Citation

Klapproth F. Behav. Processes 2012; 90(3): 420-423.

Affiliation

University of Luxembourg, Route de Diekirch, 7201 Walfderdange, Luxembourg.

Copyright

(Copyright © 2012, Elsevier Publishing)

DOI

10.1016/j.beproc.2012.03.013

PMID

22709578

Abstract

In the present study, individuals with substance use disorders (n=30) and non-addicted controls (n=30) were presented with a delay-discounting task with time being described either as dates or as temporal intervals. Three main results were obtained. First, in both groups reward size had a large impact on discounting future rewards, with discount rates becoming larger with smaller reward sizes. Second, participants discounted future rewards less strongly when their time of delivery was presented as a date instead of a temporal distance. Third, whereas discount rates of individuals with substance use disorders varied substantially with regard to the presentation of time in the task, the controls changed their choices depending on time presentation only slightly.

Language: en