Do you want to find the latest evidence concerning mental ill-health in young people?
The Evidence Finder tool allows you to search published studies of treatment and prevention strategies for mental health and substance use issues in young people. You can use the filters to refine your search or browse by category.
Disorders - cannabis use
Ginsburg, Harvey J., Czyzewska, Maria
The effectiveness of national media campaigns aimed at reducing the prevalence of tobacco and marijuana use among youth was investigated. We hypothesized that since recent self-reported tobacco use has declined substantially more than marijuana, anti-tobacco television ads would produce higher favorable to unfavorable ratios of immediate post-viewing written comments about the ads or the targeted substance. A double-blind experiment comparing the effectiveness of four televised anti-marijuana and anti-tobacco ads ANOVA revealed significant interactions between type of ads and type of written comments. Co-varied pre-test substance attitude measures of 123 participants produced similar ANCOVA results. Immediate viewer reactions to the ads may be one mechanism for Hornik et. al.'s (2003, 2004) boomerang outcomes for latest national anti-marijuana ad campaign. Substance prevention ads may reflect more than cause public perceptions of tobacco and marijuana. Results did not support ads' success claimed by Office of National Drug Control (ONDCP). (PsycINFO Database Record (c) 2007 APA, all rights reserved) (journal abstract).
North American Journal of Psychology, 7(3) : 367-377
- Year: 2005
- Problem: Cannabis Use
- Type: Randomised controlled trials
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Stage: Universal prevention
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Treatment and intervention: Psychological Interventions (any)
, Other Psychological Interventions
Brown, Eric C., Catalano, Richard F., Fleming, Charles B., Haggerty, Kevin P., Abbott, Robert D.
Raising Healthy Children (RHC) is a preventive intervention designed to promote positive youth development by targeting developmentally appropriate risk and protective factors. In this study, the authors tested the efficacy of the RHC intervention on reducing adolescent alcohol, marijuana, and cigarette use. Ten public schools, which comprised 959 1st- and 2nd-grade students (54% male students, 18% minority, 28% low socioeconomic status), were matched and assigned randomly to either intervention or control conditions. A 2-part latent growth modeling strategy was used to examine change in both use-versus-nonuse and frequency-of-use outcomes while students were in Grades 6-10. Results indicated significant (p < .05) intervention effects in growth trajectories for frequency of alcohol and marijuana use but not for use versus nonuse. These findings provide support for preventive interventions that take a social development perspective in targeting empirically supported risk and protective factors and demonstrate the use of 2-part models in adolescent substance use research. Copyright 2005 APA, all rights reserved.
Journal of Consulting & Clinical Psychology, 73(4) : 699-710
- Year: 2005
- Problem: Alcohol Use, Cannabis Use
- Type: Randomised controlled trials
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Stage: Universal prevention
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Treatment and intervention: Psychological Interventions (any)
, Other Psychological Interventions
Bond, Lyndal, Thomas, Lyndal, Coffey, Carolyn, Glover, Sara, Butler, Helen, Carlin, John B., Patton, George
This study examined the impact of a school-based preventive intervention on cannabis use in adolescence, using a cluster-randomized trial of a multilevel intervention aimed at improving social relationships within schools by promoting change in school environment. Four waves of data were collected at baseline (1997, Year 8: mean age 13 years) and six, 18, and 30 months later (1999, Year 10: mean age 16 years). Self-reported substance use, school engagement, and sociodemographic data were collected using computer-administered questionnaires. Some 2.678(74%) Year 8 students participated (wave 1) with minimal attrition (10% by wave 4). Adjusting for baseline use, weak evidence existed for an intervention effect on the prevalence of any use at Year 10 (OR 0.75, 95% CI 0.54, 1.05) and incident weekly use (OR 0.72, 95% CI 0.39, 1.33). These effects were reduced after adjusting for confounders. Moderate evidence suggested an interaction effect between intervention group and tobacco use (p = 0.04), suggesting the intervention was more effective for non-smokers at baseline (Adj. OR 0.50, 95% CI 0.26, 0.98). This study indicates that a multi-level school-based program may provide an innovative direction for sustainable school interventions with the potential to reduce substance use.
Journal of School Health, 74(1) : 23-9
- Year: 2004
- Problem: Cannabis Use
- Type: Randomised controlled trials
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Stage: Universal prevention
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Treatment and intervention: Psychological Interventions (any)
, Skills training
Sinha, Rajita, Easton, Caroline, Renee-Aubin, Lisa, Carroll, Kathleen M.
Young marijuana abusers rarely seek treatment themselves and are difficult to engage in treatment when referred by social agencies. To evaluate treatment engagement strategies in this population, 65 young probation-referred marijuana abusers were randomly assigned to either three-session motivational enhancement therapy (MET alone) or three-session MET plus contingency management (MET/CM), with vouchers for treatment attendance. A significantly higher number of participants in the MET/CM condition completed the three-session intervention as compared with MET alone. Participants in both conditions reported significant reductions in marijuana use and improvement in legal problems. These findings suggest that young marijuana abusers benefit from scientifically validated treatments.
American Journal on Addictions, 12(4) : 314-23
- Year: 2003
- Problem: Cannabis Use
- Type: Randomised controlled trials
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Stage: Disorder established (diagnosed disorder)
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Treatment and intervention: Psychological Interventions (any)
, Motivational interviewing, includes Motivational Enhancing Therapy, Contingency management
Cuijpers, P., Jonkers, R., De-Weerdt, I., De Jong, A.
Aims: To examine the effects of the 'Healthy School and Drugs' project, a Dutch school-based drug prevention project that was developed in the late 1980s and disseminated during the 1990s. This programme is currently being used by 64-73% of Dutch secondary schools and it is estimated that at least 350 000 high school students receive this intervention each year. Design, setting and participants: A quasi-experimental study in which students of nine experimental (N = 1156) schools were compared with students of three control schools (N = 774). The groups were compared before the intervention, 1 year later, 2 years later and 3 years later. Measurements: Self-report measures of tobacco, alcohol and marijuana use. attitudes towards substance use, knowledge about substances and self-efficacy. Findings: Some effects on the use of tobacco, alcohol and cannabis were found. Two years after the intervention, significant effects could still be shown on alcohol use. Effects of the intervention were also found on knowledge, but there was no clear evidence for any effects on attitude towards substance use and on self-efficacy. Conclusions: This study shows the Healthy School and Drugs project as implemented in Holland may have some effect on drug use in the children exposed to it.
Addiction, 97(1) : 67-73
- Year: 2002
- Problem: Alcohol Use, Cannabis Use
- Type: Controlled clinical trials
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Stage: Universal prevention
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Treatment and intervention: Psychological Interventions (any)
, Psychoeducation, Skills training