E-ISSN : 2733-4538
The purpose of this study is to construct the clinical version of the Gambling Related Cognition Scale (GRCS-12), which is based on Gambling Related Cognitions Scale (GRCS) and confirm its optimal validity for Korean clinical sample. A total of 2,420 problem/pathological gamblers (male 97.1%) seeking treatment for gambling disorder completed the GRCS. They were randomly divided into two groups. Item analysis and explanatory factor analysis (EFA) were performed on the data of group 1(1,237) to construct GRCS-12 and confirmatory factor analysis (CFA) was performed on the data of group 2 (1,183) and the validity of GRCS-12 was confirmed. Based on the results of item analysis and EFA on the data of group 1, GRCS-12 consisting of four factors (prediction/interpretation, gambling-related expectancies, illusion of control, and perceived inability to stop gambling) and twelve items was constructed for group 1. The four factors accounted for 67.06% of the total variance. Reliability and validity were confirmed using group 2. The CFA results indicated that the four factors had internal consistency ranging from 0.68 to 0.72, while the reliability of all twelve items was 0.80. Thus, GRCS-12 showed good convergent validity, discriminant validity, criterion-related and predictive validity, and sensitivity to change. The implications and limitations of the present study along with suggestions for future research have also been discussed.
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