Male and female opioid-dependent patients at Addiction Treatment Services with any current psychiatric disorder (N = 100) will be randomly assigned to one of two psychiatric service conditions: 1) reinforced on-site integrated care (ROIC), with voucher incentives contingent on attending weekly psychiatric sessions; or 2) standard on-site integrated care (SOIC). Participants in both conditions will receive access to the same schedule and range of psychiatric and substance abuse treatment services. Participants will be assessed for 3-months post-randomization to determine rates of service utilization and adherence to psychiatric care, changes in scope and severity of psychiatric and psychosocial problems, and rates of drug use and treatment retention. Positive findings would have considerable heuristic and health care policy and practice implications. The entire study, including dissemination of the major findings at a national meeting and submission of the first manuscript, is designed to be completed within 2-years.
