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The 7-item Game Addiction Scale GAS has been validated under standard confirmatory factor analysis and exhibits good psychometric properties. Whether this scale satisfies the necessary conditions for consideration by item response theory IRT modeling remains unknown. However, the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition DSM-5 recently proposed criteria, in its section 3, to define internet gaming disorder IGD to promote research on this possible condition.
Background: Gaming disorder GD has been shown to co-occur with attention deficit hyperactivity disorder ADHD , yet few studies to date have investigated their longitudinal associations. Method: The sample included 5, young Swiss men mean age was 20 years at wave 1 and 25 years at wave 3. Only the ADHD inattention subscale showed a bidirectional longitudinal relationship with the GD score standardized Beta from inattention at age 20 to GD score at age 0. Video gaming is a widespread activity among young men. Prevalence rates may be higher in Asian countries 4 , 5.