This study examined how aggregate levels of news coverage about marijuana have impacted adolescents' marijuana behavior generally, and through the intervening variables of personal disapproval and perceived harmfulness of marijuana, two variables that existing research has identified as significant predictors of ...

Despite evidence showing that readiness to change substance use predicts reductions in substance use among treated adolescents, there is little research on changes in thoughts about abstinence and marijuana use during and after treatment. The current study tested whether time-varying changes in adolescents' ...

Some neurocognitive recovery occurs within a month of abstinence from heavy marijuana use, yet functional magnetic resonance imaging (fMRI) has revealed altered activation among recent and abstinent adult users. Here, we compared fMRI response during a spatial working memory (SWM) task between adolescent ...

Some neurocognitive recovery occurs within a month of abstinence from heavy marijuana use, yet functional magnetic resonance imaging (fMRI) has revealed altered activation among recent and abstinent adult users. We compared fMRI response during a spatial working memory (SWM) task between adolescent ...

Despite some evidence showing that readiness to change substance use predicts reductions in substance use among treated adolescents, there is little research on month-to-month changes in adolescents� thoughts about abstinence and marijuana use during and after substance use treatment. The current study provides a ...

A statewide treatment outcomes monitoring system included baseline interviews with 387 adolescents and 363 parents representing 37 programs. This study examined adolescent and parent predictors of treatment completion and 6-month outcomes. Only 21.4% of the adolescents reported abstinence for the 6 months following ...

BackgroundMarijuana intoxication appears to impair response inhibition, but it is unclear if impaired inhibition and associated brain abnormalities persist after prolonged abstinence among adolescent users. We hypothesized that brain activation during a go/no-go task would show persistent abnormalities in ...

An initial efficacy test of an innovative behavioral outpatient treatment model for adolescents with problematic use of marijuana enrolled 69 adolescents, aged 14-18, and randomly assigned them to one of two treatment conditions. Both conditions received individualized Motivational Enhancement and Cognitive Behavioral Therapy (MET/CBT) ...

An initial efficacy test of an innovative behavioral outpatient treatment model for adolescents with problematic use of marijuana enrolled 69 adolescents, aged 14�18, and randomly assigned them to one of two treatment conditions. Both conditions received individualized Motivational Enhancement and Cognitive Behavioral Therapy ...

Nearly half of 12^th graders have tried marijuana, and 6% use daily. This paper reviews studies on neuropsychological functioning, brain structure, brain function, and subjective and objective measures of sleep in relation to adolescent marijuana use. Adolescents who use ...

BackgroundFunctional neuroimaging data from adults have, in general, found frontocerebellar dysfunction associated with acute and chronic marijuana (MJ) use (Loeber & Yurgelun-Todd, 1999). One structural neuroimaging study found reduced cerebellar vermis volume in young adult MJ users with a history of heavy polysubstance use (Aasly et al., 1993). The goal of this study ...

Adolescent, Marijuana Abusers and Their Families U. S. DEPARTMENT OF HEALTH AND HUMAN SERVICES � Public Health Service � Alcohol, Drug Abuse, and Mental Health Administration #12;Adolescent Marijuana Abstracts. #12;ACKNOWLEDGMENTS This study of the lives of adolescent ...

Adolescent developments in limbic structures and the endogenous cannabinoid system suggest that teenagers may be more vulnerable to the negative consequences of marijuana use. This study examined the relationships between amygdala volume and internalizing symptoms in teenaged chronic marijuana users. Participants were 35 ...

Background: Depressed mood has been associated with decreased white matter and reduced hippocampal volumes. However, the relationship between brain structure and mood may be unique among adolescents who use marijuana heavily. The goal of this study was to examine the relationship between white matter and hippocampal volumes and depressive symptoms among ...

Drug abuse treatment programs typically recommend complete abstinence because of a fear that clients who stop use of one drug will substitute another. A within-subjects study investigated whether consumption of alcohol and other substances changes during marijuana abstinence. Twenty-eight daily marijuana users who ...

IntroductionAdult human studies suggest frontal dysfunction associated with chronic marijuana (MJ) use, but due to continued neuromaturation, adult studies may not generalize to adolescents. This study characterized prefrontal cortex (PFC) morphometry in chronic MJ-using adolescents following one month of monitored ...

We present the case of a young adult in treatment for marijuana dependence, with recurrent depression and a history of possible TBI, complaining of concentration, memory and initiation problems. Testing at treatment baseline revealed performance that was generally in the High Average range on measures of reaction time and attention, with a selective impairment in verbal ...

Alcohol and marijuana use are prevalent in adolescence, yet the neural impact of concomitant use remains unclear. We previously demonstrated functional magnetic resonance imaging (fMRI) response to spatial working memory (SWM) among teens with alcohol use disorders (AUD) compared to controls, and predicted that adolescents with ...

ObjectiveMarijuana abuse is associated with neurological changes including increases in frontal EEG alpha during abstinence. Research is needed to assess to what extent these EEG patterns are indicative of cerebral perfusion deficits.MethodsWe recorded the resting eyes closed EEG of 75 abstinent marijuana users and ...

Randomly assigned adults (n=212) seeking treatment for marijuana use to relapse prevention (RP) or social support (SSP) group discussion intervention. Data collected at 12 months posttreatment revealed substantial reductions in frequency of marijuana use and associated problems; no significant difference between treatments on days of ...

Monitoring data on adolescents marijuana use and their perceptions of risk in using it is vital for making decisions about implementing and targeting prevention programs. The National Survey on Drug Use and Health (NSDUH) includes questions on marijuana u...

... or occur because of depression: Heavy drinking Regular marijuana (pot) smoking ... Risks of suicide or homicide -- whether the teen is ...