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    Item Response Theory Analysis of the Recoded Internet Gaming Disorder Scale 9–Short-Form

    Stavropoulos, V. and Gomez, R. and Beard, C. and Pontes, Halley Item Response Theory Analysis of the Recoded Internet Gaming Disorder Scale 9–Short-Form. In: 5th International Conference on Behavioral Addictions (ICBA2018), 23–25 Apr 2018, Cologne, Germany. (Unpublished)

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    Based on the nine criteria for Internet Gaming Disorder (IGD) in DSM-5, the Internet Gaming Disorder Scale 9-Short Form (IGDS9-SF; Pontes & Griffiths, 2015) is the most widely used questionnaire for assessing IGD. Methods: The present study examined support for the unidimensional factor structure of the instrument, with a group of 868 adolescent and adult gamers from the United States of America, with criteria recoded as present or absent. The 2-parameter logistic model (2-PLM) was used to examine the item response theory properties of the criteria included in the measure. Results: Confirmatory factor analysis supported the one-factor model. The 2-PLM analysis indicated that all the criteria were strong discriminators of high and low latent IGD. Furthermore, the items measured more of the GAD dimension and with more precision from around +2 SD from the mean trait level. Conclusions: The implications of the findings for interpreting the IGDS9-SF scores for clinical practice are discussed.


    Item Type: Conference or Workshop Item (Paper)
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Psychological Sciences
    Depositing User: Administrator
    Date Deposited: 03 Jun 2021 13:46
    Last Modified: 07 Aug 2023 16:18


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