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J Psychoactive Drugs. 2000 Apr-Jun;32(2):157-64.

The matrix model of outpatient stimulant abuse treatment: history and description.

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  • 1Matrix Institute on Addictions, Los Angeles, California 90025, USA.


The Matrix model was originally developed in response to the cocaine epidemic of the 1980s. The program consists of relapse prevention groups, education groups, social support groups, individual counseling, and urine and breath testing delivered in a structured manner over a 16-week period. The treatment is a directive, nonconfrontational approach which focuses on current issues and behavior change. Several evaluations of the model have supported its usefulness and efficacy with methamphetamine (MA) users. Methamphetamine users appear to respond to treatment similarly to cocaine users and many continue to show improvements at follow-up.

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