Background: The Problematic Online Gaming Questionnaire (POGQ) is an 18-item self-rated measure designed to assess the degree of problematic online gaming. This study translated the POGQ into Japanese (POGQ-J) and examined the POGQ-J’s factor structure, validity, and reliability for a Japanese population. Method: A total of 285 undergraduate students (128 males, 157 females, Mage = 19.66, SD = 1.36) participated in this study. Results: A confirmatory factor analysis indicated the appropriateness of the POGQ-J’s six-factor structure, χ2(129) = 106.027, p <.931; CFI =.957; RMSEA =.040; SRMR =.054. Regarding convergent validity, the POGQ-J was found to be related to the time spent on online gaming (r =.309), the Game Addiction Scale for Adolescents (r =.824), and Young’s Internet Addiction Test (r =.581). Finally, the POGQ-J was found to have a high test–retest reliability. Conclusions: The POGQ-J is valid and reliable for assessing problematic online gaming in a Japanese population.
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