EFFECT OF REINFORCEMENT PROBABILITY AND PRIZE SIZE ON COCAINE AND HEROIN ABSTINENCE IN PRIZE‐BASED CONTINGENCY MANAGEMENT | Zendy

Ghitza Udi E. | Zendy; Epstein David H. | Zendy; Schmittner John | Zendy; Vahabzadeh Massoud | Zendy; Lin JiaLing | Zendy; Preston Kenzie L. | Zendy

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EFFECT OF REINFORCEMENT PROBABILITY AND PRIZE SIZE ON COCAINE AND HEROIN ABSTINENCE IN PRIZE‐BASED CONTINGENCY MANAGEMENT

Author(s) -

Ghitza Udi E.,

Epstein David H.,

Schmittner John,

Vahabzadeh Massoud,

Lin JiaLing,

Preston Kenzie L.

Publication year - 2008

Publication title -

journal of applied behavior analysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.1

H-Index - 76

eISSN - 1938-3703

pISSN - 0021-8855

DOI - 10.1901/jaba.2008.41-539

Subject(s) - contingency management , abstinence , reinforcement , psychology , heroin , methadone , methadone maintenance , contingency , heroin dependence , outcome (game theory) , psychiatry , randomized controlled trial , clinical psychology , medicine , social psychology , drug , mathematics , linguistics , philosophy , mathematical economics , intervention (counseling)

Although treatment outcome in prize‐based contingency management has been shown to depend on reinforcement schedule, the optimal schedule is still unknown. Therefore, we conducted a retrospective analysis of data from a randomized clinical trial (Ghitza et al., 2007) to determine the effects of the probability of winning a prize (low vs. high) and the size of the prize won (small, large, or jumbo) on likelihood of abstinence until the next urine‐collection day for heroin and cocaine users ( N = 116) in methadone maintenance. Higher probability of winning, but not the size of individual prizes, was associated with a greater percentage of cocaine‐negative, but not opiate‐negative, urines.

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