Impact of role induction on long-term drug treatment outcomes.

In prior research, Katz et al. found that role induction (RI) improved engagement for substance dependent clients relative to standard outpatient treatment orientation. The current study replicates and extends these findings to an examination of long-term outcomes. Substance dependent clients entering outpatient drug-free treatment (N = 353) were randomly assigned to RI or to Standard (ST) orientation followed by routine clinic treatment. Measures of employment, crime, and substance use were collected at intake and at six- and 12-months post-intake. Controlling for baseline differences in substance use, results partially replicated our earlier findings of better engagement for RI, as compared to ST participants; more RI than ST participants attended at least one post-orientation counselling session. RI improved 12-month substance use outcome relative to ST. The potential gain in retention and in reduced substance use at follow-up associated with a single RI session, recommend this strategy for further development and study.

Evaluation of a group-based substance abuse treatment program for adolescents.

The effectiveness of adolescent substance abuse treatment has been repeatedly demonstrated, but specific treatment approaches have rarely been sufficiently documented to permit replication. This study evaluated the effectiveness of a manual-guided, outpatient, group-based treatment program for adolescents (N = 194) who were mild-to-moderate substance abusers. In addition to evaluating the group-based treatment model, the study was designed to compare the effectiveness of two approaches to preparing youth to engage in treatment, whereby adolescents received one of two types of treatment induction, either motivational interviewing or counseling overview. Self-reported pretreatment substance use and criminal behaviors were compared with these behaviors 6 and 12 months following treatment entry using a General Linear Mixed Model analytic approach that controlled for the effects of potential confounding variables and examined individual and program factors that might explain treatment response. Participants significantly reduced marijuana use at 6 months, and these reductions were largely sustained at 12 months. No changes in alcohol use or criminal involvement were obtained. Further examination of marijuana use indicated differential treatment response based on participants' emotional abuse history, family satisfaction, school adjustment, and pretreatment substance use frequency. This treatment approach appears promising for marijuana-abusing youth.