Self-efficacy in Pathological Gambling Treatment Outcome: Development of a Gambling Abstinence Self-efficacy Scale (GASS)
OtherInstitute Funded Reports
SubjectCompulsive gambling -- Diagnosis
Compulsive gambling -- Treatment
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AbstractA 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.
SponsorshipThis research was funded by grants from the National Center for Responsible Gaming and the Alberta Gaming Research Institute.
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