Schedule of voucher delivery influences initiation of cocaine abstinence.

• DOI: 10.1037/0022-006x.66.5.761
• Publication Date: 2005-09-22T19:33:31Z
• Authors: Kimberly C. Kirby; Douglas B. Marlowe; David S. Festinger; R. J. Lamb; Jerome J. Platt
• Keywords: Voucher; Contingency management

This study examined whether voucher delivery arrangements affect treatment outcome. First, 90 cocaine-dependent adults were randomly assigned to behavioral counseling or plus vouchers for cocaine-free urine samples. The value of each was low at the beginning but increased as patient progressed (Voucher Schedule 1). Voucher 1 produced no improvements relative only. Next, 23 patients received on either 2. 2 began with high values, requirements earning progressed. Average durations cocaine abstinence 6.9 weeks versus 2.0 (p = .02). confirms that can assist in initiating and are critical.