Ten-Item Internet Gaming Disorder Test (IGDT-10): Psychometric properties across seven language-based samples
Abstract
The Ten-Item Internet Gaming Disorder Test (IGDT-10) is a brief instrument developed to assess Internet Gaming Disorder as proposed in the DSM-5. The first psychometric analyses carried out among a large sample of Hungarian online gamers demonstrated that the IGDT-10 is a valid and reliable instrument.
The present study aimed to test the psychometric properties in a large cross-cultural sample. Methods: Data were collected among Hungarian (n = 5222), Iranian (n = 791), Norwegian (n = 195), Czech (n = 503), Peruvian (n = 804), French-speaking (n = 425) and English- speaking (n = 769) online gamers through gaming-related websites and gaming-related social networking site groups.
Results: Confirmatory factor analysis was applied to test the dimensionality of the IGDT-10. Results showed that the theoretically chosen one-factor structure yielded appropriate fit to the data in all language-based subsamples.
In addition, results indicated measurement invariance across all language-based subgroups and across gender in the total sample. Reliability indicators (i.e., Cronbach's alpha, Guttman's Lambda-2, and composite reliability) were acceptable in all subgroups.
The IGDT-10 had a strong positive association with the Problematic Online Gaming Questionnaire and was positively and moderately related to psychopathological symptoms, impulsivity and weekly game time supporting the construct validity of the instrument. Conclusions: Due to its satisfactory psychometric characteristics, the IGDT-10 appears to be an adequate tool for the assessment of internet gaming disorder as proposed in the DSM-5.