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Title: Self-efficacy in Pathological Gambling Treatment Outcome: Development of a Gambling Abstinence Self-efficacy Scale (GASS)
Authors: Hodgins, David C.
Peden, Nicole
Makarchuk, Karyn
Keywords: Compulsive gambling -- Diagnosis;Compulsive gambling -- Treatment
Issue Date: Nov-2004
Publisher: Routledge, part of the Taylor & Francis Group
Citation: International Gambling Studies, 4(2), 99-108.
Abstract: A 21-item measure of gambling abstinence self-efficacy (GASS) was developed. Principal component analyses of 101 pathological gamblers supported the use of a total score that showed good internal (a = .93) and retest reliability (ICC (n = 35) = .86) as well as four subscales: 1) winning/external situations (6 items, a = .91); 2) negative emotions (9 items, a = .87); 3) positive mood/testing/urges (3 items, a = .70); and 4) social factors (3 items, a = .81). The total and subscales showed moderate relationships with single item ratings of confidence to abstain from gambling and weak or nonsignificance relationships with demographic and gambling-related variables. The total score and three of the subscales showed evidence of predictive validity for gamblers not currently involved with treatment. Higher self-efficacy was related to fewer days of gambling over a 12-month period. These results provide preliminary support for the reliability and validity of the GASS.
Description: The official version of scholarly record is accessible from
ISSN: 1445-9795
Appears in Collections:Institute Funded Reports

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