This review analyzed the effectiveness of mandated substance use interventions in reducing future cannabis or other illicit drug use. Findings indicated that early decreases in cannabis and other drug use are commonly reported among students participating in mandated interventions. The longer time elapses post-intervention, the more likely…

Analyzed follow-up data for drug abuse treatment study of residential drug treatment program clients (N=89) enrolled in control group or behavior skills training group. Found training group had higher skills than control group 12 months after training. Found, with exceptions of marijuana and amphetamine use, that skill training did not affect…

This paper uses an integrated model of behavior change to predict intentions to use marijuana occasionally and regularly in a US-based national sample of male and female 12 to 18 year olds (n = 600). The model combines key constructs from the theory of reasoned action and social cognitive theory. The survey was conducted on laptop computers, and…