Effectiveness and Costs of Enhanced Cocaine Treatments

The study will evaluate the effectiveness, economic benefits, and costs of voucher reinforcement for cocaine and alcohol abstinence, additional counseling services, and their combination in a sample of cocaine dependent patients receiving outpatient treatment as usual in a community clinic.

Inclusion Criteria:

• Enrollment in an intensive outpatient program (IOP) for no more than 1 month
• Current DSM-IV diagnosis of cocaine dependence (month prior to IOP treatment)
• 18-65 years of age
• Ability to provide names of informants to help locate subject for follow-up

Exclusion Criteria:

• IV heroin use in last year
• Acute medical/psychiatric diagnosis that precludes outpatient treatment
• Inpatient treatment for 6 weeks or more prior to IOP treatment
• Incarceration for 6 months or more prior to IOP treatment