Impulsivity and Rapid Discounting of Delayed Hypothetical Rewards in Cocaine-Dependent Individuals

In this study, crack/cocaine-dependent (CD) and non-drug-using matched control (MC) participants were presented with hypothetical immediate and delayed rewards, with 16 delay conditions ranging from 5 min to 25 years. All participants were presented with hypothetical monetary rewards; however, the C...

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Bibliographic Details
Published in:Experimental and clinical psychopharmacology 2003-02, Vol.11 (1), p.18-25
Main Authors: Coffey, Scott F, Gudleski, Gregory D, Saladin, Michael E, Brady, Kathleen T
Format: Article
Language:English
Subjects:
Adult
Cocaine
Cocaine-Related Disorders - psychology
Delay of Gratification
Drug Dependency
Female
Human
Humans
Impulsive Behavior - psychology
Impulsiveness
Intelligence Tests
Male
Motivation
Psychiatric Status Rating Scales
Reward
Rewards
Surveys and Questionnaires
Time Factors
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Summary:In this study, crack/cocaine-dependent (CD) and non-drug-using matched control (MC) participants were presented with hypothetical immediate and delayed rewards, with 16 delay conditions ranging from 5 min to 25 years. All participants were presented with hypothetical monetary rewards; however, the CD group was also presented with hypothetical crack/cocaine rewards. The objective value of the rewards ranged from $1 to $1,000. Hyperbolic discounting functions provided a good fit of the data. The CD group discounted monetary rewards at a higher rate than the MC group did, and the CD group discounted crack/cocaine rewards at a higher rate than it did monetary rewards. Moreover, scores on self-report measures indicated greater impulsivity in the CD group when compared with the MC group.
ISSN:1064-1297
1936-2293
DOI:10.1037/1064-1297.11.1.18