Volume 24, Issue 4 pp. 657-665
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CONTINGENT REINFORCEMENT OF ABSTINENCE WITH INDIVIDUALS ABUSING COCAINE AND MARIJUANA

Alan J. Budney

Alan J. Budney

UNIVERSITY OF VERMONT

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Stephen T. Higgins

Corresponding Author

Stephen T. Higgins

UNIVERSITY OF VERMONT

Human Behavioral Pharmacology Laboratory, Department of Psychiatry, University of Vermont, 38 Fletcher Place—Ira Allen School, Burlington, Vermont 05401.Search for more papers by this author
Dawn D. Delaney

Dawn D. Delaney

UNIVERSITY OF VERMONT

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Lisa Kent

Lisa Kent

UNIVERSITY OF VERMONT

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Warren K. Bickel

Warren K. Bickel

UNIVERSITY OF VERMONT

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First published: Winter 1991
Citations: 52

Abstract

Two males diagnosed with cocaine dependence received a behavioral intervention comprised of contingency management and the community reinforcement approach. During the initial phase of treatment, reinforcement was delivered contingent on submitting cocaine-free urine specimens. The community reinforcement approach involved two behavior therapy sessions each week. Almost complete cocaine abstinence was achieved, but regular marijuana use continued. During a second phase, reinforcement magnitude was reduced, but remained contingent on submitting cocaine-free specimens. Behavior therapy was reduced to once per week. Cocaine abstinence and regular marijuana use continued. Next, reinforcement was delivered contingent on submitting cocaine- and marijuana-free specimens. This modified contingency resulted in an abrupt increase in marijuana abstinence and maintenance of cocaine abstinence. One- and 5-month follow-ups indicated that cocaine abstinence continued, but marijuana smoking resumed. These results indicate that the behavioral intervention was efficacious in achieving abstinence from cocaine and marijuana; maintenance, however, was achieved for cocaine only.

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