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Item response theory analysis of the recoded Internet Gaming Disorder Scale-Short-Form (IGDS9-SF)

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Gomez, R, Stavropoulos, V, Beard, C and Pontes, HM ORCID: 0000-0001-8020-7623 2018 , 'Item response theory analysis of the recoded Internet Gaming Disorder Scale-Short-Form (IGDS9-SF)' , International Journal of Mental Health and Addiction , pp. 1-21 , doi: 10.1007/s11469-018-9890-z.

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Abstract

Based on the nine criteria for Internet gaming disorder (IGD) in DSM-5, the Internet Gaming Disorder Scale 9-Short Form (IGDS9-SF; Pontes and Griffiths 2015) is the most widely used questionnaire for assessing IGD. The present study examined support for the unidimensional factor structure of the instrument, with a group of 868 adolescent and adult gamers from the USA, with criteria recoded as present or absent. The two-parameter logistic model (2PLM) was used to examine the item response theory properties of the criteria included in the measure. Confirmatory factor analysis supported the one-factor model. The 2PLM 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. The implications of the findings for interpreting the IGDS9-SF scores for clinical practice are discussed.

Item Type: Article
Authors/Creators:Gomez, R and Stavropoulos, V and Beard, C and Pontes, HM
Keywords: IGDS9-SF, one-factor model, item response theory, 2PLM, internet gaming disorder, dsm-5, IGDS9-SF, behavioural addictions
Journal or Publication Title: International Journal of Mental Health and Addiction
Publisher: Springer
ISSN: 1557-1874
DOI / ID Number: 10.1007/s11469-018-9890-z
Copyright Information:

Copyright 2018 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

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