Contingency management for the treatment of methamphetamine use disorders.

Theory and some preliminary evidence suggest that contingency management may be an effective treatment strategy or adjunct to psychosocial treatment for methamphetamine use disorders. This study examined a subset of data gathered as part of protocol CTN-0006 (“Motivational Incentives for Enhanced Drug Abuse Recovery: Drug Free Clinics”), involving 113 participants who were diagnosed with methamphetamine abuse or dependence. During the protocol, these participants were randomly assigned to receive 12 weeks of either treatment as usual or treatment as usual plus contingency management. Urine samples were tested for illicit drugs, and breath samples were tested for alcohol. The reinforcers for drug-negative samples were plastic chips, some of which could be exchanged for prizes. The number of plastic chips drawn increased with each week of negative samples, but was reset to one after a missed or positive sample.

The participants in both groups remained in treatment for equivalent times, but those receiving contingency management in addition to usual treatment submitted substantially more negative samples, and they were abstinent for a longer period of time (5 versus 3 weeks). These results suggest that contingency management has promise as a component in treatment strategies for methamphetamine use disorder.

Related protocols: CTN-0006