A French adaptation of the Gambling-Related Cognitions Scale (GRCS): a useful tool for assessment of irrational thoughts among gamblers
Irrational thinking might be central in the maintenance of pathological gambling and should therefore be assessed, as other gambling-related cognitions (GRC), before treatment, especially when cognitive-behavioural therapy is proposed. Assessment tools investigating GRC exist but none are in French. Raylu and Oei have developed the Gambling-Related Cognitions Scale (GRCS), consisting of 23 items and a five-factor model. We aimed to determine if the French version of the GRCS had psychometric properties similar to those of the original version. Three hundred seventy-nine undergraduate students and 13 problem/pathological gamblers seeking treatment at the University Hospital of Nantes completed the GRCS. Confirmatory factor analysis, exploratory factor analysis, and multitrait analysis were performed. The French adaptation of the GRCS is a useful instrument for assessing GRC in order to appreciate the severity of pathological gambling, and it has the potential capacity to measure the treatment effect. Other studies are required to confirm test-retest reliability and sensitivity to change.
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