Volume 51, Issue 6 pp. 556-564
Original Article

Problem gamblers are hyposensitive to wins: An analysis of skin conductance responses during actual gambling on electronic gaming machines

Lisa Lole

Corresponding Author

Lisa Lole

School of Psychology, University of Wollongong, Wollongong, Australia

Brain & Behaviour Research Institute, University of Wollongong, Wollongong, Australia

Address correspondence to: Lisa Lole, School of Psychology, University of Wollongong, Northfields Ave., North Wollongong NSW 2522, Australia. E-mail: [email protected]Search for more papers by this author
Craig J. Gonsalvez

Craig J. Gonsalvez

School of Psychology, University of Wollongong, Wollongong, Australia

Brain & Behaviour Research Institute, University of Wollongong, Wollongong, Australia

Illawarra Institute for Mental Health, University of Wollongong, Wollongong, Australia

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Robert J. Barry

Robert J. Barry

School of Psychology, University of Wollongong, Wollongong, Australia

Brain & Behaviour Research Institute, University of Wollongong, Wollongong, Australia

Centre for Psychophysics, Psychophysiology, and Psychopharmacology, University of Wollongong, Wollongong, Australia

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Alex Blaszczynski

Alex Blaszczynski

School of Psychology, University of Sydney, Sydney, Australia

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First published: 03 March 2014
Citations: 27
This research was funded by Australian Research Council Linkage Grant LP0776836.

Abstract

Physiological arousal is purportedly a key determinant in the development and maintenance of gambling behaviors, with problem gambling conceptualized in terms of abnormal autonomic responses. Theoretical conceptualizations of problem gambling are discordant regarding the nature of deficit in this disorder; some accounts posit that problem gamblers are hypersensitive to reward, and others that they are hyposensitive to reward and/or punishment. Previous research examining phasic electrodermal responses in gamblers has been limited to laboratory settings, and reactions to real gaming situations need to be examined. Skin conductance responses (SCRs) to losses, wins, and losses disguised as wins (LDWs) were recorded from 15 problem gamblers (PGs) and 15 nonproblem gamblers (NPGs) while they wagered their own money during electronic gaming machine play. PGs demonstrated significantly reduced SCRs to reward. SCRs to losses and LDWs did not differ for either PGs or NPGs. This hyposensitivity to wins may reflect abnormalities in incentive processing, and may represent a potential biological marker for problem gambling.

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