Examining the Effectiveness of Vouchers in Changing Behaviors of Drug Court and Prop 36 Clients

Michael L. Prendergast, UCLA Integrated Substance Abuse Programs
John M. Roll, University of California, Los Angeles

Drug Courts make use of close judicial supervision and treatment and a combination of sanctions and incentives to promote desired behavior. Proposition 36 allows convicted nonviolent drug possession offenders, if they choose, to be sentenced to community supervision and treatment instead of either community supervision without treatment or incarceration. Supervision and monitoring are less intensive than in drug courts. At the same treatment program, in two ongoing randomized studies, one with drug court clients and the other with Proposition 36 clients, we are assessing the effectiveness of using well-established contingency management procedures (using vouchers) to reinforce abstinence and compliance with treatment plans. Assessments are conducted at baseline, at the end of treatment, and at 12 months following treatment discharge. Outcome measures include drug use during and after treatment, incarceration during and after treatment, and compliance with program guidelines. The presentation will summarize preliminary data ont he relative effectiveness of vouchers to promote abstinence among these two offender populations subject to different levels of supervision and monitoring.

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Updated 05/20/2006