Predicting Substance Use and Treatment Initiation among Substance Using Probationers

• In Event: Motivational and Technology-Based Approaches to Reducing Substance Use Among Probationers: Results from a Multi-Site RCT

Abstract

Although motivational interviewing (MI) is regarded as an effective technique to address substance use, very few studies have examined how this approach affects substance use or treatment initiation in the criminal justice system. In this paper, we present outcome data from substance using probationers who were randomized to receive a 2-session MI intervention, a 2-session motivational computer intervention (MAPIT), or probation as usual. We present data from 295 probationers who completed baseline and a 2-month follow up. Controlling for adherence to the MI protocol, those who received MI were significantly less likely to report substance use (binge alcohol, marijuana, or hard drugs) at the 2-month follow-up, compared to usual care. Both the MI and MAPIT study arms were less likely to use marijuana at 2 months, compared to usual care. Furthermore, both study arms were more likely to attend some type of treatment during the 60 days following randomization. At 6 months, most of the between group effects had disappeared. Implications for probation intake processes are suggested.

Authors

• Faye S. Taxman, George Mason University

• Scott T. Walters, University of North Texas Health Science Center

• Jennifer Lerch, George Mason University