The Role of Drug Expectancy in the Control of Human Drug Seeking

Hogarth, Lee, Dickinson, Anthony, Wright, Alexander, Kouvaraki, Mariangela and Duka, Theodora (2007) The Role of Drug Expectancy in the Control of Human Drug Seeking. Journal of Experimental Psychology: Animal Behavior Processes, 33 (4). pp. 484-496. ISSN 0097-7403

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Human drug seeking may be goal directed in the sense that it is mediated by a mental representation of the drug or habitual in the sense that it is elicited by drug-paired cues directly. To test these 2 accounts, the authors assessed whether a drug-paired stimulus (S+) would transfer control to an independently trained drug-seeking response. Smokers were trained on an instrumental discrimination that established a tobacco S+ in Experiment 1 and a tobacco and a money S+ in Experiment 2 that elicited an expectancy of their respective outcomes. Participants then learned 2 new instrumental responses, 1 for each outcome, in the absence of these stimuli. Finally, in the transfer test, each S+ was found to augment performance of the new instrumental response that was trained with the same outcome. This outcome-specific transfer effect indicates that drug-paired stimuli controlled human drug seeking via a representation or expectation of the drug rather than through a direct stimulus-response association.

Item Type: Article
Additional Information: Senior author. Hogarth was Duka's research fellow; Wright and Kouvarki were students. Dickinson provided theoretical support.
Schools and Departments: School of Psychology > Psychology
Depositing User: Dora Duka
Date Deposited: 06 Feb 2012 15:46
Last Modified: 15 Mar 2012 12:47
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