ISSN 2043-8087
Journal of Experimental Psychopathology
 Volume 2, Issue 3, 418-431, 2011
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Delayed Reward Discounting and Alcohol Misuse: The Roles of Response Consistency and Reward Magnitude

Authors
Michael Amlung, M.S. (a), James MacKillop, Ph.D. (b)
(a) University of Georgia
(b) University of Georgia, and Brown University

Volume 2, Issue 3, 2011, Pages 418-431
DOI: http://dx.doi.org/10.5127/jep.017311

Abstract
Delayed reward discounting (DRD) is a common index of impulsivity that refers to an individual's devaluation of rewards based on delay of receipt and has been linked to alcohol misuse and other maladaptive behaviors. The current study investigated response consistency and reward magnitude effects in two measures of DRD in a sample of 111 undergraduates who consumed an average of 10.7 drinks/week. These variables were also examined in relation to alcohol use and misuse. Results indicated highly consistent performance on both measures of DRD, although significant differences were evident based on task parameters. There was also clear evidence of a magnitude effect on DRD. Finally, a number of significant associations between DRD and both alcohol use and misuse were found. These findings suggest that individuals possess a relatively consistent cognitive template for DRD choice preferences, but that the template systematically varies by both reward magnitude and delay length.

Table of Contents
Introduction
Method
  Participants
  Assessment
    Demographics.
    Alcohol use and alcohol-related problems.
    Monetary Choice Questionnaire.
    Delay Discounting Task.
  Data Analysis
Results
  Preliminary Analyses
  Primary Analyses
Discussion
Acknowledgements
References

Correspondence to
Michael Amlung, Department of Psychology, The University of Georgia, Athens, GA 30602, USA.

Keywords
Behavioral Economics, Delay Discounting, Alcohol, Response Consistency, Magnitude Effects

Dates
Received 1 Feb 2011; Revised 30 Mar 2011; Accepted 15 Apr 2011; In Press 24 Jul 2011







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