How can we measure gambling craving among adolescent gamblers? Psychometric properties of the Gambling Craving Scale

Background: Craving plays an important role in behavioural addictions such as Gambling Disorder (GD). How ever, it has only been included as a diagnostic criterion for substance addiction. Moreover, research on craving has focused mainly on adults, leaving out adolescents who can also be heavily involved in gambling behaviour. The purpose of this study was to investigate the psychometric properties of the most widely used craving assessment scale, the Gambling Craving Scale (GACS), in adolescent gamblers. Method: For the current study, 1246 adolescent gamblers attending secondary school were recruited to complete a self-report questionnaire online. The psychometric properties of the GACS were examined: Confirmatory factor analysis was conducted; reliability was examined using the internal consistency method; in terms of validity, the relationship between the GACS total and subscale scores with some risk factors for problem gambling, gambling frequency and gambling problem severity was analyzed. Results: The factor analysis supported the three-factor structure, and good internal consistency was found for the GACS total scale and its three subscales. As regards validity, the GACS subscales resulted to be significantly and positively associated with economic perception of gambling and outcome expectancy, gambling-related cognitive distortions, gambling frequency, and problem gambling. Limitations: The findings of this study were based on self-report data and only criterion validity was analyzed. Conclusions: The GACS is a valid and rapid self-report measure of gambling craving in adolescent gamblers. In terms of prevention, the multidimensionality of the GACS is important for interventions. Clinical samples of adolescents are needed to confirm the validity of the scale