian specimens have been referred to Sauria, but the phylogenetic affinity of some of these records remains questionable. We reexamine and review all of these specimens here, providing new data on early saurian evolution including osteohistology, and present a new morphological phylogenetic dataset. We support previous studies that find that no valid Permian record for Lepidosauromorpha, and we also reject some of the previous referrals of Permian specimens to Archosauromorpha. The most informative Permian archosauromorph is Protorosaurus speneri from the middle Late Permian of Western Europe. A historically problematic specimen from the Late Permian of Tanzania is redescribed and reidentified as a new genus and species of basal archosauromorph: Aenigmastropheus parringtoni. The supposed protorosaur Eorasaurus olsoni from the Late Permian of Russia is recovered among Archosauriformes and may be the oldest known member of the group but the phylogenetic support for this position is low. The assignment of Archosaurus rossicus from the latest Permian of Russia to the archosauromorph clade Proterosuchidae is supported. Our revision suggests a minimum fossil calibration date for the crocodile-lizard split of 254.7 Ma. The occurrences of basal archosauromorphs in the northern (30°N) and southern (55°S) parts of Pangea imply a wider paleobiogeographic distribution for the group during the Late Permian than previously appreciated. Early archosauromorph growth strategies appear to be more diverse than previously suggested based on new data on the osteohistology of Aenigmastropheus. PMID:24586565

A study of the mortality of Cornish tin miners.

PubMed Central

Fox, A J; Goldlbatt, P; Kinlen, L J

1981-01-01

Increased mortality from cancer of the lung has been found in several studies of miners exposed to high levels of radioactivity in underground air. In view of their exposure to raised levels of radiation, we have studied the mortality of a group of men recorded as Cornish tin miners in 1939. Using occupational description, a crude classification of exposure was derived for these miners. The meaningfulness of this classification was supported by differences in mortality from silicosis and silicotuberculosis. A twofold excess of cancer of the lung was found for underground miners, while for other categories mortality from this cause was less than expected. This supports the findings of previous studies on exposure to radon and its daughters. An excess of cancer of the stomach was also observed among underground miners. PMID:7317301

Magnetic correlates in electromagnetic consciousness.

PubMed

Liboff, A R

2016-01-01

We examine the hypothesis that consciousness is a manifestation of the electromagnetic field, finding supportive factors not previously considered. It is not likely that traditional electrophysiological signaling modes can be readily transmitted throughout the brain to properly enable this field because of electric field screening arising from the ubiquitous distribution of high dielectric lipid membranes, a problem that vanishes for low-frequency magnetic fields. Many reports over the last few decades have provided evidence that living tissue is robustly sensitive to ultrasmall (1-100 nT) ELF magnetic fields overlapping the γ-frequency range often associated with awareness. An example taken from animal behavior (coherent bird flocking) lends support to the possibility of a disembodied electromagnetic consciousness. In contrast to quantum consciousness hypotheses, the present approach is open to experimental trial.

Perceptions of the Neighborhood Environment and Children's Afterschool Moderate-to-Vigorous Physical Activity.

PubMed

McDonald, Samantha; Dowda, Marsha; Colabianchi, Natalie; Porter, Dwayne; Dishman, Rod K; Pate, Russell R

2015-05-01

Previous research suggests the neighborhood environment may be an important influence on children's physical activity (PA) behaviors; however, findings are inconsistent. The purpose of this study was to further understand the relationship between perceptions of the neighborhood environment and children's afterschool moderate-to-vigorous PA. Utilizing a structural equation modeling technique, we tested a conceptual model linking parent and child perceptions of the neighborhood environment, parent support for PA, and child outdoor PA with children's afterschool moderate-to vigorous PA. We found that child perception of the neighborhood environment and outdoor PA were positively associated with afterschool moderate-to-vigorous PA. In addition, parent support for PA positively influenced children's outdoor PA. The neighborhood environment and outdoor activity appear to play an influential role on children's afterschool PA behaviors.

PREditOR: a synthetic biology approach to removing heterochromatin from cells.

PubMed

Molina, Oscar; Carmena, Mar; Maudlin, Isabella E; Earnshaw, William C

2016-12-01

It is widely accepted that heterochromatin is necessary to maintain genomic stability. However, direct experimental evidence supporting this is slim. Previous studies using either enzyme inhibitors, gene knockout or knockdown studies all are subject to the caveat that drugs may have off-target effects and enzymes that modify chromatin proteins to support heterochromatin formation may also have numerous other cellular targets as well. Here, we describe PREditOR (protein reading and editing of residues), a synthetic biology approach that allows us to directly remove heterochromatin from cells without either drugs or global interference with gene function. We find that removal of heterochromatin perturbs mitotic progression and causes a dramatic increase in chromosome segregation defects, possibly as a result of interfering with the normal centromeric localization of the chromosomal passenger complex.

Transmission and reassortment of avian influenza viruses at the Asian-North American interface

USGS Publications Warehouse

Ramey, Andrew M.; Pearce, John M.; Ely, Craig R.; Guy, Lisa M. Sheffield; Irons, David B.; Derksen, Dirk V.; Ip, Hon S.

2010-01-01

Twenty avian influenza viruses were isolated from seven wild migratory bird species sampled at St. Lawrence Island, Alaska. We tested predictions based on previous phylogenetic analyses of avian influenza viruses that support spatially dependent trans-hemispheric gene flow and frequent interspecies transmission at a location situated at the Asian–North American interface. Through the application of phylogenetic and genotypic approaches, our data support functional dilution by distance of trans-hemispheric reassortants and interspecific virus transmission. Our study confirms infection of divergent avian taxa with nearly identical avian influenza strains in the wild. Findings also suggest that H16N3 viruses may contain gene segments with unique phylogenetic positions and that further investigation of how host specificity may impact transmission of H13 and H16 viruses is warranted.

Suppressing hillock formation in Si-supported pure Al films

NASA Astrophysics Data System (ADS)

Liu, N. Z.; Liu, Y.

2018-04-01

To suppress the hillock formation and hence improve the service performance of pure Al thin films deposited on Si substrate, dependence of hillock formation on film thickness and annealing temperature was systematically investigated. Experimental results revealed that the hillock volume increased linearly with both the film thickness and annealing temperature. While the evolution of hillock density with film thickness was complicated, strongly depending on the annealing temperature. It was evident that the hillock formation could be effectively suppressed at a critical annealing temperature especially in thinner thickness, similar to the previous findings in Mo/glass-supported pure Al films. These experimental evidences clearly demonstrated that the hillock formation should be controlled by the plastic deformation in the surrounding film, which was further rationalized by a micromechanics model.

Teachers' Perceptions about the Barriers and Catalysts for Effective Practices with ICT in Primary Schools

NASA Astrophysics Data System (ADS)

Dakich, Eva

This paper presents perceptions of four primary school teachers from two Victorian government primary schools about the barriers and catalyst for effective practices with ICT. Findings of the semi-structured qualitative interviews confirm results of previous studies indicating that access to reliable infrastructure, adequate technical support, and time pressures are still considered to be some of the most significant barriers to successful ICT integration in public schools. Teacher interviews however also reveal that the challenges of integrating ICT in teaching and learning can be counterbalanced by a number of variables, which include: owning a laptop, having access to ongoing professional learning, sharing effective practices, drawing on student expertise and being supported by a whole-school approach to teaching and learning with ICT.

Mitochondrial nucleoid interacting proteins support mitochondrial protein synthesis.

PubMed

He, J; Cooper, H M; Reyes, A; Di Re, M; Sembongi, H; Litwin, T R; Gao, J; Neuman, K C; Fearnley, I M; Spinazzola, A; Walker, J E; Holt, I J

2012-07-01

Mitochondrial ribosomes and translation factors co-purify with mitochondrial nucleoids of human cells, based on affinity protein purification of tagged mitochondrial DNA binding proteins. Among the most frequently identified proteins were ATAD3 and prohibitin, which have been identified previously as nucleoid components, using a variety of methods. Both proteins are demonstrated to be required for mitochondrial protein synthesis in human cultured cells, and the major binding partner of ATAD3 is the mitochondrial ribosome. Altered ATAD3 expression also perturbs mtDNA maintenance and replication. These findings suggest an intimate association between nucleoids and the machinery of protein synthesis in mitochondria. ATAD3 and prohibitin are tightly associated with the mitochondrial membranes and so we propose that they support nucleic acid complexes at the inner membrane of the mitochondrion.

The Sex Determination Gene Shows No Founder Effect in the Giant Honey Bee, Apis dorsata

PubMed Central

Yan, Wei Yu; Wu, Xiao Bo; Zeng, Zhi Jiang; Huang, Zachary Y.

2012-01-01

Background All honey bee species (Apis spp) share the same sex determination mechanism using the complementary sex determination (csd) gene. Only individuals heterogeneous at the csd allele develop into females, and the homozygous develop into diploid males, which do not survive. The honeybees are therefore under selection pressure to generate new csd alleles. Previous studies have shown that the csd gene is under balancing selection. We hypothesize that due to the long separation from the mainland of Hainan Island, China, that the giant honey bees (Apis dorsata) should show a founder effect for the csd gene, with many different alleles clustered together, and these would be absent on the mainland. Methodology/Principal Findings We sampled A. dorsata workers from both Hainan and Guangxi Provinces and then cloned and sequenced region 3 of the csd gene and constructed phylogenetic trees. We failed to find any clustering of the csd alleles according to their geographical origin, i.e. the Hainan and Guangxi samples did not form separate clades. Further analysis by including previously published csd sequences also failed to show any clade-forming in both the Philippines and Malaysia. Conclusions/Significance Results from this study and those from previous studies did not support the expectations of a founder effect. We conclude that because of the extremely high mating frequency of A. dorsata queens, a founder effect does not apply in this species. PMID:22511940

Learned perceptual associations influence visuomotor programming under limited conditions: kinematic consistency.

PubMed

Haffenden, Angela M; Goodale, Melvyn A

2002-12-01

Previous findings have suggested that visuomotor programming can make use of learned size information in experimental paradigms where movement kinematics are quite consistent from trial to trial. The present experiment was designed to test whether or not this conclusion could be generalized to a different manipulation of kinematic variability. As in previous work, an association was established between the size and colour of square blocks (e.g. red = large; yellow = small, or vice versa). Associating size and colour in this fashion has been shown to reliably alter the perceived size of two test blocks halfway in size between the large and small blocks: estimations of the test block matched in colour to the group of large blocks are smaller than estimations of the test block matched to the group of small blocks. Subjects grasped the blocks, and on other trials estimated the size of the blocks. These changes in perceived block size were incorporated into grip scaling only when movement kinematics were highly consistent from trial to trial; that is, when the blocks were presented in the same location on each trial. When the blocks were presented in different locations grip scaling remained true to the metrics of the test blocks despite the changes in perceptual estimates of block size. These results support previous findings suggesting that kinematic consistency facilitates the incorporation of learned perceptual information into grip scaling.

Gene-centric meta-analysis in 87,736 individuals of European ancestry identifies multiple blood-pressure-related loci.

PubMed

Tragante, Vinicius; Barnes, Michael R; Ganesh, Santhi K; Lanktree, Matthew B; Guo, Wei; Franceschini, Nora; Smith, Erin N; Johnson, Toby; Holmes, Michael V; Padmanabhan, Sandosh; Karczewski, Konrad J; Almoguera, Berta; Barnard, John; Baumert, Jens; Chang, Yen-Pei Christy; Elbers, Clara C; Farrall, Martin; Fischer, Mary E; Gaunt, Tom R; Gho, Johannes M I H; Gieger, Christian; Goel, Anuj; Gong, Yan; Isaacs, Aaron; Kleber, Marcus E; Mateo Leach, Irene; McDonough, Caitrin W; Meijs, Matthijs F L; Melander, Olle; Nelson, Christopher P; Nolte, Ilja M; Pankratz, Nathan; Price, Tom S; Shaffer, Jonathan; Shah, Sonia; Tomaszewski, Maciej; van der Most, Peter J; Van Iperen, Erik P A; Vonk, Judith M; Witkowska, Kate; Wong, Caroline O L; Zhang, Li; Beitelshees, Amber L; Berenson, Gerald S; Bhatt, Deepak L; Brown, Morris; Burt, Amber; Cooper-DeHoff, Rhonda M; Connell, John M; Cruickshanks, Karen J; Curtis, Sean P; Davey-Smith, George; Delles, Christian; Gansevoort, Ron T; Guo, Xiuqing; Haiqing, Shen; Hastie, Claire E; Hofker, Marten H; Hovingh, G Kees; Kim, Daniel S; Kirkland, Susan A; Klein, Barbara E; Klein, Ronald; Li, Yun R; Maiwald, Steffi; Newton-Cheh, Christopher; O'Brien, Eoin T; Onland-Moret, N Charlotte; Palmas, Walter; Parsa, Afshin; Penninx, Brenda W; Pettinger, Mary; Vasan, Ramachandran S; Ranchalis, Jane E; M Ridker, Paul; Rose, Lynda M; Sever, Peter; Shimbo, Daichi; Steele, Laura; Stolk, Ronald P; Thorand, Barbara; Trip, Mieke D; van Duijn, Cornelia M; Verschuren, W Monique; Wijmenga, Cisca; Wyatt, Sharon; Young, J Hunter; Zwinderman, Aeilko H; Bezzina, Connie R; Boerwinkle, Eric; Casas, Juan P; Caulfield, Mark J; Chakravarti, Aravinda; Chasman, Daniel I; Davidson, Karina W; Doevendans, Pieter A; Dominiczak, Anna F; FitzGerald, Garret A; Gums, John G; Fornage, Myriam; Hakonarson, Hakon; Halder, Indrani; Hillege, Hans L; Illig, Thomas; Jarvik, Gail P; Johnson, Julie A; Kastelein, John J P; Koenig, Wolfgang; Kumari, Meena; März, Winfried; Murray, Sarah S; O'Connell, Jeffery R; Oldehinkel, Albertine J; Pankow, James S; Rader, Daniel J; Redline, Susan; Reilly, Muredach P; Schadt, Eric E; Kottke-Marchant, Kandice; Snieder, Harold; Snyder, Michael; Stanton, Alice V; Tobin, Martin D; Uitterlinden, André G; van der Harst, Pim; van der Schouw, Yvonne T; Samani, Nilesh J; Watkins, Hugh; Johnson, Andrew D; Reiner, Alex P; Zhu, Xiaofeng; de Bakker, Paul I W; Levy, Daniel; Asselbergs, Folkert W; Munroe, Patricia B; Keating, Brendan J

2014-03-06

Blood pressure (BP) is a heritable risk factor for cardiovascular disease. To investigate genetic associations with systolic BP (SBP), diastolic BP (DBP), mean arterial pressure (MAP), and pulse pressure (PP), we genotyped ~50,000 SNPs in up to 87,736 individuals of European ancestry and combined these in a meta-analysis. We replicated findings in an independent set of 68,368 individuals of European ancestry. Our analyses identified 11 previously undescribed associations in independent loci containing 31 genes including PDE1A, HLA-DQB1, CDK6, PRKAG2, VCL, H19, NUCB2, RELA, HOXC@ complex, FBN1, and NFAT5 at the Bonferroni-corrected array-wide significance threshold (p < 6 × 10(-7)) and confirmed 27 previously reported associations. Bioinformatic analysis of the 11 loci provided support for a putative role in hypertension of several genes, such as CDK6 and NUCB2. Analysis of potential pharmacological targets in databases of small molecules showed that ten of the genes are predicted to be a target for small molecules. In summary, we identified previously unknown loci associated with BP. Our findings extend our understanding of genes involved in BP regulation, which may provide new targets for therapeutic intervention or drug response stratification. Copyright © 2014 The American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.

Functional connectivity of hippocampal and prefrontal networks during episodic and spatial memory based on real-world environments.

PubMed

Robin, Jessica; Hirshhorn, Marnie; Rosenbaum, R Shayna; Winocur, Gordon; Moscovitch, Morris; Grady, Cheryl L

2015-01-01

Several recent studies have compared episodic and spatial memory in neuroimaging paradigms in order to understand better the contribution of the hippocampus to each of these tasks. In the present study, we build on previous findings showing common neural activation in default network areas during episodic and spatial memory tasks based on familiar, real-world environments (Hirshhorn et al. (2012) Neuropsychologia 50:3094-3106). Following previous demonstrations of the presence of functionally connected sub-networks within the default network, we performed seed-based functional connectivity analyses to determine how, depending on the task, the hippocampus and prefrontal cortex differentially couple with one another and with distinct whole-brain networks. We found evidence for a medial prefrontal-parietal network and a medial temporal lobe network, which were functionally connected to the prefrontal and hippocampal seeds, respectively, regardless of the nature of the memory task. However, these two networks were functionally connected with one another during the episodic memory task, but not during spatial memory tasks. Replicating previous reports of fractionation of the default network into stable sub-networks, this study also shows how these sub-networks may flexibly couple and uncouple with one another based on task demands. These findings support the hypothesis that episodic memory and spatial memory share a common medial temporal lobe-based neural substrate, with episodic memory recruiting additional prefrontal sub-networks. © 2014 Wiley Periodicals, Inc.

Is Support of Censoring Controversial Media Content for the Good of Others? Sexual Strategies and Support of Censoring Pro-Alcohol Advertising.

PubMed

Zhang, Jinguang

2017-01-01

At least in the United States, there are widespread concerns with advertising that encourages alcohol consumption, and previous research explains those concerns as aiming to protect others from the harm of excessive alcohol use. 1 Drawing on sexual strategies theory, we hypothesized that support of censoring pro-alcohol advertising is ultimately self-benefiting regardless of its altruistic effect at a proximate level. Excessive drinking positively correlates with having casual sex, and casual sex threatens monogamy, one of the major means with which people adopting a long-term sexual strategy increase their inclusive fitness. Then, one way for long-term strategists to protect monogamy, and thus their reproductive interest is to support censoring pro-alcohol advertising, thereby preventing others from becoming excessive drinkers (and consequently having casual sex) under media influence. Supporting this hypothesis, three studies consistently showed that restricted sociosexuality positively correlated with support of censoring pro-alcohol advertising before and after various value-, ideological-, and moral-foundation variables were controlled for. Also as predicted, Study 3 revealed a significant indirect effect of sociosexuality on censorship support through perceived media influence on others but not through perceived media influence on self. These findings further supported a self-interest analysis of issue opinions, extended third-person-effect research on support of censoring pro-alcohol advertising, and suggested a novel approach to analyzing media censorship support.

Social support and subsequent disability: it is not the size of your network that counts.

PubMed

McLaughlin, Deirdre; Leung, Janni; Pachana, Nancy; Flicker, Leon; Hankey, Graeme; Dobson, Annette

2012-09-01

high levels of social support and engagement may help sustain good health and functional ability. However, the definition of social support in previous research has been inconsistent and findings are mixed. The aim of this analysis was to explore the effect of two aspects of social support on subsequent disability in a group of community dwelling older women and men. data were drawn from two concurrent prospective observational cohort studies of community-based older Australian women (N = 2,013) and men (N = 680). Baseline and follow-up data were drawn from the second (1999) and fifth (2008) surveys of the women and the second (2001) and third (2008) surveys of the men. At baseline, social support was measured by the two subscales (social network and subjective support) of the Duke Social Support Index (DSSI). The outcome measure was Activities of Daily Living (ADLs) and Instrumental Activities of Daily Living (IADLs). overall, social network size was not associated with subsequent disability in either women or men. After adjusting for health status at baseline, lack of satisfaction with social support was associated with greater difficulties in ADLs and IADLs for both women and men. our results suggest that the provision of social support is insufficient to limit subsequent disability: support provided must be subjectively perceived to be relevant and adequate.

Feasibility trial of GP and case-managed support for workplace sickness absence.

PubMed

Rannard, Anne; Gabbay, Mark; Sen, Dil; Riley, Richard; Britt, David

2014-07-01

Aim Our aim was to compare the return-to-work rates between individuals supported by their GP plus workplace health advisers (intervention group) and those supported by their GP alone. Workplace sickness absence places a significant cost burden on individuals and the wider economy. Previous research shows better outcomes for individuals if they are supported while still in employment, or have been on sick leave for four weeks or less. Those helped back to work at an early stage are more likely to remain at work. A non-medicalised case-managed approach appears to have the best outcomes and can prevent or reduce the slide onto out-of-work benefits, but UK literature on its effectiveness is sparse. The design was a feasibility-controlled trial in which participants were sickness absentees, or presentees in employment with work-related health problems. Individuals completed health status measures (SF-36; EQ-5D) and a Job Content Questionnaire at baseline and again at four-month follow-up. Findings In the intervention group, 29/60 participants completed both phases of the trial. GP practices referred two control patients, and, despite various attempts by the research team, GPs failed to engage with the trial. This finding is of concern, although not unique in primary care research. In earlier studies, GPs reported a lack of knowledge and confidence in dealing with workplace health issues. Despite this, we report interesting findings from the case-managed group, the majority of whom returned to work within a month. Age and length of sickness absence at recruitment were better predictors of return-to-work rates than the number of case-managed contacts. The traditional randomised controlled trial approach was unsuitable for this study. GPs showed low interest in workplace sickness absence, despite their pivotal role in the process. This study informed a larger Department for Work and Pensions study of case-managed support.

The role of the human hippocampus in familiarity-based and recollection-based recognition memory

PubMed Central

Wixted, John T.; Squire, Larry R.

2010-01-01

The ability to recognize a previously encountered stimulus is dependent on the structures of the medial temporal lobe and is thought to be supported by two processes, recollection and familiarity. A focus of research in recent years concerns the extent to which these two processes depend on the hippocampus and on the other structures of the medial temporal lobe. One view holds that the hippocampus is important for both processes, whereas a different view holds that the hippocampus supports only the recollection process and the perirhinal cortex supports the familiarity process. One approach has been to study patients with hippocampal lesions and to contrast old/new recognition (which can be supported by familiarity) to free recall (which is supported by recollection). Despite some early case studies suggesting otherwise, several group studies have now shown that hippocampal patients exhibit comparable impairments on old/new recognition and free recall. These findings suggest that the hippocampus is important for both recollection and familiarity. Neuroimaging studies and Receiver Operating Characteristic analyses also initially suggested that the hippocampus was specialized for recollection, but these studies involved a strength confound (strong memories have been compared to weak memories). When steps are taken to compare strong recollection-based memories with strong familiarity-based memories, or otherwise control for memory strength, evidence for a familiarity signal (as well as a recollection signal) is evident in the hippocampus. These findings suggest that the functional organization of the medial temporal lobe is probably best understood in terms unrelated to the distinction between recollection and familiarity. PMID:20412819

Differences between Supportive Music and Imagery and Music Listening during Outpatient Chemotherapy and Potential Moderators of Treatment Effects.

PubMed

Burns, Debra S; Meadows, Anthony N; Althouse, Sandra; Perkins, Susan M; Cripe, Larry D

2018-03-09

Supportive music and imagery and music listening interventions have been effective in decreasing distress and improving mood in cancer patients receiving chemotherapy, but it is unclear whether the two interventions differ in their treatment benefits. Furthermore, previous studies have not examined moderators to determine which subgroup(s) of patients may benefit most from each intervention. To examine the effects of supportive music and imagery compared with preferred music listening on responsiveness to music therapy, distress, anxiety and depression, and benefit finding. A secondary purpose was to explore sense of coherence and locus of control as potential moderators of intervention effectiveness. A single-session, two-group comparative effectiveness randomized trial in two cancer centers. Patients were randomized to supportive music and imagery or preferred music listening during outpatient chemotherapy treatment. Data were collected at baseline and immediately after the 45-minute session. ANCOVA models were used to determine main effects of intervention as well as pairing potential moderators with group assignment to explore differences in intervention effects by moderator. There were differential effects between the two interventions with the supportive music and imagery group scoring higher in responsiveness to music therapy and benefit finding. The music listening group scores indicated lower distress. The exploratory moderating analyses suggested Health Locus of Control-Internal and Sense of Coherence influenced intervention effectiveness. Music and imagery and preferred music listening experiences may serve different therapeutic purposes, access and activate different patient resources, and may be helpful at different stages of treatment.

Methodological support for the further abstraction of and philosophical examination of empirical findings in the context of caring science.

PubMed

Lindberg, Elisabeth; Österberg, Sofia A; Hörberg, Ulrica

2016-01-01

Phenomena in caring science are often complex and laden with meanings. Empirical research with the aim of capturing lived experiences is one way of revealing the complexity. Sometimes, however, results from empirical research need to be further discussed. One way is to further abstract the result and/or philosophically examine it. This has previously been performed and presented in scientific journals and doctoral theses, contributing to a greater understanding of phenomena in caring science. Although the intentions in many of these publications are laudable, the lack of methodological descriptions as well as a theoretical and systematic foundation can contribute to an ambiguity concerning how the results have emerged during the analysis. The aim of this paper is to describe the methodological support for the further abstraction of and/or philosophical examination of empirical findings. When trying to systematize the support procedures, we have used a reflective lifeworld research (RLR) approach. Based on the assumptions in RLR, this article will present methodological support for a theoretical examination that can include two stages. In the first stage, data from several (two or more) empirical results on an essential level are synthesized into a general structure. Sometimes the analysis ends with the general structure, but sometimes there is a need to proceed further. The second stage can then be a philosophical examination, in which the general structure is discussed in relation to a philosophical text, theory, or concept. It is important that the theories are brought in as the final stage after the completion of the analysis. Core dimensions of the described methodological support are, in accordance with RLR, openness, bridling, and reflection. The methodological support cannot be understood as fixed stages, but rather as a guiding light in the search for further meanings.

“It’s alright to ask for help”: findings from a qualitative study exploring the information and support needs of family carers at the end of life

PubMed Central

2014-01-01

Background Family carers play an essential role in providing end-of-life care to their relatives but have been found to experience uncertainty and a lack of confidence in fulfilling their caregiving roles, prompting recent calls for educational or information based resources to be developed for carers. Methods We carried out four focus groups with Clinical Nurse Specialists, healthcare assistants, former and current carers at a hospice in the UK, to explore the information and support needs of family carers. Results Our findings support previous research by highlighting a number of care situations where carers experience uncertainty and could seemingly benefit from greater information or instruction. Three main themes were identified which reflected carer experiences and needs in relation to potential information giving or educational interventions. These have been described as the knowledge and competence of carers; the preparedness of carers and low levels of carer identification with, and confidence in their roles as ‘carers’, which influences help seeking behaviours; and in turn how potential supportive interventions might be received by carers. Conclusions Family carers experience multiple needs for information and education, but meeting these needs remains a challenge. Our results suggest three domains which could underpin this type of intervention: developing knowledge and competence; facilitating preparedness; supporting role recognition and confidence building. We recommend an integrated information giving approach which addresses these domains by combining a resource pack for carers with a more explicit acknowledging role for health professionals. Together these could provide key information and also build confidence amongst family carers to ask for further support and advice as needed. PMID:24742046

Extending the trans-contextual model in physical education and leisure-time contexts: examining the role of basic psychological need satisfaction.

PubMed

Barkoukis, Vassilis; Hagger, Martin S; Lambropoulos, George; Tsorbatzoudis, Haralambos

2010-12-01

The trans-contextual model (TCM) is an integrated model of motivation that aims to explain the processes by which agentic support for autonomous motivation in physical education promotes autonomous motivation and physical activity in a leisure-time context. It is proposed that perceived support for autonomous motivation in physical education is related to autonomous motivation in physical education and leisure-time contexts. Furthermore, relations between autonomous motivation and the immediate antecedents of intentions to engage in physical activity behaviour and actual behaviour are hypothesized. The purpose of the present study was to incorporate the constructs of basic psychological need satisfaction in the TCM to provide a more comprehensive explanation of motivation and demonstrate the robustness of the findings of previous tests of the model that have not incorporated these constructs. Students (N=274) from Greek secondary schools. Participants completed self-report measures of perceived autonomy support, autonomous motivation, and basic psychological need satisfaction in physical education. Follow-up measures of these variables were taken in a leisure-time context along with measures of attitudes, subjective norms, perceived behavioural control (PBC), and intentions from the theory of planned behaviour 1 week later. Self-reported physical activity behaviour was measured 4 weeks later. Results supported TCM hypotheses. Basic psychological need satisfaction variables uniquely predicted autonomous motivation in physical education and leisure time as well as the antecedents of intention, namely, attitudes, and PBC. The basic psychological need satisfaction variables also mediated the effects of perceived autonomy support on autonomous motivation in physical education. Findings support the TCM and provide further information of the mechanisms in the model and integrated theories of motivation in physical education and leisure time.

Balance across contexts: importance of balanced need satisfaction across various life domains.

PubMed

Milyavskaya, Marina; Gingras, Isabelle; Mageau, Geneviève A; Koestner, Richard; Gagnon, Hugo; Fang, Jianqun; Boiché, Julie

2009-08-01

Self-determination theory posits that satisfaction of three basic psychological needs-autonomy, competence, and relatedness-are required for psychological well-being, and a recent study showed that the balance in the satisfaction of these three needs independently affects well-being. The present investigation builds on these findings by examining the balance of adolescents' need satisfaction across distinct life contexts. The results of three studies show that adolescents who experience a balance of need satisfaction across important life contexts, including at school, at home, with friends, and in part-time jobs, reported higher well-being and better school adjustment. This finding emerged consistently across four countries and across multiple measures of school adjustment, including teacher reports. Together, these results support previous research that highlights the importance of consistency for psychological functioning.

Being in a "Green" Building Elicits "Greener" Recycling, but Not Necessarily "Better" Recycling.

PubMed

Wu, David W-L; DiGiacomo, Alessandra; Lenkic, Peter J; Wong, Vanessa K; Kingstone, Alan

2016-01-01

Previous observational work revealed that transient populations in a sustainable building disposed of waste more accurately when compared to patrons in a non-sustainable building. The current study uses an experimental design to replicate this observed effect and to investigate whether or not the built environment influences motivational factors to impact behavior. We find support that a building designed and built to communicate an atmosphere of sustainability can influence waste disposal behavior. Participants in the sustainable building used the garbage receptacle significantly less and compensated by tending to select the containers and organics receptacle more, which actually resulted in more errors overall. Our findings suggest that building atmospherics can motivate people to recycle more. However, atmospherics alone do not appear to be sufficient to elicit the desired performance outcome.

Fairy Tales: Attraction and Stereotypes in Same-Gender Relationships.

PubMed

Felmlee, Diane; Orzechowicz, David; Fortes, Carmen

2010-02-01

We examine the process of romantic attraction in same-gender relationships using open and closed-ended questionnaire data from a sample of 120 men and women in Northern California. Agreeableness (e.g., kind, supportive) and Extraversion (e.g., fun, sense of humor) are the two most prominent bases of attraction, followed by Physical Attractiveness (e.g., appearance, sexy). The least important attractors represent traits associated with material success (e.g., financially secure, nice house). We also find evidence of seemingly contradictory attraction processes documented previously in heterosexual romantic relationships, in which individuals become disillusioned with the qualities in a partner that were initially appealing. Our findings challenge common stereotypes of same-gender relationships. The results document broad similarities between same-gender and cross-gender couples in attraction.

Arbitrary amplitude ion-acoustic solitary waves in electronegative plasmas with electrons featuring Tsallis distribution

NASA Astrophysics Data System (ADS)

Ghebache, Siham; Tribeche, Mouloud

2017-10-01

The problem of arbitrary amplitude ion-acoustic solitary waves (IASWs), which accompany electronegative plasmas having positive ions, negative ions, and nonextensive electrons is addressed. The energy integral equation with a new Sagdeev potential is analyzed to examine the existence regions of the IASWs. Different types of electronegative plasmas inspired from the experimental studies of Ichiki et al. (2001) are discussed. Our results show that in such plasmas IASWs, the amplitude and nature of which depend sensitively on the mass and density ratio of the positive and negative ions as well as the q-nonextensive parameter, can exist. Interestingly, one finds that our plasma model supports the coexistence of smooth rarefactive and spiky compressive IASWs. Our results complement and provide new insights on previously published findings on this problem.

Taxonomy and phenotypic relationships of the Anastrepha fraterculus complex in the Mesoamerican and Pacific Neotropical dominions (Diptera, Tephritidae)

PubMed Central

Hernández-Ortiz, Vicente; Canal, Nelson A.; Salas, Juan O. Tigrero; Ruíz-Hurtado, Freddy M.; Dzul-Cauich, José F.

2015-01-01

Abstract Previous morphometric studies based on linear measurements of female structures of the aculeus, mesonotum, and wing revealed the existence of seven morphotypes within the Anastrepha fraterculus cryptic species complex along the Neotropical Region. The current research followed linear and geometric morphometric approaches in 40 population samples of the nominal species Anastrepha fraterculus (Wiedemann) spread throughout the Meso-American and Pacific Neotropical dominions (including Mexico, Central America, Venezuela, Colombia, Ecuador, and Peru). The goals were to explore the phenotypic relationships of the morphotypes in these biogeographical areas; evaluate the reliability of procedures used for delimitation of morphotypes; and describe their current distribution. Findings determined that morphotypes previously recognized via the linear morphometrics were also supported by geometric morphometrics of the wing shape. In addition, we found an eighth morphotype inhabiting the highlands of Ecuador and Peru. Morphotypes are related into three natural phenotypic groups nominated as Mesoamerican-Caribbean lineage, Andean lineage, and Brazilian lineage. The hypothesis that lineages are not directly related to each other is discussed, supported by their large morphological divergence and endemicity in these three well-defined biogeographic areas. In addition, this hypothesis of the non-monophyly of the Anastrepha fraterculus complex is also supported by evidence from other authors based on molecular studies and the strong reproductive isolation between morphs from different lineages. PMID:26798256

Does infectious disease cause global variation in the frequency of intrastate armed conflict and civil war?

PubMed

Letendre, Kenneth; Fincher, Corey L; Thornhill, Randy

2010-08-01

Geographic and cross-national variation in the frequency of intrastate armed conflict and civil war is a subject of great interest. Previous theory on this variation has focused on the influence on human behaviour of climate, resource competition, national wealth, and cultural characteristics. We present the parasite-stress model of intrastate conflict, which unites previous work on the correlates of intrastate conflict by linking frequency of the outbreak of such conflict, including civil war, to the intensity of infectious disease across countries of the world. High intensity of infectious disease leads to the emergence of xenophobic and ethnocentric cultural norms. These cultures suffer greater poverty and deprivation due to the morbidity and mortality caused by disease, and as a result of decreased investment in public health and welfare. Resource competition among xenophobic and ethnocentric groups within a nation leads to increased frequency of civil war. We present support for the parasite-stress model with regression analyses. We find support for a direct effect of infectious disease on intrastate armed conflict, and support for an indirect effect of infectious disease on the incidence of civil war via its negative effect on national wealth. We consider the entanglements of feedback of conflict into further reduced wealth and increased incidence of disease, and discuss implications for international warfare and global patterns of wealth and imperialism.

General practices as emergent research organizations: a qualitative study into organizational development.

PubMed

Macfarlane, Fraser; Shaw, Sara; Greenhalgh, Trisha; Carter, Yvonne H

2005-06-01

An increasing proportion of research in primary care is locally undertaken in designated research practices. Capacity building to support high quality research at these grass roots is urgently needed and is a government priority. There is little previously published research on the process by which GP practices develop as research organizations or on their specific support needs at organizational level. Using in-depth qualitative interviews with 28 key informants in 11 research practices across the UK, we explored their historical accounts of the development of research activity. We analysed the data with reference to contemporary theories of organizational development. Participants identified a number of key events and processes, which allowed us to produce a five-phase model of practice development in relation to research activity (creative energy, concrete planning, transformation/differentiation, consolidation and collaboration). Movement between these phases was not linear or continuous, but showed emergent and adaptive properties in which specific triggers and set-backs were often critical. This developmental model challenges previous categorical taxonomies of research practices. It forms a theory-driven framework for providing appropriate support at the grass roots of primary care research, based on the practice's phase of development and the nature of external triggers and potential setbacks. Our findings have important implications for the strategic development of practice-based research in the UK, and could serve as a model for the wider international community.

Ankle and hip postural strategies defined by joint torques

NASA Technical Reports Server (NTRS)

Runge, C. F.; Shupert, C. L.; Horak, F. B.; Zajac, F. E.; Peterson, B. W. (Principal Investigator)

1999-01-01

Previous studies have identified two discrete strategies for the control of posture in the sagittal plane based on EMG activations, body kinematics, and ground reaction forces. The ankle strategy was characterized by body sway resembling a single-segment-inverted pendulum and was elicited on flat support surfaces. In contrast, the hip strategy was characterized by body sway resembling a double-segment inverted pendulum divided at the hip and was elicited on short or compliant support surfaces. However, biomechanical optimization models have suggested that hip strategy should be observed in response to fast translations on a flat surface also, provided the feet are constrained to remain in contact with the floor and the knee is constrained to remain straight. The purpose of this study was to examine the experimental evidence for hip strategy in postural responses to backward translations of a flat support surface and to determine whether analyses of joint torques would provide evidence for two separate postural strategies. Normal subjects standing on a flat support surface were translated backward with a range of velocities from fast (55 cm/s) to slow (5 cm/s). EMG activations and joint kinematics showed pattern changes consistent with previous experimental descriptions of mixed hip and ankle strategy with increasing platform velocity. Joint torque analyses revealed the addition of a hip flexor torque to the ankle plantarflexor torque during fast translations. This finding indicates the addition of hip strategy to ankle strategy to produce a continuum of postural responses. Hip torque without accompanying ankle torque (pure hip strategy) was not observed. Although postural control strategies have previously been defined by how the body moves, we conclude that joint torques, which indicate how body movements are produced, are useful in defining postural control strategies. These results also illustrate how the biomechanics of the body can transform discrete control patterns into a continuum of postural corrections.

Expressive writing for gay-related stress: psychosocial benefits and mechanisms underlying improvement.

PubMed

Pachankis, John E; Goldfried, Marvin R

2010-02-01

This study tested the effectiveness of an expressive writing intervention for gay men on outcomes related to psychosocial functioning. Seventy-seven gay male college students (mean age = 20.19 years, SD = 1.99) were randomly assigned to write for 20 min a day for 3 consecutive days about either (a) the most stressful or traumatic gay-related event in their lives or (b) a neutral topic. We tested an exposure-based hypothesis of written emotional expression by asking half of the participants who were assigned to write about gay-related stress to read their previous day's narrative before writing, whereas the other half did not. Posttest and 3-month follow-up outcomes were assessed with common measures of overall psychological distress, depression, physical health symptoms, and positive and negative affect. Gay-specific social functioning was assessed with measures of gay-related rejection sensitivity, gay-specific self-esteem, and items regarding openness and comfort with one's sexual orientation. Participants who wrote about gay-related stress, regardless of whether they read their previous day's writing, reported significantly greater openness with their sexual orientation 3 months following writing than participants who wrote about a neutral topic, F(1, 74) = 6.66, p < .05, eta(2) = .08. Additional analyses examined the impact of emotional engagement in the writing, severity of the expressed topic, previous disclosure of writing topic, tendency to conceal, and level of perceived social support on mental health outcomes. The findings suggest that an expressive writing task targeting gay-related stress can improve gay men's psychosocial functioning, especially openness with sexual orientation. The intervention seems to be particularly beneficial for those men who write about more severe topics and for those with lower levels of social support. The findings suggest future tests of expressive writing tasks for different aspects of stigma-related stress.

Personal exposure to fine particulate air pollution while commuting: An examination of six transport modes on an urban arterial roadway.

PubMed

Chaney, Robert A; Sloan, Chantel D; Cooper, Victoria C; Robinson, Daniel R; Hendrickson, Nathan R; McCord, Tyler A; Johnston, James D

2017-01-01

Traffic-related air pollution in urban areas contributes significantly to commuters' daily PM2.5 exposures, but varies widely depending on mode of commuting. To date, studies show conflicting results for PM2.5 exposures based on mode of commuting, and few studies compare multiple modes of transportation simultaneously along a common route, making inter-modal comparisons difficult. In this study, we examined breathing zone PM2.5 exposures for six different modes of commuting (bicycle, walking, driving with windows open and closed, bus, and light-rail train) simultaneously on a single 2.7 km (1.68 mile) arterial urban route in Salt Lake City, Utah (USA) during peak "rush hour" times. Using previously published minute ventilation rates, we estimated the inhaled dose and exposure rate for each mode of commuting. Mean PM2.5 concentrations ranged from 5.20 μg/m3 for driving with windows closed to 15.21 μg/m3 for driving with windows open. The estimated inhaled doses over the 2.7 km route were 6.83 μg for walking, 2.78 μg for cycling, 1.28 μg for light-rail train, 1.24 μg for driving with windows open, 1.23 μg for bus, and 0.32 μg for driving with windows closed. Similarly, the exposure rates were highest for cycling (18.0 μg/hr) and walking (16.8 μg/hr), and lowest for driving with windows closed (3.7 μg/hr). Our findings support previous studies showing that active commuters receive a greater PM2.5 dose and have higher rates of exposure than commuters using automobiles or public transportation. Our findings also support previous studies showing that driving with windows closed is protective against traffic-related PM2.5 exposure.

Personal exposure to fine particulate air pollution while commuting: An examination of six transport modes on an urban arterial roadway

PubMed Central

Sloan, Chantel D.; Cooper, Victoria C.; Robinson, Daniel R.; Hendrickson, Nathan R.; McCord, Tyler A.; Johnston, James D.

2017-01-01

Traffic-related air pollution in urban areas contributes significantly to commuters’ daily PM2.5 exposures, but varies widely depending on mode of commuting. To date, studies show conflicting results for PM2.5 exposures based on mode of commuting, and few studies compare multiple modes of transportation simultaneously along a common route, making inter-modal comparisons difficult. In this study, we examined breathing zone PM2.5 exposures for six different modes of commuting (bicycle, walking, driving with windows open and closed, bus, and light-rail train) simultaneously on a single 2.7 km (1.68 mile) arterial urban route in Salt Lake City, Utah (USA) during peak “rush hour” times. Using previously published minute ventilation rates, we estimated the inhaled dose and exposure rate for each mode of commuting. Mean PM2.5 concentrations ranged from 5.20 μg/m3 for driving with windows closed to 15.21 μg/m3 for driving with windows open. The estimated inhaled doses over the 2.7 km route were 6.83 μg for walking, 2.78 μg for cycling, 1.28 μg for light-rail train, 1.24 μg for driving with windows open, 1.23 μg for bus, and 0.32 μg for driving with windows closed. Similarly, the exposure rates were highest for cycling (18.0 μg/hr) and walking (16.8 μg/hr), and lowest for driving with windows closed (3.7 μg/hr). Our findings support previous studies showing that active commuters receive a greater PM2.5 dose and have higher rates of exposure than commuters using automobiles or public transportation. Our findings also support previous studies showing that driving with windows closed is protective against traffic-related PM2.5 exposure. PMID:29121096

An Extended Structure–Activity Relationship of Nondioxin-Like PCBs Evaluates and Supports Modeling Predictions and Identifies Picomolar Potency of PCB 202 Towards Ryanodine Receptors

PubMed Central

Feng, Wei; Zheng, Jing; Dong, Yao; Li, Xueshu; Lehmler, Hans-Joachim; Pessah, Isaac N.

2017-01-01

Nondioxin-like polychlorinated biphenyls (NDL PCBs) activate ryanodine-sensitive Ca2+ channels (RyRs) and this activation has been associated with neurotoxicity in exposed animals. RyR-active congeners follow a distinct structure–activity relationship and a quantitative structure–activity relationship (QSAR) predicts that a large number of PCBs likely activate the receptor, which requires validation. Additionally, previous structural based conclusions have been established using receptor ligand binding assays but the impact of varying PCB structures on ion channel gating behavior is not understood. We used [3H]Ryanodine ([3H]Ry) binding to assess the RyR-activity of 14 previously untested PCB congeners evaluating the predictability of the QSAR. Congeners determined to display widely varying potency were then assayed with single channel voltage clamp analysis to assess direct influences on channel gating kinetics. The RyR-activity of individual PCBs assessed in in vitro assays followed the general pattern predicted by the QSAR but binding and lipid bilayer experiments demonstrated higher potency than predicted. Of the 49 congeners tested to date, tetra-ortho PCB 202 was found to be the most potent RyR-active congener increasing channel open probability at 200 pM. Shifting meta-substitutions to the para-position resulted in a > 100-fold reduction in potency as seen with PCB 197. Non-ortho PCB 11 was found to lack activity at the receptor supporting a minimum mono-ortho substitution for PCB RyR activity. These findings expand and support previous SAR assessments; where out of the 49 congeners tested to date 42 activate the receptor demonstrating that the RyR is a sensitive and common target of PCBs. PMID:27655348

Abnormal eating attitudes and behaviours and perceived parental control: a study of white British and British-Asian school girls.

PubMed

Furnham, A; Adam-Saib, S

2001-09-01

Previous studies have found significantly higher scores on the Eating Attitudes Test (EAT-26) which measures eating disorders among second-generation British-Asian schoolgirls in comparison to their White counterparts. Further, high EAT-26 scores (an indication of unhealthy eating attitudes and behaviours) are positively associated with parental overprotection scores on the Parental Bonding Instrument (PBI). This study aimed to replicate and extend previous findings, comparing British-Asian schoolgirls to White schoolgirls and consider 'intra-Asian' differences on the same measures, including factor scores. Participants completed three questionnaires: EAT-26, PBI and BSS (Body Satisfaction Scale). There were 168 participants: 46 White, 40 Indian, 44 Pakistani and 38 Bengali. Previous findings were supported; the Asian scores were significantly higher than the White scores on the EAT-26 and PBI, but not the BSS. The Bengali sample had significantly higher EAT-26 total and 'oral control' scores than the other groups. There were no intra-Asian differences for the overprotection scores. PBI scores were not associated with EAT-26 scores. The BSS score was the only significant predictor of EAT scores, when entered into a regression along with PBI scores and the body mass index. Results demonstrated sociocultural factors in the development of eating disorders. The results suggest that there are important psychological differences between second-generation migrants from different countries on the Indian subcontinent. In line with previous studies, significant differences were found between the four ethnic groups, parenting styles, but these did not relate to actual eating disorders.

VO2 kinetics of constant-load exercise following bed-rest-induced deconditioning

NASA Technical Reports Server (NTRS)

Convertino, V. A.; Goldwater, D. J.; Sandler, H.

1984-01-01

Previous studies have shown that the oxygen uptake kinetics during exercise and recovery may be changed by alterations in work intensity, prior exercise, muscle group involvement, ambient conditions, posture, disease state, and level of physical conditioning. However, the effects of detraining on oxygen uptake kinetics have not been determined. The present investigation has the objective to determine the effects of deconditioning following seven days of continuous head-down bed rest on changes in steady-state oxygen uptake, O2 deficit, and recovery oxygen uptake during the performance of constant-load exercise. The obtained results may provide support for previous proposals that submaximal oxygen uptake was significantly reduced following bed rest. The major finding was that bed-rest deconditioning resulted in a reduction of total O2 transport/utilization capacity during the transient phase of upright but not supine exercise.

Managing perceived operational risk factors for effective supply-chain management

NASA Astrophysics Data System (ADS)

Sylla, Cheickna

2014-12-01

This research is part of a large scale comprehensive mathematical and empirical modeling investigation projects aimed at developing a better understanding of supply-chain risk management by offering a comprehensive framework including theoretical elements and empirical evidence based on managers' perception of improved organizational level of preparedness to safeguard against the threats of disruptions, delays and stoppage in the supply chain. More specifically, this paper reports the empirical investigation conducted using 92 companies in several eastern USA regions involved in international trades with global supply chains. Among the 56 general hypotheses investigated, the results support that managers strive to balance their control and decision impacts to mold their responses to risk factors with knowledge of the extent of cost consequences as stated in previous research. However, the results also propose new findings which significantly vary from previous research reports.

Cigarette smoking and suicide attempts in psychiatric outpatients in Hungary.

PubMed

Rihmer, Zoltán; Döme, Péter; Gonda, Xénia; Kiss, Huba G; Kovács, Dénes; Seregi, Krisztina; Teleki, Zsófia

2007-06-01

Epidemiological and clinical studies have found a significant association between smoking and suicidal behaviour. 334 outpatients with DSM-IV diagnosis of unipolar major depression, bipolar (I+II) disorder, schizophrenia, schizoaffective disorder and pure panic disorder were interviewed regarding to their smoking habits and previous suicide attempts. With the exception of panic disorder patients, the rate of prior suicide attempt(s) was much higher among current and lifetime smokers than among never smokers in all diagnostic groups, but the difference was statistically significant only for lifetime smoker unipolar depressives and for current and lifetime smoker schizophrenics. Age, social class and alcohol/caffeine consumption was not controlled and dependent vs nondependent smokers were not distinguished. The findings support previous results on the strong relationship between smoking and suicidal behaviour in psychiatric (particularly major depressive and schizophrenic) patients.

Effects of Concentration of Nanoscale Tin-Doped Indium Oxide on Electrical Breakdown of High-Resistance Liquid Crystal

NASA Astrophysics Data System (ADS)

Liang, Bau-Jy; Liu, Don-Gey; Chang, Chih-Yuan; Shie, Wun-Yi

2011-05-01

According to our previous study, a high concentration of nanoscale tin-doped indium oxide (ITO) may be beneficial for protecting liquid crystal (LC) against attacks by electrostatic discharge (ESD). In this study, the influence of high-voltage stresses in an ESD test was investigated for cells doped with different concentrations of ITO. It was found that nano-ITO with a concentration of 0.4% in weight ratio deteriorated the physical properties of LC of transparency transition and charge retention. However, our experiment showed that the capability of ESD protection for the doped LC was still improved at the ITO concentration of 0.4 wt %. This finding supports the proposed model in our previous report. The role of ITO in the LC is not always beneficial, as discussed in this paper.

Phylogenetic relationships of the dwarf boas and a comparison of Bayesian and bootstrap measures of phylogenetic support.

PubMed

Wilcox, Thomas P; Zwickl, Derrick J; Heath, Tracy A; Hillis, David M

2002-11-01

Four New World genera of dwarf boas (Exiliboa, Trachyboa, Tropidophis, and Ungaliophis) have been placed by many systematists in a single group (traditionally called Tropidophiidae). However, the monophyly of this group has been questioned in several studies. Moreover, the overall relationships among basal snake lineages, including the placement of the dwarf boas, are poorly understood. We obtained mtDNA sequence data for 12S, 16S, and intervening tRNA-val genes from 23 species of snakes representing most major snake lineages, including all four genera of New World dwarf boas. We then examined the phylogenetic position of these species by estimating the phylogeny of the basal snakes. Our phylogenetic analysis suggests that New World dwarf boas are not monophyletic. Instead, we find Exiliboa and Ungaliophis to be most closely related to sand boas (Erycinae), boas (Boinae), and advanced snakes (Caenophidea), whereas Tropidophis and Trachyboa form an independent clade that separated relatively early in snake radiation. Our estimate of snake phylogeny differs significantly in other ways from some previous estimates of snake phylogeny. For instance, pythons do not cluster with boas and sand boas, but instead show a strong relationship with Loxocemus and Xenopeltis. Additionally, uropeltids cluster strongly with Cylindrophis, and together are embedded in what has previously been considered the macrostomatan radiation. These relationships are supported by both bootstrapping (parametric and nonparametric approaches) and Bayesian analysis, although Bayesian support values are consistently higher than those obtained from nonparametric bootstrapping. Simulations show that Bayesian support values represent much better estimates of phylogenetic accuracy than do nonparametric bootstrap support values, at least under the conditions of our study. Copyright 2002 Elsevier Science (USA)

Improving gambling survey research using dual-frame sampling of landline and mobile phone numbers.

PubMed

Jackson, Alun C; Pennay, Darren; Dowling, Nicki A; Coles-Janess, Bernadette; Christensen, Darren R

2014-06-01

Gambling prevalence studies are typically conducted within a single (landline) telephone sampling frame. This practice continues, despite emerging evidence that significant differences exist between landline and mobile (cell) phone only households. This study utilised a dual-frame (landline and mobile) telephone sampling methodology to cast light on the extent of differences across groups of respondents in respect to demographic, health, and gambling characteristics. A total of 2,014 participants from across Australian states and territories ranging in age from 18 to 96 years participated. Interviews were conducted using computer assisted telephone interviewing technology where 1,012 respondents from the landline sampling frame and 1,002 from the mobile phone sampling frame completed a questionnaire about gambling and other health behaviours. Responses across the landline sampling frame, the mobile phone sampling frame, and the subset of the mobile phone sampling frame that possessed a mobile phone only (MPO) were contrasted. The findings revealed that although respondents in the landline sample (62.7 %) did not significantly differ from respondents in the mobile phone sample (59.2 %) in gambling participation in the previous 12 months, they were significantly more likely to have gambled in the previous 12 months than the MPO sample (56.4 %). There were no significant differences in internet gambling participation over the previous 12 months in the landline sample (4.7 %), mobile phone sample (4.7 %) and the MPO sample (5.0 %). However, endorsement of lifetime problem gambling on the NODS-CLiP was significantly higher within the mobile sample (10.7 %) and the MPO sample (14.8 %) than the landline sample (6.6 %). Our research supports previous findings that reliance on a traditional landline telephone sampling approach effectively excludes distinct subgroups of the population from being represented in research findings. Consequently, we suggest that research best practice necessitates the use of a dual-frame sampling methodology. Despite inherent logistical and cost issues, this approach needs to become the norm in gambling survey research.

Optimizing multiple-choice tests as tools for learning.

PubMed

Little, Jeri L; Bjork, Elizabeth Ligon

2015-01-01

Answering multiple-choice questions with competitive alternatives can enhance performance on a later test, not only on questions about the information previously tested, but also on questions about related information not previously tested-in particular, on questions about information pertaining to the previously incorrect alternatives. In the present research, we assessed a possible explanation for this pattern: When multiple-choice questions contain competitive incorrect alternatives, test-takers are led to retrieve previously studied information pertaining to all of the alternatives in order to discriminate among them and select an answer, with such processing strengthening later access to information associated with both the correct and incorrect alternatives. Supporting this hypothesis, we found enhanced performance on a later cued-recall test for previously nontested questions when their answers had previously appeared as competitive incorrect alternatives in the initial multiple-choice test, but not when they had previously appeared as noncompetitive alternatives. Importantly, however, competitive alternatives were not more likely than noncompetitive alternatives to be intruded as incorrect responses, indicating that a general increased accessibility for previously presented incorrect alternatives could not be the explanation for these results. The present findings, replicated across two experiments (one in which corrective feedback was provided during the initial multiple-choice testing, and one in which it was not), thus strongly suggest that competitive multiple-choice questions can trigger beneficial retrieval processes for both tested and related information, and the results have implications for the effective use of multiple-choice tests as tools for learning.

Hispanic Acculturation and Gender Differences in Support and Self-Efficacy for Managing Diabetes.

PubMed

Mansyur, Carol L; Rustveld, Luis O; Nash, Susan G; Jibaja-Weiss, Maria L

2016-06-01

The purpose of this study was to determine whether perceived support, social norms, and their association with self-efficacy varied by gender and language-based acculturation in Hispanic men and women with uncontrolled type 2 diabetes mellitus (T2DM). A cross-sectional, secondary analysis of baseline survey data from a randomized control trial. Participants were 248 Hispanic patients from 4 community health centers who participated in a culturally targeted intervention for diabetes management. Quantitative statistical methods were used, including chi-square analyses, one-way ANOVA, and multiple regression. Gender and language both moderated the relationship between social factors and self-efficacy. Regardless of language, better perceived support was associated with improved self-efficacy in women but not men. Dietary norms were associated with self-efficacy in English-speaking men and women, while physical activity norms were associated with self-efficacy for Spanish-speaking women only. This study builds on previous research by exploring the extent to which the social context of diabetes self-management may vary in its effects depending on gender and acculturation. The findings revealed potentially important differences based on both gender and language, suggesting that interventions must be designed with these differences in mind. Diabetes-specific support from family members, especially spouses, may be especially important for Hispanic women. For both men and women, it may be effective to find creative ways of involving the family in creating healthier social norms and expectations. © 2016 The Author(s).

The Family Socialization Interview—Revised (FSI-R): a Comprehensive Assessment of Parental Disciplinary Behaviors

PubMed Central

O’Dor, Sarah L.; Grasso, Damion J.; Forbes, Danielle; Bates, John E.; McCarthy, Kimberly J.; Wakschlag, Lauren S.

2017-01-01

Elucidating the complex mechanisms by which harsh parenting increases risk of child psychopathology is key to targeted prevention. This requires nuanced methods that capture the varied perceptions and experiences of diverse families. The Family Socialization Interview—Revised (FSI-R), adapted from an interview developed by Dodge et al. (Child Development, 65,649–665,1994), is a comprehensive, semi-structured interview for characterizing methods of parental discipline used with young children. The FSI-R coding system systematically rates parenting style, usual discipline techniques, and most intense physical and psychological discipline based on rater judgment across two eras: (1) birth to the previous year, and (2) the previous year to present. The current study examined the psychometric properties of the FSI-R in a diverse, high-risk community sample of 386 mothers and their children, ages 3 to 6 years. Interrater reliability was good to excellent for codes capturing physically and psychologically harsh parenting, and restrictive/punitive parenting styles. Findings supported the FSI-R’s convergent and incremental validity. Importantly, the FSI-R demonstrated incremental utility, explaining unique variance in children’s externalizing and internalizing symptoms beyond that explained by traditional surveys and observed parenting. The FSI-R appeared particularly promising for capturing risk associated with young children’s depressive symptoms, as these were generally not significantly associated with other measures of harsh parenting. Overall, findings support the added value of the FSI-R within a multi-method assessment of disciplinary practices across early child development. Future implications for prevention are discussed. PMID:27718104

The factor structure of the Alcohol Use Disorders Identification Test (AUDIT).

PubMed

Doyle, Suzanne R; Donovan, Dennis M; Kivlahan, Daniel R

2007-05-01

Past research assessing the factor structure of the Alcohol Use Disorders Identification Test (AUDIT) with various exploratory and confirmatory factor analytic techniques has identified one-, two-, and three-factor solutions. Because different factor analytic procedures may result in dissimilar findings, we examined the factor structure of the AUDIT using the same factor analytic technique on two new large clinical samples and on archival data from six samples studied in previous reports. Responses to the AUDIT were obtained from participants who met Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV), criteria for alcohol dependence in two large randomized clinical trials: the COMBINE (Combining Medications and Behavioral Interventions) Study (N = 1,337; 69% men) and Project MATCH (Matching Alcoholism Treatments to Client Heterogeneity; N = 1,711; 76% men). Supplementary analyses involved six correlation matrices of AUDIT data obtained from five previously published articles. Confirmatory factor analyses based on one-, two-, and three-factor models were conducted on the eight correlation matrices to assess the factor structure of the AUDIT. Across samples, analyses supported a correlated, two-factor solution representing alcohol consumption and alcohol-related consequences. The three-factor solution fit the data equally well, but two factors (alcohol dependence and harmful alcohol use) were highly correlated. The one-factor solution did not provide a good fit to the data. These findings support a two-factor solution for the AUDIT (alcohol consumption and alcohol-related consequences). The results contradict the original three-factor design of the AUDIT and the prevalent use of the AUDIT as a one-factor screening instrument with a single cutoff score.

Evolutionary History of Saber-Toothed Cats Based on Ancient Mitogenomics.

PubMed

Paijmans, Johanna L A; Barnett, Ross; Gilbert, M Thomas P; Zepeda-Mendoza, M Lisandra; Reumer, Jelle W F; de Vos, John; Zazula, Grant; Nagel, Doris; Baryshnikov, Gennady F; Leonard, Jennifer A; Rohland, Nadin; Westbury, Michael V; Barlow, Axel; Hofreiter, Michael

2017-11-06

Saber-toothed cats (Machairodontinae) are among the most widely recognized representatives of the now largely extinct Pleistocene megafauna. However, many aspects of their ecology, evolution, and extinction remain uncertain. Although ancient-DNA studies have led to huge advances in our knowledge of these aspects of many other megafauna species (e.g., mammoths and cave bears), relatively few ancient-DNA studies have focused on saber-toothed cats [1-3], and they have been restricted to short fragments of mitochondrial DNA. Here we investigate the evolutionary history of two lineages of saber-toothed cats (Smilodon and Homotherium) in relation to living carnivores and find that the Machairodontinae form a well-supported clade that is distinct from all living felids. We present partial mitochondrial genomes from one S. populator sample and three Homotherium sp. samples, including the only Late Pleistocene Homotherium sample from Eurasia [4]. We confirm the identification of the unique Late Pleistocene European fossil through ancient-DNA analyses, thus strengthening the evidence that Homotherium occurred in Europe over 200,000 years later than previously believed. This in turn forces a re-evaluation of its demography and extinction dynamics. Within the Machairodontinae, we find a deep divergence between Smilodon and Homotherium (∼18 million years) but limited diversity between the American and European Homotherium specimens. The genetic data support the hypothesis that all Late Pleistocene (or post-Villafrancian) Homotherium should be considered a single species, H. latidens, which was previously proposed based on morphological data [5, 6]. Copyright © 2017 Elsevier Ltd. All rights reserved.

Calculation and word problem-solving skills in primary grades - Impact of cognitive abilities and longitudinal interrelations with task-persistent behaviour.

PubMed

Jõgi, Anna-Liisa; Kikas, Eve

2016-06-01

Primary school math skills form a basis for academic success down the road. Different math skills have different antecedents and there is a reason to believe that more complex math tasks require better self-regulation. The study aimed to investigate longitudinal interrelations of calculation and problem-solving skills, and task-persistent behaviour in Grade 1 and Grade 3, and the effect of non-verbal intelligence, linguistic abilities, and executive functioning on math skills and task persistence. Participants were 864 students (52.3% boys) from 33 different schools in Estonia. Students were tested twice - at the end of Grade1 and at the end of Grade 3. Calculation and problem-solving skills, and teacher-rated task-persistent behaviour were measured at both time points. Non-verbal intelligence, linguistic abilities, and executive functioning were measured in Grade 1. Cross-lagged structural equation modelling indicated that calculation skills depend on previous math skills and linguistic abilities, while problem-solving skills require also non-verbal intelligence, executive functioning, and task persistence. Task-persistent behaviour in Grade 3 was predicted by previous problem-solving skills, linguistic abilities, and executive functioning. Gender and mother's educational level were added as covariates. The findings indicate that math skills and self-regulation are strongly related in primary grades and that solving complex tasks requires executive functioning and task persistence from children. Findings support the idea that instructional practices might benefit from supporting self-regulation in order to gain domain-specific, complex skill achievement. © 2015 The British Psychological Society.

Syndromes of Self-Reported Psychopathology for Ages 18-59 in 29 Societies.

PubMed

Ivanova, Masha Y; Achenbach, Thomas M; Rescorla, Leslie A; Tumer, Lori V; Ahmeti-Pronaj, Adelina; Au, Alma; Maese, Carmen Avila; Bellina, Monica; Caldas, J Carlos; Chen, Yi-Chuen; Csemy, Ladislav; da Rocha, Marina M; Decoster, Jeroen; Dobrean, Anca; Ezpeleta, Lourdes; Fontaine, Johnny R J; Funabiki, Yasuko; Guðmundsson, Halldór S; Harder, Valerie S; de la Cabada, Marie Leiner; Leung, Patrick; Liu, Jianghong; Mahr, Safia; Malykh, Sergey; Maras, Jelena Srdanovic; Markovic, Jasminka; Ndetei, David M; Oh, Kyung Ja; Petot, Jean-Michel; Riad, Geylan; Sakarya, Direnc; Samaniego, Virginia C; Sebre, Sandra; Shahini, Mimoza; Silvares, Edwiges; Simulioniene, Roma; Sokoli, Elvisa; Talcott, Joel B; Vazquez, Natalia; Zasepa, Ewa

2015-06-01

This study tested the multi-society generalizability of an eight-syndrome assessment model derived from factor analyses of American adults' self-ratings of 120 behavioral, emotional, and social problems. The Adult Self-Report (ASR; Achenbach and Rescorla 2003) was completed by 17,152 18-59-year-olds in 29 societies. Confirmatory factor analyses tested the fit of self-ratings in each sample to the eight-syndrome model. The primary model fit index (Root Mean Square Error of Approximation) showed good model fit for all samples, while secondary indices showed acceptable to good fit. Only 5 (0.06%) of the 8,598 estimated parameters were outside the admissible parameter space. Confidence intervals indicated that sampling fluctuations could account for the deviant parameters. Results thus supported the tested model in societies differing widely in social, political, and economic systems, languages, ethnicities, religions, and geographical regions. Although other items, societies, and analytic methods might yield different results, the findings indicate that adults in very diverse societies were willing and able to rate themselves on the same standardized set of 120 problem items. Moreover, their self-ratings fit an eight-syndrome model previously derived from self-ratings by American adults. The support for the statistically derived syndrome model is consistent with previous findings for parent, teacher, and self-ratings of 1½-18-year-olds in many societies. The ASR and its parallel collateral-report instrument, the Adult Behavior Checklist (ABCL), may offer mental health professionals practical tools for the multi-informant assessment of clinical constructs of adult psychopathology that appear to be meaningful across diverse societies.

Reducing self-objectification: are dissonance-based methods a possible approach?

PubMed Central

2013-01-01

Background Previous research has documented that self-objectification is associated with numerous negative outcomes including body shame, eating disorder (ED) pathology, and negative affect. This exploratory open study investigated whether or not an evidence-based body image improvement program that targets thin-ideal internalization in university women also reduces self-objectification. A second aim of the study was to determine if previous findings showing that body shame mediated the relationship between self-objectification and eating disorder pathology at a single time point (consistent with self-objectification theory) but did not mediate longitudinally (inconsistent with self-objectification theory) would be replicated in a new sample under novel conditions. Methods Ninety-six university women completed a peer-led dissonance-based intervention, along with assessment measures at pre-, post-intervention, 8-week and 8-month follow-up. To address the open trial nature of this study, a planned manipulation check was included to make sure that peer-led dissonance decreased thin-ideal internalization, body dissatisfaction, eating disorder pathology, and negative affect with effect sizes being similar to past randomized controlled trials. We hypothesized that all three subscales of the Objectified Body Consciousness Scale (i.e., self-surveillance, body shame, and appearance control beliefs) would be reduced. In addition, we hypothesized that body shame would mediate the relationship between self-objectification (i.e., self-surveillance) and eating disorder pathology at a both at a single time point and longitudinally. Results The planned manipulation check supported the interpretation that peer-led dissonance in this study largely yielded comparable changes to past controlled trials. In terms of changes in dependent variables, results supported all hypotheses with the exception of body shame, which remained unchanged. With regards to the mediation analyses, our first (cross-sectional) hypothesis but not our second (longitudinal) was supported. Conclusions Findings provide preliminary support for the use of dissonance interventions in reducing self-surveillance and body control beliefs. Results for body shame and the mediation analyses suggest that greater scrutiny of the body shame construct is warranted. PMID:24999392

Does True Neurocognitive Dysfunction Contribute to Minnesota Multiphasic Personality Inventory-2nd Edition-Restructured Form Cognitive Validity Scale Scores?

PubMed

Martin, Phillip K; Schroeder, Ryan W; Heinrichs, Robin J; Baade, Lyle E

2015-08-01

Previous research has demonstrated RBS and FBS-r to identify non-credible reporters of cognitive symptoms, but the extent that these scales might be influenced by true neurocognitive dysfunction has not been previously studied. The present study examined the relationship between these cognitive validity scales and neurocognitive performance across seven domains of cognitive functioning, both before and after controlling for PVT status in 120 individuals referred for neuropsychological evaluations. Variance in RBS, but not FBS-r, was significantly accounted for by neurocognitive test performance across most cognitive domains. After controlling for PVT status, however, relationships between neurocognitive test performance and validity scales were no longer significant for RBS, and remained non-significant for FBS-r. Additionally, PVT failure accounted for a significant proportion of the variance in both RBS and FBS-r. Results support both the convergent and discriminant validity of RBS and FBS-r. As neither scale was impacted by true neurocognitive dysfunction, these findings provide further support for the use of RBS and FBS-r in neuropsychological evaluations. © The Author 2015. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

ELECTROKINETIC PHENOMENA. II : THE FACTOR OF PROPORTIONALITY FOR CATAPHORETIC AND ELECTROENDOSMOTIC MOBILITIES.

PubMed

Abramson, H A

1930-07-20

Two theories which predict different values for the ratio of V(E), the electroendosmotic velocity of a liquid past a surface, to V(p), the electric mobility of a particle of the same surface through the same liquid are discussed. The theory demanding that See PDF for Equation was supported by certain data of van der Grinten for a glass surface. Re-calculation of van der Grinten's data reveals that the ratio varies between 2.1 and 2.8. These results are in accord with previous data of Abramson. It is pointed out that glass is unsuitable for the investigation. The ratio See PDF for Equation is here determined for a flat surface and particles when both are covered by the same proteins. Under these conditions See PDF for Equation The theory is similarly tested for a round surface using a micro-cataphoresis cell. It is shown that See PDF for Equation for a round surface is approximately 1.00. These findings are confirmatory of previous data supporting the view that cataphoretic mobility is independent of the size and shape of the particles when all particles compared have similar surface constitutions.

Clinical supervision, emotional exhaustion, and turnover intention: a study of substance abuse treatment counselors in the Clinical Trials Network of the National Institute on Drug Abuse.

PubMed

Knudsen, Hannah K; Ducharme, Lori J; Roman, Paul M

2008-12-01

An intriguing hypothesis is that clinical supervision may protect against counselor turnover. This idea has been mentioned in recent discussions of the substance abuse treatment workforce. To test this hypothesis, we extend our previous research on emotional exhaustion and turnover intention among counselors by estimating the associations between clinical supervision and these variables in a large sample (N = 823). An exploratory analysis reveals that clinical supervision was negatively associated with emotional exhaustion and turnover intention. Given our previous findings that emotional exhaustion and turnover intention were associated with job autonomy, procedural justice, and distributive justice, we estimate a structural equation model to examine whether these variables mediated clinical supervision's associations with emotional exhaustion and turnover intention. These data support the fully mediated model. We found that the perceived quality of clinical supervision is strongly associated with counselors' perceptions of job autonomy, procedural justice, and distributive justice, which are, in turn, associated with emotional exhaustion and turnover intention. These data offer support for the protective role of clinical supervision in substance abuse treatment counselors' turnover and occupational well-being.

Compartmentalization of the yeast meiotic nucleus revealed by analysis of ectopic recombination.

PubMed

Schlecht, Hélène B; Lichten, Michael; Goldman, Alastair S H

2004-11-01

As yeast cells enter meiosis, chromosomes move from a centromere-clustered (Rabl) to a telomere-clustered (bouquet) configuration and then to states of progressive homolog pairing where telomeres are more dispersed. It is uncertain at which stage of this process sequences commit to recombine with each other. Previous analyses using recombination between dispersed homologous sequences (ectopic recombination) support the view that, on average, homologs are aligned end to end by the time of commitment to recombination. We have undertaken further analyses incorporating new inserts, chromosome rearrangements, an alternate mode of recombination initiation, and mutants that disrupt nuclear structure or telomere metabolism. Our findings support previous conclusions and reveal that distance from the nearest telomere is an important parameter influencing recombination between dispersed sequences. In general, the farther dispersed sequences are from their nearest telomere, the less likely they are to engage in ectopic recombination. Neither the mode of initiating recombination nor the formation of the bouquet appears to affect this relationship. We suggest that aspects of telomere localization and behavior influence the organization and mobility of chromosomes along their entire length, during a critical period of meiosis I prophase that encompasses the homology search.

Validation of a predictive model that identifies patients at high risk of developing febrile neutropaenia following chemotherapy for breast cancer.

PubMed

Jenkins, P; Scaife, J; Freeman, S

2012-07-01

We have previously developed a predictive model that identifies patients at increased risk of febrile neutropaenia (FN) following chemotherapy, based on pretreatment haematological indices. This study was designed to validate our earlier findings in a separate cohort of patients undergoing more myelosuppressive chemotherapy supported by growth factors. We conducted a retrospective analysis of 263 patients who had been treated with adjuvant docetaxel, adriamycin and cyclophosphamide (TAC) chemotherapy for breast cancer. All patients received prophylactic pegfilgrastim and the majority also received prophylactic antibiotics. Thirty-one patients (12%) developed FN. Using our previous model, patients in the highest risk group (pretreatment absolute neutrophil count≤3.1 10(9)/l and absolute lymphocyte count≤1.5 10(9)/l) comprised 8% of the total population and had a 33% risk of developing FN. Compared with the rest of the cohort, this group had a 3.4-fold increased risk of developing FN (P=0.001) and a 5.2-fold increased risk of cycle 1 FN (P<0.001). A simple model based on pretreatment differential white blood cell count can be applied to pegfilgrastim-supported patients to identify those who are at higher risk of FN.

Evaluation of features to support safety and quality in general practice clinical software

PubMed Central

2011-01-01

Background Electronic prescribing is now the norm in many countries. We wished to find out if clinical software systems used by general practitioners in Australia include features (functional capabilities and other characteristics) that facilitate improved patient safety and care, with a focus on quality use of medicines. Methods Seven clinical software systems used in general practice were evaluated. Fifty software features that were previously rated as likely to have a high impact on safety and/or quality of care in general practice were tested and are reported here. Results The range of results for the implementation of 50 features across the 7 clinical software systems was as follows: 17-31 features (34-62%) were fully implemented, 9-13 (18-26%) partially implemented, and 9-20 (18-40%) not implemented. Key findings included: Access to evidence based drug and therapeutic information was limited. Decision support for prescribing was available but varied markedly between systems. During prescribing there was potential for medicine mis-selection in some systems, and linking a medicine with its indication was optional. The definition of 'current medicines' versus 'past medicines' was not always clear. There were limited resources for patients, and some medicines lists for patients were suboptimal. Results were provided to the software vendors, who were keen to improve their systems. Conclusions The clinical systems tested lack some of the features expected to support patient safety and quality of care. Standards and certification for clinical software would ensure that safety features are present and that there is a minimum level of clinical functionality that clinicians could expect to find in any system.

"Don't crack under pressure!"--Do leisure time physical activity and self-esteem moderate the relationship between school-based stress and psychosomatic complaints?

PubMed

Gerber, Markus; Pühse, Uwe

2008-10-01

Stressful experiences occupy a central role in most etiological models of developmental psychopathology. Stress alone, however, insufficiently explains negative health outcomes. This raises the question why some children and adolescents are more vulnerable to the development of psychopathological symptoms than others. The primary purpose of this research was to demonstrate whether leisure time physical activity and self-esteem protect against stress-induced health problems. The findings are based on a cross-sectional study of 407 Swiss boys and girls (M=14.01 years). All variables are self-reported. Analyses of covariance were applied to test for main and moderator effects. The findings suggest that school-based stress and psychosomatic complaints are important issues during adolescence. The results show that a higher level of psychosomatic complaints accompanies stress. Surprisingly, psychosomatic complaints and physical activity were unrelated. Likewise, no association was found between physical activity and stress. In contrast, students with high self-esteem reported significantly less complaints and a lower extent of perceived stress. Finally, the results do not support the stress-moderation hypothesis. Neither physical activity nor self-esteem buffered against the detrimental effects of school-based stress on psychosomatic health. The findings lend support to previous research with German-speaking samples but are in marked contrast to Anglo-Saxon studies, which generally support the role of physical activity as a moderator of the health-illness relationship. In this investigation, developmental features and methodological limitations may have accounted for the insignificant results.

Neurocognitive Enhancement or Impairment? A Systematic Meta-Analysis of Prescription Stimulant Effects on Processing Speed, Decision-Making, Planning, and Cognitive Perseveration

PubMed Central

Marraccini, Marisa E.; Weyandt, Lisa L.; Rossi, Joseph S.; Gudmundsdottir, Bergljot Gyda

2016-01-01

Increasing numbers of adults, particularly college students, are misusing prescription stimulants primarily for cognitive/academic enhancement, so it is critical to explore whether empirical findings support neurocognitive benefits of prescription stimulants. Previous meta-analytic studies have supported small benefits from prescription stimulants for the cognitive domains of inhibitory control and memory; however, no meta-analytic studies have examined the effects on processing speed or the potential impairment on other domains of cognition, including planning, decision-making, and cognitive perseveration. Therefore, the present study conducted a meta-analysis of the available literature examining the effects of prescription stimulants on specific measures of processing speed, planning, decision-making, and cognitive perseveration among healthy adult populations. The meta-analysis results indicated a positive influence of prescription stimulant medication on processing speed accuracy, with an overall mean effect size of g = 0.282 (95% CI 0.077, 0.488; n = 345). Neither improvements nor impairments were revealed for planning time, planning accuracy, advantageous decision-making, or cognitive perseveration; however findings are limited by the small number of studies examining these outcomes. Findings support that prescription stimulant medication may indeed act as a neurocognitive enhancer for accuracy measures of processing speed without impeding other areas of cognition. Considering that adults are already engaging in illegal use of prescription stimulants for academic enhancement, as well as the potential for stimulant misuse to have serious side effects, the establishment of public policies informed by interdisciplinary research surrounding this issue, whether restrictive or liberal, is of critical importance. PMID:27454675

Exposure to Violence Predicting Cortisol Response During Adolescence and Early Adulthood: Understanding Moderating Factors

PubMed Central

Heinze, Justin E.; Miller, Alison L.; Stoddard, Sarah A.; Zimmerman, Marc A.

2014-01-01

Previous research on the association between violence and biological stress regulation has been largely cross-sectional, and has also focused on childhood. Using longitudinal data from a low-income, high-risk, predominantly African-American sample (n = 266; 57 % female), we tested hypotheses about the influence of cumulative exposure to violence during adolescence and early adulthood on cortisol responses in early adulthood. We found that cumulative exposure to violence predicted an attenuated cortisol response. Further, we tested whether sex, mothers’ support, or fathers’ support moderated the effect of exposure to violence on cortisol responses. We found that the effect of cumulative exposure to violence on cortisol was modified by sex; specifically, males exposed to violence exhibited a more attenuated response pattern. In addition, the effect of cumulative exposure to violence on cortisol was moderated by the presence of fathers’ support during adolescence. The findings contribute to a better understanding of how cumulative exposure to violence influences biological outcomes, emphasizing the need to understand sex and parental support as moderators of risk. PMID:24458765

Neighborhood green, social support, physical activity, and stress: assessing the cumulative impact.

PubMed

Fan, Yingling; Das, Kirti V; Chen, Qian

2011-11-01

We estimate the cumulative stress mitigating impact of neighborhood greenness by investigating whether neighborhood green mitigates stress directly, and indirectly by encouraging physical activity and/or fostering social support. Using data from a recent community health survey in Chicago and two-stage instrumental variables regression modeling, we find that different components of neighborhood green play distinct roles in influencing stress. Park spaces are found to indirectly mitigate stress by fostering social support. Overall neighborhood vegetation is found to have direct stress mitigation impact, yet the impact is counteracted by its negative effect on social support. When comparing the effect size, park spaces show a more positive impact on health and well-being than the overall neighborhood vegetation level. Policy makers are recommended to focus on creating structured green spaces with public recreation and socialization opportunities rather than simply conserving green spaces in the neighborhood. Previous studies, as they often investigate the direct impact only and rarely use multiple measures of greenness, may have mis-estimated health benefits of neighborhood green. Published by Elsevier Ltd.

Challenges of implementing routine health behavior change support in a children's hospital setting.

PubMed

Elwell, Laura; Powell, Jane; Wordsworth, Sharon; Cummins, Carole

2014-07-01

Evidence indicates that health behavior change initiatives are often not implemented successfully. This qualitative study aims to understand the barriers and facilitators to implementation of health behavior change brief advice into routine practice in an acute children's hospital setting. Semi-structured interviews were conducted with health professionals working at a UK children's hospital (n=33). Participants were purposively sampled to incorporate a range of specialties, job roles and training. An inductive thematic framework analysis identified two emergent themes. These capture the challenges of implementing routine health behavior change support in a children's hospital setting: (1) 'health professional knowledge, beliefs and behaviors' and (2) 'patient and family related challenges'. This study enhances findings from previous research by outlining the challenges pediatric health professionals face in relation to supporting health behavior change. Challenges include failure to assume responsibility, low confidence, prioritization of the health provider relationship with patients and families, health provider and patient knowledge, and low patient and family motivation. Skills-based behavior change training is needed for pediatric health professionals to effectively support health behavior change. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

Five-year study of implant placement in regenerated bone and rehabilitation with telescopic crown retained dentures: a case report.

PubMed

Zafiropoulos, Gregory-George; Hoffmann, Oliver

2009-01-01

Various implant-supported restorations have been used successfully for several decades to rehabilitate edentulous patients. Telescopic crowns are a common treatment modality used to connect dentures to natural teeth. Although previous findings indicate that telescopic crowns can be placed successfully on implants to support overdentures, only limited data are available on this treatment approach. Eight months after extraction of all nonsalvageable teeth and socket preservation, 11 implants were inserted into the mandible and maxillae of one patient. These implants were restored 4 months later using telescopic crown-supported dentures. Bleeding on probing (BOP), plaque index (PI), clinical attachment (PAL), and radiographic bone level were evaluated over 5 years. All implants remained in function over the 5-year evaluation period. Radiography showed stable bone levels for all implants. No changes in BOP or PI (range, 2%-4% for both parameters) were observed over this time. The PAL deteriorated by 1.5 mm during the first 3 years, with no subsequent changes. We conclude that telescopic crowns can be used successfully as attachments for overdentures supported by implants in regenerated bone.

Psychosocial interactions during ISS missions

NASA Astrophysics Data System (ADS)

Kanas, N. A.; Salnitskiy, V. P.; Ritsher, J. B.; Gushin, V. I.; Weiss, D. S.; Saylor, S. A.; Kozerenko, O. P.; Marmar, C. R.

2007-02-01

Based on anecdotal reports from astronauts and cosmonauts, studies of space analog environments on Earth, and our previous research on the Mir Space Station, a number of psychosocial issues have been identified that can lead to problems during long-duration space expeditions. Several of these issues were studied during a series of missions to the International Space Station. Using a mood and group climate questionnaire that was completed weekly by crewmembers in space and personnel in mission control, we found no evidence to support the presence of predicted decrements in well-being during the second half or in any specific quarter of the missions. The results did support the predicted displacement of negative feelings to outside supervisors among both crew and ground subjects. There were several significant differences in mood and group perceptions between Americans and Russians and between crewmembers and mission control personnel. Crewmembers related cohesion to the support role of their leader, and mission control personnel related cohesion to both the task and support roles of their leader. These findings are discussed with reference to future space missions.

Redescription of Chimaera ogilbyi (Chimaeriformes; Chimaeridae) from the Indo-Australian region.

PubMed

Finucci, Brittany; White, William T; Kemper, Jenny M; Naylor, Gavin J P

2018-01-24

An integrated taxonomic approach, combining both morphological and molecular data, was adopted to investigate the Hydrolagus lemures-ogilbyi group in the Indo-Australian region. Single mitochondrial markers (CO1 and NADH2) provided evidence supporting the separation of four distinct species in this group. However, detailed morphological data collected from specimens from across their range failed to find any consistent differences, and many features previously considered to be diagnostic were found to be variable. Nuclear DNA data also failed to support the differences found with the single mitochondrial markers and, together with the morphological data, supported the hypothesis that only a single species in this group is present in the Indo-Australian region. In addition, the results failed to support the current generic placement of this group in Hydrolagus, suggesting they belong to the genus Chimaera with doubt over the validity of Hydrolagus as a valid genus. The oldest available name for this group is Chimaera ogilbyi and a redescription is provided. This species occurs throughout Australia, eastern Indonesia (Java, Bali, and Lombok) and northern Papua New Guinea.

Food insecurity, depression, and social support in HIV-infected Hispanic individuals.

PubMed

Kapulsky, Leonid; Tang, Alice M; Forrester, Janet E

2015-04-01

Previous research has identified an association between food insecurity and depression in a variety of world regions in both healthy and HIV-infected individuals. We examined this association in 183 HIV-infected Hispanic adults from the greater Boston area. We measured depression with the Burnam depression screen and food insecurity with the Radimer/Cornell Questionnaire. Dietary intake was assessed with an adapted version of the Block Food Frequency Questionnaire. Logistic regression models were created with depression as the outcome variable and food insecurity as the main predictor. In bivariate analyses, food insecurity was significantly associated with depression [odds ratio (OR) 2.5; 95% confidence interval (CI) 1.1, 5.5; p = 0.03]. When we accounted for social support, food insecurity was no longer significant. We found no differences in the quality or quantity of dietary intake between the food insecure and food secure groups. Our findings highlight the importance of social support in the association between food insecurity and depression. Food insecurity may reflect social support more than actual dietary intake in this population.

Validating the German Version of the Quality of Relationship Inventory: Confirming the Three-Factor Structure and Report of Psychometric Properties

PubMed Central

Reiner, Iris; Beutel, Manfred; Skaletz, Christian; Brähler, Elmar; Stöbel-Richter, Yve

2012-01-01

Research on psychosocial influences such as relationship characteristics has received increased attention in the clinical as well as social-psychological field. Several studies demonstrated that the quality of relationships, in particular with respect to the perceived support within intimate relationships, profoundly affects individuals' mental and physical health. There is, however, a limited choice of valid and internationally known assessments of relationship quality in Germany. We report the validation of the German version of the Quality of Relationships Inventory (QRI). First, we evaluated its factor structure in a representative German sample of 1.494 participants by means of confirmatory factor analysis. Our findings support the previously proposed three-factor structure. Second, importance and satisfaction with different relationship domains (family/children and relationship/sexuality) were linked with the QRI scales, demonstrating high construct validity. Finally, we report sex and age differences regarding the perceived relationship support, conflict and depth in our German sample. In conclusion, the QRI is a reliable and valid measurement to assess social support in romantic relationships in the German population. PMID:22662151

Parents' perceptions of support when a child has cancer: a longitudinal perspective.

PubMed

Norberg, Annika Lindahl; Boman, Krister K

2007-01-01

Previous research has shown perceived social support to be important for maintaining psychological well-being. However, severe stress may influence a person's perception of the availability and value of support from others. In this prospective study, we investigated changes in subjectively perceived social support among parents of children with cancer. Furthermore, we examined the role of parent gender and emotional distress (anxiety and depression) in predicting change in perceived support. Fifty-one parents (29 mothers and 22 fathers) participated. Perceived support, anxiety, and depression were assessed with self-report questionnaires. Parents were examined on 2 occasions. The initial assessment was completed within the first 6 months of the child's cancer treatment. At the time of the follow-up assessment 12 to 24 months later, cancer treatment was completed for all patients. On a group level, parents reported significantly poorer perceived support at the second assessment. However, further examination showed that for one fourth of the group, perceived support was improved. Depressive symptoms during the child's treatment predicted decline in perceived support. Anxiety and gender were not predictive of a change in perceived support.A comprehensive pediatric care model should pay particular attention to parents with a tottering perception of social support. Furthermore, the findings underscore the importance of early psychosocial attention to avoid negative long-term consequences of depression. Being in the frontline of patient care, the pediatric oncology nurse plays an important role in identifying early parents at risk and in shaping parents' perception of support.

Effect of the G375C and G346E achondroplasia mutations on FGFR3 activation.

PubMed

He, Lijuan; Serrano, Christopher; Niphadkar, Nitish; Shobnam, Nadia; Hristova, Kalina

2012-01-01

Two mutations in FGFR3, G380R and G375C are known to cause achondroplasia, the most common form of human dwarfism. The G380R mutation accounts for 98% of the achondroplasia cases, and thus has been studied extensively. Here we study the effect of the G375C mutation on the phosphorylation and the cross-linking propensity of full-length FGFR3 in HEK 293 cells, and we compare the results to previously published results for the G380R mutant. We observe identical behavior of the two achondroplasia mutants in these experiments, a finding which supports a direct link between the severity of dwarfism phenotypes and the level and mechanism of FGFR3 over-activation. The mutations do not increase the cross-linking propensity of FGFR3, contrary to previous expectations that the achondroplasia mutations stabilize the FGFR3 dimers. Instead, the phosphorylation efficiency within un-liganded FGFR3 dimers is increased, and this increase is likely the underlying cause for pathogenesis in achondroplasia. We further investigate the G346E mutation, which has been reported to cause achondroplasia in one case. We find that this mutation does not increase FGFR3 phosphorylation and decreases FGFR3 cross-linking propensity, a finding which raises questions whether this mutation is indeed a genetic cause for human dwarfism.

Effect of the G375C and G346E Achondroplasia Mutations on FGFR3 Activation

PubMed Central

He, Lijuan; Serrano, Christopher; Niphadkar, Nitish; Shobnam, Nadia; Hristova, Kalina

2012-01-01

Two mutations in FGFR3, G380R and G375C are known to cause achondroplasia, the most common form of human dwarfism. The G380R mutation accounts for 98% of the achondroplasia cases, and thus has been studied extensively. Here we study the effect of the G375C mutation on the phosphorylation and the cross-linking propensity of full-length FGFR3 in HEK 293 cells, and we compare the results to previously published results for the G380R mutant. We observe identical behavior of the two achondroplasia mutants in these experiments, a finding which supports a direct link between the severity of dwarfism phenotypes and the level and mechanism of FGFR3 over-activation. The mutations do not increase the cross-linking propensity of FGFR3, contrary to previous expectations that the achondroplasia mutations stabilize the FGFR3 dimers. Instead, the phosphorylation efficiency within un-liganded FGFR3 dimers is increased, and this increase is likely the underlying cause for pathogenesis in achondroplasia. We further investigate the G346E mutation, which has been reported to cause achondroplasia in one case. We find that this mutation does not increase FGFR3 phosphorylation and decreases FGFR3 cross-linking propensity, a finding which raises questions whether this mutation is indeed a genetic cause for human dwarfism. PMID:22529939

The changing association between prenatal participation in WIC and birth outcomes in New York City.

PubMed

Joyce, Ted; Gibson, Diane; Colman, Silvie

2005-01-01

We analyze the relationship between prenatal WIC participation and birth outcomes in New York City from 1988-2001. The analysis is unique for several reasons. First, we have over 800,000 births to women on Medicaid, the largest sample ever used to analyze prenatal participation in WIC. Second, we focus on measures of fetal growth distinct from preterm birth, since there is little clinical support for a link between nutritional supplementation and premature delivery. Third, we restrict the primary analysis to women on Medicaid who have no previous live births and who initiate prenatal care within the first four months of pregnancy. Our goal is to lessen heterogeneity between WIC and non-WIC participants by limiting the sample to highly motivated women who have no experience with WIC from a previous pregnancy. Fourth, we analyze a large sub-sample of twin deliveries. Multifetal pregnancies increase the risk of anemia and fetal growth retardation and thus may benefit more than singletons from nutritional supplementation. We find no relationship between prenatal WIC participation and measures of fetal growth among singletons. We find a modest pattern of association between WIC and fetal growth among U.S.-born Black twins. Our findings suggest that prenatal participation in WIC has had a minimal effect on adverse birth outcomes in New York City.

Paternal occupational exposures and childhood cancer.

PubMed Central

Feychting, M; Plato, N; Nise, G; Ahlbom, A

2001-01-01

The objective of the study described here was to test the hypothesis that paternal occupational exposure near conception increases the risk of cancer in the offspring. We conducted a cohort study based on a population of 235,635 children born shortly after two different censuses in Sweden. The children were followed from birth to 14 years, and cases of cancer were identified in the Swedish Cancer Registry. Occupational hygienists assessed the probability of exposure to different agents in each combination of the father's industry and occupation as reported in the censuses. We also analyzed individual job titles. We compared the cancer incidence among children of exposed fathers to that among children of unexposed fathers using Cox proportional hazards modeling. The main findings were an increased risk of nervous system tumors related to paternal occupational exposure to pesticides [relative risk (RR) = 2.36; 95% confidence interval (CI), 1.27-4.39] and work as a painter (RR = 3.65; 95% CI, 1.71-7.80), and an increased risk of leukemia related to wood work by fathers (RR = 2.18; 95% CI, 1.26-3.78). We found no associations between childhood leukemia and paternal exposure to pesticides or paint. Our results support previous findings of an increased risk of childhood brain tumors and leukemia associated with certain paternal occupational exposures. Some findings in previous studies were not confirmed in this study. PMID:11266332

A Large-Scale, Higher-Level, Molecular Phylogenetic Study of the Insect Order Lepidoptera (Moths and Butterflies)

PubMed Central

Regier, Jerome C.; Mitter, Charles; Zwick, Andreas; Bazinet, Adam L.; Cummings, Michael P.; Kawahara, Akito Y.; Sohn, Jae-Cheon; Zwickl, Derrick J.; Cho, Soowon; Davis, Donald R.; Baixeras, Joaquin; Brown, John; Parr, Cynthia; Weller, Susan; Lees, David C.; Mitter, Kim T.

2013-01-01

Background Higher-level relationships within the Lepidoptera, and particularly within the species-rich subclade Ditrysia, are generally not well understood, although recent studies have yielded progress. We present the most comprehensive molecular analysis of lepidopteran phylogeny to date, focusing on relationships among superfamilies. Methodology / Principal Findings 483 taxa spanning 115 of 124 families were sampled for 19 protein-coding nuclear genes, from which maximum likelihood tree estimates and bootstrap percentages were obtained using GARLI. Assessment of heuristic search effectiveness showed that better trees and higher bootstrap percentages probably remain to be discovered even after 1000 or more search replicates, but further search proved impractical even with grid computing. Other analyses explored the effects of sampling nonsynonymous change only versus partitioned and unpartitioned total nucleotide change; deletion of rogue taxa; and compositional heterogeneity. Relationships among the non-ditrysian lineages previously inferred from morphology were largely confirmed, plus some new ones, with strong support. Robust support was also found for divergences among non-apoditrysian lineages of Ditrysia, but only rarely so within Apoditrysia. Paraphyly for Tineoidea is strongly supported by analysis of nonsynonymous-only signal; conflicting, strong support for tineoid monophyly when synonymous signal was added back is shown to result from compositional heterogeneity. Conclusions / Significance Support for among-superfamily relationships outside the Apoditrysia is now generally strong. Comparable support is mostly lacking within Apoditrysia, but dramatically increased bootstrap percentages for some nodes after rogue taxon removal, and concordance with other evidence, strongly suggest that our picture of apoditrysian phylogeny is approximately correct. This study highlights the challenge of finding optimal topologies when analyzing hundreds of taxa. It also shows that some nodes get strong support only when analysis is restricted to nonsynonymous change, while total change is necessary for strong support of others. Thus, multiple types of analyses will be necessary to fully resolve lepidopteran phylogeny. PMID:23554903

CHANGES IN PATELLOFEMORAL JOINT STRESS DURING RUNNING WITH THE APPLICATION OF A PREFABRICATED FOOT ORTHOTIC.

PubMed

Almonroeder, Thomas G; Benson, Lauren C; O'Connor, Kristian M

2015-12-01

Foot orthotics are commonly utilized in the treatment of patellofemoral pain (PFP) and have shown clinical benefit; however, their mechanism of action remains unclear. Patellofemoral joint stress (PFJS) is thought to be one of the main etiological factors associated with PFP. The primary purpose of this study was to investigate the effects of a prefabricated foot orthotic with 5 ° of medial rearfoot wedging on the magnitude and the timing of the peak PFJS in a group of healthy female recreational athletes. The hypothesis was that there would be significant reduction in the peak patellofemoral joint stress and a delay in the timing of this peak in the orthotic condition. Cross-sectional. Kinematic and kinetic data were collected during running trials in a group of healthy, female recreational athletes. The knee angle and moment data in the sagittal plane were incorporated into a previously developed model to estimate patellofemoral joint stress. The dependent variables of interest were the peak patellofemoral joint stress as well as the percentage of stance at which this peak occurred, as both the magnitude and the timing of the joint loading are thought to be important in overuse running injuries. The peak patellofemoral joint stress significantly increased in the orthotic condition by 5.8% (p=.02, ES=0.24), which does not support the initial hypothesis. However, the orthotic did significantly delay the timing of the peak during the stance phase by 3.8% (p=.002, ES=0.47). The finding that the peak patellofemoral joint stress increased in the orthotic condition did not support the initial hypothesis. However, the finding that the timing of this peak was delayed to later in the stance phase in the orthotic condition did support the initial hypothesis and may be related to the clinical improvements previously reported in subjects with PFP. Level 4.

Insomnia with objective short sleep duration is associated with longer duration of insomnia in the Freiburg Insomnia Cohort compared to insomnia with normal sleep duration, but not with hypertension

PubMed Central

Johann, Anna F.; Hertenstein, Elisabeth; Kyle, Simon D.; Baglioni, Chiara; Feige, Bernd; Nissen, Christoph; McGinness, Alastair J.; Riemann, Dieter; Spiegelhalder, Kai

2017-01-01

Study objectives To replicate the association between insomnia with objective short sleep duration and hypertension, type 2 diabetes and duration of insomnia. Design Retrospective case-control study. Setting Department of Psychiatry and Psychotherapy, Medical Center—University of Freiburg. Participants 328 patients with primary insomnia classified according to DSM-IV criteria (125 males, 203 females, 44.3 ± 12.2 years). Interventions N/A Measurements All participants were investigated using polysomnography, blood pressure measurements, and fasting routine laboratory. Results Insomnia patients with short sleep duration (< 6 hours) in the first night of laboratory sleep presented with a longer duration of insomnia compared to those with normal sleep duration (≥ 6 hours) in the first night of laboratory sleep. Insomnia patients who were categorised as short sleepers in either night were not more likely to suffer from hypertension (systolic blood pressure of ≥ 140 mm Hg, diastolic blood pressure of ≥ 90 mm Hg, or a previously established diagnosis). Data analysis showed that insomnia patients with objective short sleep duration were not more likely to suffer from type 2 diabetes (fasting plasma glucose level of ≥ 126 mg/dl, or a previously established diagnosis). However, the diabetes analysis was only based on a very small number of diabetes cases. As a new finding, insomnia patients who were categorised as short sleepers in either night presented with increases in liver enzyme levels. Conclusions The finding on insomnia duration supports the concept of two distinct sub-groups of insomnia, namely insomnia with, and without, objectively determined short sleep duration. However, our data challenges previous findings that insomnia patients with short sleep duration are more likely to suffer from hypertension. PMID:28746413

Insomnia with objective short sleep duration is associated with longer duration of insomnia in the Freiburg Insomnia Cohort compared to insomnia with normal sleep duration, but not with hypertension.

PubMed

Johann, Anna F; Hertenstein, Elisabeth; Kyle, Simon D; Baglioni, Chiara; Feige, Bernd; Nissen, Christoph; McGinness, Alastair J; Riemann, Dieter; Spiegelhalder, Kai

2017-01-01

To replicate the association between insomnia with objective short sleep duration and hypertension, type 2 diabetes and duration of insomnia. Retrospective case-control study. Department of Psychiatry and Psychotherapy, Medical Center-University of Freiburg. 328 patients with primary insomnia classified according to DSM-IV criteria (125 males, 203 females, 44.3 ± 12.2 years). N/A. All participants were investigated using polysomnography, blood pressure measurements, and fasting routine laboratory. Insomnia patients with short sleep duration (< 6 hours) in the first night of laboratory sleep presented with a longer duration of insomnia compared to those with normal sleep duration (≥ 6 hours) in the first night of laboratory sleep. Insomnia patients who were categorised as short sleepers in either night were not more likely to suffer from hypertension (systolic blood pressure of ≥ 140 mm Hg, diastolic blood pressure of ≥ 90 mm Hg, or a previously established diagnosis). Data analysis showed that insomnia patients with objective short sleep duration were not more likely to suffer from type 2 diabetes (fasting plasma glucose level of ≥ 126 mg/dl, or a previously established diagnosis). However, the diabetes analysis was only based on a very small number of diabetes cases. As a new finding, insomnia patients who were categorised as short sleepers in either night presented with increases in liver enzyme levels. The finding on insomnia duration supports the concept of two distinct sub-groups of insomnia, namely insomnia with, and without, objectively determined short sleep duration. However, our data challenges previous findings that insomnia patients with short sleep duration are more likely to suffer from hypertension.

Autism-related neuroligin-3 mutation alters social behavior and spatial learning.

PubMed

Jaramillo, Thomas C; Liu, Shunan; Pettersen, Ami; Birnbaum, Shari G; Powell, Craig M

2014-04-01

Multiple candidate genes have been identified for autism spectrum disorders. While some of these genes reach genome-wide significance, others, such as the R451C point mutation in the synaptic cell adhesion molecule neuroligin-3, appear to be rare. Interestingly, two brothers with the same R451C point mutation in neuroligin-3 present clinically on seemingly disparate sides of the autism spectrum. These clinical findings suggest genetic background may play a role in modifying the penetrance of a particular autism-associated mutation. Animal models may contribute additional support for such mutations as functionally relevant and can provide mechanistic insights. Previously, in collaboration with the Südhof laboratory, we reported that mice with an R451C substitution in neuroligin-3 displayed social deficits and enhanced spatial learning. While some of these behavioral abnormalities have since been replicated independently in the Südhof laboratory, observations from the Crawley laboratory failed to replicate these findings in a similar neuroligin-3 mutant mouse model and suggested that genetic background may contribute to variation in observations across laboratories. Therefore, we sought to replicate our findings in the neuroligin-3 R451C point mutant knock-in mouse model (NL3R451C) in a different genetic background. We backcrossed our NL3R451C mouse line onto a 129S2/SvPasCrl genetic background and repeated a subset of our previous behavioral testing. NL3R451C mice on a 129S2/SvPasCrl displayed social deficits, enhanced spatial learning, and increased locomotor activity. These data extend our previous findings that NL3R451C mice exhibit autism-relevant behavioral abnormalities and further suggest that different genetic backgrounds can modify this behavioral phenotype through epistatic genetic interactions. © 2014 International Society for Autism Research, Wiley Periodicals, Inc.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Han, Cheongho; Jung, Youn Kil; Bennett, David P.

Recently, the discovery of a Venus-mass planet orbiting a brown-dwarf host in a binary system was reported from the analysis of the microlensing event OGLE-2013-BLG-0723. We reanalyze the event considering the possibility of other interpretations. From this, we find a new solution where the lens is composed of two bodies, in contrast to the three-body solution of the previous analysis. The new solution better explains the observed light curve than the previous solution with Δ χ {sup 2} ∼ 202, suggesting that the new solution is a correct model for the event. From the estimation of the physical parameters basedmore » on the new interpretation, we find that the lens system is composed of two low-mass stars with ∼0.2 M {sub ⊙} and ∼0.1 M {sub ⊙} and located at a distance of ∼3 kpc. The fact that the physical parameters correspond to those of the most common lens population located at a distance with a large lensing probability further supports the likelihood of the new interpretation. Considering that two dramatically different solutions can approximately explain the observed light curve, the event suggests the need for carefully testing all possible lens-system geometries.« less

Representation and treatment allocation of racial groups in dermatologic therapy trials: A 2-year review of the literature.

PubMed

Park, Christina K; Alhusayen, Raed

2018-02-15

Although most investigators would agree that including minority races in clinical trials is important, recruitment and retention may differ among these populations. The objective of this review was to perform an audit of phase III dermatologic therapy trials to determine representation for minority groups and to explore the possibility of racial allocation bias. In this review of 11 dermatology or general medicine journals in 2015-16, we did not find evidence of systemic racial allocation bias. We did however note variation in the proportion of minority races included in studies; whereas some trials had high success in recruiting minorities, many did not. Furthermore, most studies did not provide information on individual racial groups and rather presented an 'other' category. This supports findings from previous reviews of dermatologic therapy trials that suggest that most participants are white, race data are not included for many studies, and there is underrepresentation of some racial groups. We conclude that although there is no evidence of racial allocation bias in the previous two years, there remains a need for standardization in the reporting of racial groups and for increased participant diversity in dermatologic therapy trials.

Emotional reactivity across the adult life span: the cognitive pragmatics make a difference.

PubMed

Kunzmann, Ute; Richter, David

2009-12-01

Previously, we found that during films about age-typical losses, older adults experienced greater sadness than young adults, whereas their physiological responses were just as large. In the present study, our goal was to replicate this finding and extend past work by examining the role of cognitive functioning in age differences in emotional reactivity. We measured the autonomic and subjective responses of 240 adults (age range=20 to 70) while they viewed films about age-typical losses from our previous work. Findings were fully supportive of our past work: The magnitude of subjective reactions to our films increased linearly over the adult years, whereas there were no age differences on the level of physiological reactivity. We also found that the subjective reactions of adults with high pragmatic intelligence were of moderate size independent of their own age or the age relevance of the emotion elicitor. In contrast, the subjective reactions of adults low on pragmatic intelligence were more variable. Together, this evidence suggests that research on age differences in emotional reactivity may benefit from a perspective that considers individual difference variables as well as contextual variations. PsycINFO Database Record Copyright (c) 2009 APA, all rights reserved

The role of stressful life events preceding death by suicide: Evidence from two samples of suicide decedents.

PubMed

Buchman-Schmitt, Jennifer M; Chu, Carol; Michaels, Matthew S; Hames, Jennifer L; Silva, Caroline; Hagan, Christopher R; Ribeiro, Jessica D; Selby, Edward A; Joiner, Thomas E

2017-10-01

Stressful life events (SLEs) are associated with increased risk for suicidal behavior. Less is known regarding the intensity of SLEs and how this may vary as a function of suicide attempt history. As a large percentage of suicide decedents do not have a history of suicidal behavior, SLEs precipitating suicide may help characterize suicidality in this understudied population. This paper examines the intensity, number, and accumulation of SLEs preceding death by suicide among decedents with varying suicide attempt histories. Suicide attempts, SLEs, and suicide methods were examined in two samples: 62 prison-based and 117 community-based suicide decedents. Regression was used to compare the level of stressor precipitating death by suicide in decedents who died on a first attempt versus multiple previous attempts. A non-significant trend was observed in the prison population which was supported by significant findings in the community-based sample. Decedents who died on a first attempt experienced a stressor of a lower magnitude when compared to decedents with multiple previous suicide attempts. We discuss the implications of these findings in relation to the stress-diathesis model for suicide. Copyright © 2017 Elsevier B.V. All rights reserved.

Robustness of inflation to inhomogeneous initial conditions

NASA Astrophysics Data System (ADS)

Clough, Katy; Lim, Eugene A.; DiNunno, Brandon S.; Fischler, Willy; Flauger, Raphael; Paban, Sonia

2017-09-01

We consider the effects of inhomogeneous initial conditions in both the scalar field profile and the extrinsic curvature on different inflationary models. In particular, we compare the robustness of small field inflation to that of large field inflation, using numerical simulations with Einstein gravity in 3+1 dimensions. We find that small field inflation can fail in the presence of subdominant gradient energies, suggesting that it is much less robust to inhomogeneities than large field inflation, which withstands dominant gradient energies. However, we also show that small field inflation can be successful even if some regions of spacetime start out in the region of the potential that does not support inflation. In the large field case, we confirm previous results that inflation is robust if the inflaton occupies the inflationary part of the potential. Furthermore, we show that increasing initial scalar gradients will not form sufficiently massive inflation-ending black holes if the initial hypersurface is approximately flat. Finally, we consider the large field case with a varying extrinsic curvature K, such that some regions are initially collapsing. We find that this may again lead to local black holes, but overall the spacetime remains inflationary if the spacetime is open, which confirms previous theoretical studies.

Sex differences in neural efficiency: Are they due to the stereotype threat effect?☆

PubMed Central

Dunst, Beate; Benedek, Mathias; Bergner, Sabine; Athenstaedt, Ursula; Neubauer, Aljoscha C.

2013-01-01

The neural efficiency hypothesis postulates a more efficient use of brain resources in more intelligent people as compared to less intelligent ones. However, this relationship was found to be moderated by sex and task content. While the phenomenon of neural efficiency was previously supported for men when performing visuo-spatial tasks it occurred for women only when performing verbal tasks. One possible explanation for this finding could be provided by the well-studied phenomenon called stereotype threat. Stereotype threat arises when a negative stereotype of one’s own group is made salient and can result in behavior that confirms the stereotype. Overall, 32 boys and 31 girls of varying intellectual ability were tested with a mental rotation task, either under a stereotype exposure or a no-stereotype exposure condition while measuring their EEG. The behavioral results show that an activated negative stereotype not necessarily hampers the performance of girls. Physiologically, a confirmation of the neural efficiency phenomenon was only obtained for boys working under a no-stereotype exposure condition. This result pattern replicates previous findings without threat and thus suggests that sex differences in neural efficiency during visuo-spatial tasks may not be due to the stereotype threat effect. PMID:24092950

Fear of childbirth: mothers' experiences of team-midwifery care - a follow-up study.

PubMed

Lyberg, Anne; Severinsson, Elisabeth

2010-05-01

The aim of this study was to illuminate mothers' fear of childbirth and their experiences of the team-midwifery care model during pregnancy, childbirth and the postnatal period. Maternal anxiety and fear of childbirth lead to emotional suffering and affected women's well-being. A previous negative experience of childbirth may result in postnatal depression or avoidance of future pregnancies. This hermeneutic study comprised interviews with 13 women, which were audio-taped and transcribed verbatim, after which interpretative content analysis was performed. Ethical approval was granted. The findings revealed one main theme: The woman's right to ownership of the pregnancy, childbirth and postnatal care as a means of maintaining dignity and three themes; Being aware of barriers and reasons for fear; Being prepared for childbirth and Being confirmed and treated with dignity by the midwife. Each theme contained several sub-themes. The findings contribute insights into how midwives can be educated to reduce fear of childbirth and promote positive birth experiences, despite the existence of negative memories of previous births. In order to achieve continuity and a trusting relationship it is necessary to organise leadership and to adopt models that are flexible and support women's health.

Quantitative account of social interactions in a mental health care ecosystem: cooperation, trust and collective action.

PubMed

Cigarini, Anna; Vicens, Julián; Duch, Jordi; Sánchez, Angel; Perelló, Josep

2018-02-28

Mental disorders have an enormous impact in our society, both in personal terms and in the economic costs associated with their treatment. In order to scale up services and bring down costs, administrations are starting to promote social interactions as key to care provision. We analyze quantitatively the importance of communities for effective mental health care, considering all community members involved. By means of citizen science practices, we have designed a suite of games that allow to probe into different behavioral traits of the role groups of the ecosystem. The evidence reinforces the idea of community social capital, with caregivers and professionals playing a leading role. Yet, the cost of collective action is mainly supported by individuals with a mental condition - which unveils their vulnerability. The results are in general agreement with previous findings but, since we broaden the perspective of previous studies, we are also able to find marked differences in the social behavior of certain groups of mental disorders. We finally point to the conditions under which cooperation among members of the ecosystem is better sustained, suggesting how virtuous cycles of inclusion and participation can be promoted in a 'care in the community' framework.

Sleep duration and all-cause mortality: a critical review of measurement and associations

PubMed Central

Kurina, Lianne M.; McClintock, Martha K.; Chen, Jen-Hao; Waite, Linda J.; Thisted, Ronald A.; Lauderdale, Diane S.

2013-01-01

Purpose Variation in sleep duration has been linked with mortality risk. The purpose of this review is to provide an updated evaluation of the literature on sleep duration and mortality, including a critical examination of sleep duration measurement and an examination of correlates of self-reported sleep duration. Methods We did a systematic search of studies reporting associations between sleep duration and all-cause mortality and extracted the sleep duration measure and the measure(s) of association. Results We identified 42 prospective studies of sleep duration and mortality drawing on 35 distinct study populations across the globe. Unlike previous reviews, we find that the published literature does not support a consistent finding of an association between self-reported sleep duration and mortality. Most studies have employed survey measures of sleep duration, which are not highly correlated with estimates based on physiologic measures. Conclusions Despite a large body of literature, it is premature to conclude, as previous reviews have, that a robust, U-shaped association between sleep duration and mortality risk exists across populations. Careful attention must be paid to measurement, response bias, confounding, and reverse causation in the interpretation of associations between sleep duration and mortality. PMID:23622956

Outer region scaling using the freestream velocity for nonuniform open channel flow over gravel

NASA Astrophysics Data System (ADS)

Stewart, Robert L.; Fox, James F.

2017-06-01

The theoretical basis for outer region scaling using the freestream velocity for nonuniform open channel flows over gravel is derived and tested for the first time. Owing to the gradual expansion of the flow within the nonuniform case presented, it is hypothesized that the flow can be defined as an equilibrium turbulent boundary layer using the asymptotic invariance principle. The hypothesis is supported using similarity analysis to derive a solution, followed by further testing with experimental datasets. For the latter, 38 newly collected experimental velocity profiles across three nonuniform flows over gravel in a hydraulic flume are tested as are 43 velocity profiles previously published in seven peer-reviewed journal papers that focused on fluid mechanics of nonuniform open channel over gravel. The findings support the nonuniform flows as equilibrium defined by the asymptotic invariance principle, which is reflective of the consistency of the turbulent structure's form and function within the expanding flow. However, roughness impacts the flow structure when comparing across the published experimental datasets. As a secondary objective, we show how previously published mixed scales can be used to assist with freestream velocity scaling of the velocity deficit and thus empirically account for the roughness effects that extend into the outer region of the flow. One broader finding of this study is providing the theoretical context to relax the use of the elusive friction velocity when scaling nonuniform flows in gravel bed rivers; and instead to apply the freestream velocity. A second broader finding highlighted by our results is that scaling of nonuniform flow in gravel bed rivers is still not fully resolved theoretically since mixed scaling relies to some degree on empiricism. As researchers resolve the form and function of macroturbulence in the outer region, we hope to see the closing of this research gap.

A Motivational Model of Physical Education and Links to Enjoyment, Knowledge, Performance, Total Physical Activity and Body Mass Index

PubMed Central

Gråstén, Arto; Watt, Anthony

2017-01-01

The present paper examined the full sequence of the Hierarchical Model of Motivation in physical education (PE) including motivational climate, basic psychological needs, intrinsic motivation, and related links to contextual enjoyment, knowledge, performance, and total moderate to vigorous physical activity (MVPA). Gender differences and correlations with body mass index (BMI) were also analyzed. Cross-sectional data was represented by self-reports and objective assessments of 770 middle school students (52% of girls) in North-East Finland. The results showed that task-involving climate in girls’ PE classes was related to enjoyment and knowledge through physical competence and intrinsic motivation, whereas task-involving climate was associated with enjoyment and knowledge via competence and autonomy, and total MVPA via autonomy, intrinsic motivation, and knowledge within boys. This may indicate that girls and boys perceive PE classes in a different way. Graded PE assessments appeared to be essential in motivating both girls and boys to participate in greater total MVPA, whereas BMI was negatively linked with competence and social relatedness only among girls. Although, the current and previous empirical findings supported task-involving teaching methods in PE, in some cases, ego-involving climate should be considered. Therefore, both task- and ego-involving teaching practices can be useful ways of developing preferred behaviors in PE classes. Key points The present findings indicated that girls and boys perceive PE classes in a different way. Graded PE assessments appeared to be essential in motivating both girls and boys to participate in greater total MVPA, whereas BMI was negatively linked with competence and social relatedness only among girls. Although, the current and previous empirical findings supported task-involving teaching methods in PE, in some cases, ego-involving climate should be considered. Both task- and ego-involving teaching practices can be useful ways of developing preferred behaviors in PE classes. PMID:28912648

Why Does the “Sinner” Act Prosocially? The Mediating Role of Guilt and the Moderating Role of Moral Identity in Motivating Moral Cleansing

PubMed Central

Ding, Wan; Xie, Ruibo; Sun, Binghai; Li, Weijian; Wang, Duo; Zhen, Rui

2016-01-01

Numerous studies have found that people tend to commit prosocial acts subsequent to previous immoral acts, as a response to the latter. This phenomenon is called moral cleansing or moral compensation. However, the specific mechanism how previous immoral acts motivate moral compensatory behaviors is still not fully understood. This study aimed to examine the roles of guilt and moral identity in the relation between previous immoral acts and subsequent prosocial behaviors to clarify the mechanism. Based on the extant research, the current study proposed a moderated mediation model to illustrate the process of moral cleansing. Specifically, a previous immoral act motivates guilt, which further leads to subsequent prosocial behaviors, while moral identity facilitates this process. The participants were primed by a recalling task (immoral act vs. a neutral event). The results support the hypothesized model and provide a framework that explains moral cleansing by integrating the roles of guilt and moral identity. These findings highlight the dynamic nature of people’s morality with regard to how people adapt moral behaviors to protect their moral self-image. PMID:27660617

Using Implicit Instructional Cues to Influence False Memory Induction.

PubMed

Cirelli, Laura K; Dickinson, Joël; Poirier, Marie

2015-10-01

Previous research has shown that explicit cues specific to the encoding process (endogenous) or characteristic of the stimuli themselves (exogenous) can be used to direct a reader's attentional resources towards either relational or item-specific information. By directing attention to relational information (and therefore away from item-specific information) the rate of false memory induction can be increased. The purpose of the current study was to investigate if a similar effect would be found by manipulating implicitly endogenous cues. An instructional manipulation was used to influence the perceptual action participants performed on word stimuli during the encoding of DRM list words. Results demonstrated that the instructional conditions that encouraged faster processing also led to an increased rate of false memory induction for semantically related words, supporting the hypothesis that attention was directed towards relational information. This finding supports the impoverished relational processing account of false memory induction. This supports the idea that implicitly endogenous cues, exogenous cues (like font) or explicitly endogenous cues (like training) can direct attentional resources during encoding.

Factors Related to Breastfeeding Discontinuation Between Hospital Discharge and 2 Weeks Postpartum

PubMed Central

Brand, Elizabeth; Kothari, Catherine; Stark, Mary Ann

2011-01-01

Although breastfeeding is known to be beneficial to both mother and infant, many women encounter barriers to breastfeeding, even after successful breastfeeding initiation, which may put them at greater risk for early cessation of breastfeeding. The objectives of this study were to conduct a secondary analysis of data from a longitudinal study of postpartum depression to (a) examine factors related to very early discontinuation of breastfeeding (at 2 weeks postpartum) following hospital discharge and (b) identify women’s reasons for very early cessation of breastfeeding. The results of this study support findings from previous research. Having a perceived support system, whether it is personal or professional, may have an effect on both the initiation and duration of breastfeeding. Educating expectant and new mothers, especially women who encounter multiple barriers and are at risk for very early cessation of breastfeeding, of the benefits of breastfeeding and supporting them in developing efficient techniques and problem-solving skills can help increase the duration of breastfeeding. PMID:22211058

Life at the State summit: views and experiences of 18 psychiatric leaders.

PubMed

Gaver, K D; Norman, M L; Greenblatt, M

1984-03-01

In 1981 the American Psychiatric Association appointed an ad hoc committee to investigate the decline of psychiatrist leadership of public mental health programs. As part of the committee's research, the 18 psychiatrists who were then state commissioners or directors of mental health were surveyed on how they got their jobs and on their backgrounds, present responsibilities, support systems, and future plans. The results of the survey are discussed and presented in tabular format. The psychiatrists surveyed recommended that future commissioners have backgrounds similar to their own, which consisted of a great deal of previous on-the-job experience in mental health administration but little formal training or education in administration; none of the commissioners had obtained APA certification in administrative psychiatry. The commissioners felt they received the most support in their work from their subordinates; among the major groups listed as providing support, APA ranked lowest. The authors discuss the implications of the survey findings as well as issues surrounding the administration of public mental health programs by psychiatrists.

Re-evaluation of Yellowstone grizzly bear population dynamics not supported by empirical data: response to Doak & Cutler

USGS Publications Warehouse

van Manen, Frank T.; Ebinger, Michael R.; Haroldson, Mark A.; Harris, Richard B.; Higgs, Megan D.; Cherry, Steve; White, Gary C.; Schwartz, Charles C.

2014-01-01

Doak and Cutler critiqued methods used by the Interagency Grizzly Bear Study Team (IGBST) to estimate grizzly bear population size and trend in the Greater Yellowstone Ecosystem. Here, we focus on the premise, implementation, and interpretation of simulations they used to support their arguments. They argued that population increases documented by IGBST based on females with cubs-of-the-year were an artifact of increased search effort. However, we demonstrate their simulations were neither reflective of the true observation process nor did their results provide statistical support for their conclusion. They further argued that survival and reproductive senescence should be incorporated into population projections, but we demonstrate their choice of extreme mortality risk beyond age 20 and incompatible baseline fecundity led to erroneous conclusions. The conclusions of Doak and Cutler are unsubstantiated when placed within the context of a thorough understanding of the data, study system, and previous research findings and publications.

Balanced identity in the minimal groups paradigm.

PubMed

Dunham, Yarrow

2013-01-01

Balanced Identity Theory [1] formalizes a set of relationships between group attitude, group identification, and self-esteem. While these relationships have been demonstrated for familiar and highly salient social categories, questions remain regarding the generality of the balance phenomenon and its causal versus descriptive status. Supporting the generality and rapidity of cognitive balance, four studies demonstrate that the central predictions of balance are supported even for previously unfamiliar "minimal" social groups to which participants have just been randomly assigned. Further, supporting a causal as opposed to merely descriptive interpretation, manipulating any one component of the balance model (group attitude, group identification, or self-esteem) affects at least one of the related components. Interestingly, the broader pattern of cognitive balance was preserved across such manipulations only when the manipulation strengthens as opposes to weakens the manipulated construct. Taken together, these findings indicate that Balanced Identity Theory has promise as a general theory of intergroup attitudes, and that it may be able to shed light on prior inconsistencies concerning the relationship between self-esteem and intergroup bias.

“Breakthrough” osmosis and unusually high power densities in Pressure-Retarded Osmosis in non-ideally semi-permeable supported membranes

PubMed Central

Yaroshchuk, Andriy

2017-01-01

Osmosis is the movement of solvent across a membrane induced by a solute-concentration gradient. It is very important for cell biology. Recently, it has started finding technological applications in the emerging processes of Forward Osmosis and Pressure-Retarded Osmosis. They use ultrathin and dense membranes supported mechanically by much thicker porous layers. Until now, these processes have been modelled by assuming the membrane to be ideally-semipermeable. We show theoretically that allowing for even minor deviations from ideal semipermeability to solvent can give rise to a previously overlooked mode of “breakthrough” osmosis. Here the rate of osmosis is very large (compared to the conventional mode) and practically unaffected by the so-called Internal Concentration Polarization. In Pressure-Retarded Osmosis, the power densities can easily exceed the conventional mode by one order of magnitude. Much more robust support layers can be used, which is an important technical advantage (reduced membrane damage) in Pressure-Retarded Osmosis. PMID:28332607

Multiclass Reduced-Set Support Vector Machines

NASA Technical Reports Server (NTRS)

Tang, Benyang; Mazzoni, Dominic

2006-01-01

There are well-established methods for reducing the number of support vectors in a trained binary support vector machine, often with minimal impact on accuracy. We show how reduced-set methods can be applied to multiclass SVMs made up of several binary SVMs, with significantly better results than reducing each binary SVM independently. Our approach is based on Burges' approach that constructs each reduced-set vector as the pre-image of a vector in kernel space, but we extend this by recomputing the SVM weights and bias optimally using the original SVM objective function. This leads to greater accuracy for a binary reduced-set SVM, and also allows vectors to be 'shared' between multiple binary SVMs for greater multiclass accuracy with fewer reduced-set vectors. We also propose computing pre-images using differential evolution, which we have found to be more robust than gradient descent alone. We show experimental results on a variety of problems and find that this new approach is consistently better than previous multiclass reduced-set methods, sometimes with a dramatic difference.

Scaling rules for the final decline to extinction

PubMed Central

Griffen, Blaine D.; Drake, John M.

2009-01-01

Space–time scaling rules are ubiquitous in ecological phenomena. Current theory postulates three scaling rules that describe the duration of a population's final decline to extinction, although these predictions have not previously been empirically confirmed. We examine these scaling rules across a broader set of conditions, including a wide range of density-dependent patterns in the underlying population dynamics. We then report on tests of these predictions from experiments using the cladoceran Daphnia magna as a model. Our results support two predictions that: (i) the duration of population persistence is much greater than the duration of the final decline to extinction and (ii) the duration of the final decline to extinction increases with the logarithm of the population's estimated carrying capacity. However, our results do not support a third prediction that the duration of the final decline scales inversely with population growth rate. These findings not only support the current standard theory of population extinction but also introduce new empirical anomalies awaiting a theoretical explanation. PMID:19141422

Leadership issues with multicultural crews on the international space station: Lessons learned from Shuttle/Mir

NASA Astrophysics Data System (ADS)

Kanas, Nick; Ritsher, Jennifer

2005-05-01

In isolated and confined environments, two important leadership roles have been identified: the task/instrumental role (which focuses on work goals and operational needs), and the supportive/expressive role (which focuses on morale goals and emotional needs). On the International Space Station, the mission commander should be familiar with both of these aspects of leadership. In previous research involving a 135-day Mir space station simulation in Moscow and a series of on-orbit Mir space station missions during the Shuttle/Mir program, both these leadership roles were studied. In new analyses of the Shuttle/Mir data, we found that for crewmembers, the supportive role of the commander (but not the task role) related positively with crew cohesion. For mission control personnel on the ground, both the task and supportive roles of their leader were related positively to mission control cohesion. The implications of these findings are discussed in terms of leadership on board the International Space Station.

Leadership issues with multicultural crews on the international space station: lessons learned from Shuttle/Mir.

PubMed

Kanas, Nick; Ritsher, Jennifer

2005-01-01

In isolated and confined environments, two important leadership roles have been identified: the task/instrumental role (which focuses on work goals and operational needs), and the supportive/expressive role (which focuses on morale goals and emotional needs). On the International Space Station, the mission commander should be familiar with both of these aspects of leadership. In previous research involving a 135-day Mir space station simulation in Moscow and a series of on-orbit Mir space station missions during the Shuttle/Mir program, both these leadership roles were studied. In new analyses of the Shuttle/Mir data, we found that for crewmembers, the supportive role of the commander (but not the task role) related positively with crew cohesion. For mission control personnel on the ground, both the task and supportive roles of their leader were related positively to mission control cohesion. The implications of these findings are discussed in terms of leadership on board the International Space Station. c2005 Elsevier Ltd. All rights reserved.

The psychosocial impact of Hurricane Katrina: contextual differences in psychological symptoms, social support, and discrimination.

PubMed

Weems, Carl F; Watts, Sarah E; Marsee, Monica A; Taylor, Leslie K; Costa, Natalie M; Cannon, Melinda F; Carrion, Victor G; Pina, Armando A

2007-10-01

This study tested a contextual model of disaster reaction by examining regional differences in the psychosocial impact of Hurricane Katrina. A total of 386 individuals participated in this study. All were recruited in the primary areas affected by Hurricane Katrina and included residents of metropolitan New Orleans (Orleans Parish, Louisiana), Greater New Orleans (i.e., Metairie, Kenner, Gretna), and the Mississippi Gulf Coast (i.e., cities along the coast from Waveland to Ocean Springs, Mississippi). Participants were assessed for posttraumatic stress disorder (PTSD) symptoms, other psychological symptoms, perceptions of discrimination, perceptions of social support, evacuation distance, and the extent to which they experienced hurricane-related stressful events. Results were consistent with previous research on the impact of disasters on mental health symptoms. Findings extended research on individual differences in the response to trauma and indicated that regional context predicted unique variance in the experience of discrimination, social support, and emotional symptoms consistent with the theoretical model presented.

School performance after experiencing trauma: a longitudinal study of school functioning in survivors of the Utøya shootings in 2011

PubMed Central

Strøm, Ida Frugård; Schultz, Jon-Håkon; Wentzel-Larsen, Tore; Dyb, Grete

2016-01-01

Background The psychological impact on survivors of terrorism has been well documented. However, studies on adolescent survivors and the academic performance of high school students following a terrorist attack are lacking. Objective This study investigated academic performance, absenteeism, and school support amongst survivors of a terrorist attack in Norway. Method Data from a longitudinal interview study were linked to officially registered grades of students (N=64) who successfully completed their 3-year senior high school program. Statistical tests of mean differences and linear regression were used to compare the survivors’ registered grades with the national grade point average, before and after the event, as well as to assess absenteeism, self-reported grades and to test the association with school support. Results The students’ grades were lower the year after the event than they had been the year before, and they were also lower than the national grade point average (p<0.001). However, their grades improved in the last year of high school, indicating possible recovery. Absence from school increased after the event, compared to the previous year. However, students reported high satisfaction with school support. Conclusion The results indicate that academic functioning was reduced in the year after the traumatic event, but for students who successfully completed high school, the school situation improved 2 years after the event. The findings underscore the importance of keeping trauma-exposed students in school and providing support over time. A more defined educational approach to maintaining school attendance and educational measures which compensate for learning loss are needed in trauma-sensitive teaching. Highlights of the article School functioning among high school students following a terrorist attack. The findings showed a decline in school performance and increased absence after the event. For students who successfully completed high school, high satisfaction with school support was reported and an improvement in grades could be observed over time, indicating possible recovery. The findings underscore the importance of keeping trauma-exposed students in schools and providing support over time. PMID:27171613

Social Support in Older Individuals: The Role of the BDNF Val66Met Polymorphism

PubMed Central

Taylor, Warren D.; Züchner, Stephan; McQuoid, Douglas R.; Steffens, David C.; Blazer, Dan G.; Krishnan, K. Ranga R.

2008-01-01

Although often viewed as a purely environmental construct, perception of social support may be influenced by genetic factors. This study examined the relationship between the brain-derived neurotrophic factor (BDNF) Val66Met polymorphism and social support measures in older subjects. The sample consisted of 243 depressed and 115 nondepressed older subjects, age 60 years or older; 233 were Val66 allele homozygotes, while 125 were Met66 allele carriers. All subjects completed clinical assessments, including a self-report questionnaire assessing four social support domains, and provided blood for genotyping. Statistical models examined the relationship between scale scores of social support and BDNF Val66Met genotype, while controlling for presence or absence of major depressive disorder and other demographic factors significantly associated with social support. As social support measures were not normally distributed, log-transformed scores were examined. After controlling for diagnosis and education level, the Met66 allele was associated with lower levels of subjective social support (F1, 357 = 5.33, p = 0.0216) and a trend for fewer social interactions (F1, 357 = 3.66, p = 0.0567). To our knowledge, this is the first report associating a measure of social support with a genetic polymorphism. This supports previous work that genetic factors may influence social support perception. Further work is needed to determine the generalizability of this finding to the broader population, as well as its significance for clinical outcomes. PMID:18384075

Agrobacterium tumefaciens supports DNA replication of diverse geminivirus types.

PubMed

Selth, Luke A; Randles, John W; Rezaian, M Ali

2002-04-10

We have previously shown that the soil-borne plant pathogen Agrobacterium tumefaciens supports the replication of tomato leaf curl geminivirus (Australian isolate) (TLCV) DNA. However, the reproducibility of this observation with other geminiviruses has been questioned. Here, we show that replicative DNA forms of three other geminiviruses also accumulate at varying levels in Agrobacterium. Geminiviral DNA constructs that lacked the ability to replicate in Agrobacterium were rendered replication-competent by changing their configuration so that two copies of the viral ori were present. Furthermore, we report that low-level replication of TLCV DNA can occur in Escherichia coli containing a dimeric TLCV construct in a high copy number plasmid. These findings were reinforced by expression studies using beta-glucuronidase which revealed that all six TLCV promoters are active in Agrobacterium, and two are functional in E. coli.

Young Children Detect and Avoid Logically Inconsistent Sources: The Importance of Communicative Context and Executive Function

PubMed Central

Doebel, Sabine; Rowell, Shaina F.; Koenig, Melissa A.

2016-01-01

The reported research tested the hypothesis that young children detect logical inconsistency in communicative contexts that support the evaluation of speakers’ epistemic reliability. In two experiments (N = 194), 3- to 5-year-olds were presented with two speakers who expressed logically consistent or inconsistent claims. Three-year-olds failed to detect inconsistencies (Experiment 1), 4-year-olds detected inconsistencies when expressed by human speakers but not when read from books, and 5-year-olds detected inconsistencies in both contexts (Experiment 2). In both experiments, children demonstrated skepticism toward testimony from previously inconsistent sources. Executive function and working memory each predicted inconsistency detection. These findings indicate logical inconsistency understanding emerges in early childhood, is supported by social and domain general cognitive skills, and plays a role in adaptive learning from testimony. PMID:27317511

Gender, Sexual Orientation, and Rape Myth Acceptance: Preliminary Findings From a Sample of Primarily LGBQ-Identified Survey Respondents.

PubMed

Schulze, Corina; Koon-Magnin, Sarah

2017-02-01

This study is among the first to examine the relationship between sexual orientation and rape myth adherence using a nationwide survey of primarily lesbian, gay, bisexual, and queer (LGBQ) respondents (n = 184). The more established Illinois Rape Myth Acceptance Scale and a modified Male Rape Survey serve as the primary instruments to test both rape myth adherence and instrument-appropriateness. Results suggest that respondents were most likely to support myths that discredit sexual assault allegations or excuse rape as a biological imperative and least likely to support myths related to physical resistance. Consistent with previous work, men exhibited higher levels of rape myth adherence than women. Regarding sexual orientation, respondents who identified as queer consistently exhibited lower levels of rape myth adherence than respondents who identified as gay.

Extracting Spectroscopic Factors of Argon Isotopes from Transfer Reactions

NASA Astrophysics Data System (ADS)

Manfredi, Juan; Lee, J.; Tsang, M. B.; Lynch, W. G.; Barney, J.; Estee, J.; Sweany, S.; Brown, K. W.; Cerizza, G.; Anderson, C.; Setiawan, H.; Loelius, C.; Xu, Z.; Rogers, A. M.; Pruitt, C.; Sobotka, L. G.; Elson, J. M.; Langer, C.; Chajecki, Z.; Chen, G.; Jones, K. L.; Smith, K.; Xiao, Z.; Li, Z.; Winkelbauer, J. R.

2017-01-01

A spectroscopic factor (SF) quantifies the single particle occupancy of a given state in a nucleus. For the argon isotopes, there is a discrepancy of the SF between studies that use transfer reactions and knockout reactions. Understanding the SFs of these isotopes, and in particular how the SF changes across the isotopic chain, is important for understanding how single particle structure changes with neutron number. The transfer reactions 34Ar(p,d) and 46Ar(p,d) were measured at the National Superconducting Cyclotron Laboratory (NSCL) using the same beam energy (70 MeV/u) as from the previous knockout measurement. Spectroscopic factors were extracted from measured angular distributions via ADWA calculations. Preliminary findings will be presented. The National Superconducting Cyclotron Laboratory is supported by the NSF (PHY 1102511), and Juan Manfredi is supported by the DOE NNSA Stewardship Science Graduate Fellowship.

Transmission and reassortment of avian influenza viruses at the Asian-North American interface.

PubMed

Ramey, Andrew M; Pearce, John M; Ely, Craig R; Guy, Lisa M Sheffield; Irons, David B; Derksen, Dirk V; Ip, Hon S

2010-10-25

Twenty avian influenza viruses were isolated from seven wild migratory bird species sampled at St. Lawrence Island, Alaska. We tested predictions based on previous phylogenetic analyses of avian influenza viruses that support spatially dependent trans-hemispheric gene flow and frequent interspecies transmission at a location situated at the Asian-North American interface. Through the application of phylogenetic and genotypic approaches, our data support functional dilution by distance of trans-hemispheric reassortants and interspecific virus transmission. Our study confirms infection of divergent avian taxa with nearly identical avian influenza strains in the wild. Findings also suggest that H16N3 viruses may contain gene segments with unique phylogenetic positions and that further investigation of how host specificity may impact transmission of H13 and H16 viruses is warranted. Copyright © 2010. Published by Elsevier Inc.

Perceived Physical Availability of Alcohol at Work and Workplace Alcohol Use and Impairment: Testing a Structural Model

PubMed Central

Frone, Michael R.; Trinidad, Jonathan R.

2014-01-01

This study develops and tests a new conceptual model of perceived physical availability of alcohol at work that provides unique insight into three dimensions of workplace physical availability of alcohol and their direct and indirect relations to workplace alcohol use and impairment. Data were obtained from a national probability sample of 2,727 U.S. workers. The results support the proposed conceptual model and provide empirical support for a positive relation of perceived physical availability of alcohol at work to workplace alcohol use and two dimensions of workplace impairment (workplace intoxication and workplace hangover). Ultimately, the findings suggest that perceived physical availability of alcohol at work is a risk factor for alcohol use and impairment during the workday, and that this relation is more complex than previously hypothesized. PMID:25243831

Early morphogenesis of persistent hyperplastic tunica vasculosa lentis and primary vitreous (PHTVL/PHPV). Scanning electron microscopic observations.

PubMed

Boevé, M H; Vrensen, G F; Willekens, B L; Stades, F C; van der Linde-Sipman, J S

1993-01-01

This study provides scanning electron microscopic observations on the early morphogenesis of persistent hyperplastic tunica vasculosa lentis and primary vitreous (PHTVL/PHPV) in canine fetuses at days 28 35 postcoitum (D28 and D35). From previous studies regarding PHTVL/PHPV it is known that a retrolental plaque of fibrovascular tissue is present in eyes of affected canine fetuses from the D33 stage. The contribution of vitreous cells to the formation of the plaque is supported by the results of this study. The lens capsules at the stages described were not found to contain abnormalities such as transparent (thinner) parts or rents, as have been described for postnatal cases of PHTVL/PHPV. These findings support the hypothesis that the capsular anomalies observed in postnatal patients are secondary entities.

Longitudinal pathways between mental health difficulties and academic performance during middle childhood and early adolescence.

PubMed

Deighton, Jessica; Humphrey, Neil; Belsky, Jay; Boehnke, Jan; Vostanis, Panos; Patalay, Praveetha

2018-03-01

There is a growing appreciation that child functioning in different domains, levels, or systems are interrelated over time. Here, we investigate links between internalizing symptoms, externalizing problems, and academic attainment during middle childhood and early adolescence, drawing on two large data sets (child: mean age 8.7 at enrolment, n = 5,878; adolescent: mean age 11.7, n = 6,388). Using a 2-year cross-lag design, we test three hypotheses - adjustment erosion, academic incompetence, and shared risk - while also examining the moderating influence of gender. Multilevel structural equation models provided consistent evidence of the deleterious effect of externalizing problems on later academic achievement in both cohorts, supporting the adjustment-erosion hypothesis. Evidence supporting the academic-incompetence hypothesis was restricted to the middle childhood cohort, revealing links between early academic failure and later internalizing symptoms. In both cohorts, inclusion of shared-risk variables improved model fit and rendered some previously established cross-lag pathways non-significant. Implications of these findings are discussed, and study strengths and limitations noted. Statement of contribution What is already known on this subject? Longitudinal research and in particular developmental cascades literature make the case for weaker associations between internalizing symptoms and academic performance than between externalizing problems and academic performance. Findings vary in terms of the magnitude and inferred direction of effects. Inconsistencies may be explained by different age ranges, prevalence of small-to-modest sample sizes, and large time lags between measurement points. Gender differences remain underexamined. What does this study add? The present study used cross-lagged models to examine longitudinal associations in age groups (middle child and adolescence) in a large-scale British sample. The large sample size not only allows for improvements on previous measurement models (e.g., allowing the analysis to account for nesting, and estimation of latent variables) but also allows for examination of gender differences. The findings clarify the role of shared-risk factors in accounting for associations between internalizing, externalizing, and academic performance, by demonstrating that shared-risk factors do not fully account for relationships between internalizing, externalizing, and academic achievement. Specifically, some pathways between mental health and academic attainment consistently remain, even after shared-risk variables have been accounted for. Findings also present consistent support for the potential impact of behavioural problems on children's academic attainment. The negative relationship between low academic attainment and subsequent internalizing symptoms for younger children is also noteworthy. © 2017 The British Psychological Society.

Conditional dissociation as a punishment mechanism in the evolution of cooperation

NASA Astrophysics Data System (ADS)

Qu, Xinglong; Zhou, Changli; Cao, Zhigang; Yang, Xiaoguang

2016-05-01

Recent studies show that conditional dissociation, a.k.a. post-interaction partner-refusal, can promote the emergence and stability of cooperation. However, in most of these studies, players' strategies are restricted to pure ones, which is obviously inconsistent with many biological and economic situations. Another concern with line of these studies is that conditional dissociation is often combined with other mechanisms. These mechanisms may favor cooperation per se, leaving it unclear whether conditional dissociation is indeed a key factor. In this paper, we study a clean model, pruning all the factors other than conditional dissociation that may favor cooperation. We find that conditional dissociation, which could be viewed as a variant of peer punishment, does promote cooperation, no matter whether mixed strategies are allowed or not. This confirms the previous findings in the literature. In addition, compared with the pure strategy scenario, cooperators are less competitive when mixed strategies are allowed. Our main finding is supported by both the numerical simulations and the theoretical analysis of Neutrally Stable Strategy. We also find that cooperative behavior is favored when waiting time and/or the population's lifespan are longer.