School-based prevention practices appear effective in reducing alcohol and drug use, dropout and nonattendance, and other conduct problems, with small average effects and considerable heterogeneity across studies¶

Claim · All claims
Evidence · 1 study (2 entries) · quant-synthesis r? · q3
Currency · newest study 2001 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? School-based prevention practices appear effective in reducing alcohol and drug use, dropout and nonattendance, and other conduct problems. → Wilson 2001 q3 i? The size of the average effect for each of the four outcomes was small, with considerable heterogeneity across studies even within program type after adjusting for measured method and population differences. → Wilson 2001 (2)

Evidence¶

Wilson 2001¶

Wilson, D.B., Gottfredson, D.C. & Najaka, S.S. (2001). School-Based Prevention of Problem Behaviors: A Meta-Analysis. Journal of Quantitative Criminology. https://doi.org/10.1023/A:1011050217296

q3 · i? · quant-synthesis · r?

Meta-analysis of 165 studies of school-based prevention activities. The synthesis reports that practices "appear to be effective in reducing alcohol and drug use, dropout and nonattendance, and other conduct problems." No effect size is printed in the available text.

"The study shows, however, that school-based prevention practices appear to be effective in reducing alcohol and drug use, dropout and nonattendance, and other conduct problems."

Wilson 2001 (2)¶

Wilson, D.B., Gottfredson, D.C. & Najaka, S.S. (2001). School-Based Prevention of Problem Behaviors: A Meta-Analysis. Journal of Quantitative Criminology. https://doi.org/10.1023/A:1011050217296

q3 · i? · quant-synthesis · r?

Meta-analytic synthesis across four outcomes. The article reports the "average effect for each of the four outcomes was small" and heterogeneity persisted "even within program type after adjusting for measured method and population differences." No standardized effect size value is printed.

"The size of the average effect for each of the four outcomes was small and there was considerable heterogeneity across studies in the magnitude of effects, even within program type after adjusting for measured method and population differences."

Discussion¶

Related Claims¶

• Environmentally focused interventions appear to be particularly effective for reducing delinquency and drug use — related
• One study found the intervention effect on conduct problems was stronger for youth at greater risk of developing conduct problems. — related
• Unpublished status and higher method quality are associated with smaller estimated effects of dropout programs — related
• Peer programs, including cooperative learning strategies, were concluded to be the single most effective school-based approach for reducing youth alcohol and drug use — reports the opposite
• Recovery high school attendance may improve absenteeism, abstinence, and reduce marijuana and other drug use, based on a single quasi‐experimental study with serious risk of bias — related
• Recovery high schools were no better or worse than comparison high schools on grade point average, truancy, or alcohol use in the single included study — related
• Mandatory-random student drug testing reduces high school students' reported past-30-day substance use relative to schools without MRSDT — related
• School exclusionary policies paradoxically worsen dropout, delinquency, and achievement — related
• Included intervention studies varied considerably in design, methods, quality and transferability — related