eCite Digital Repository

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


Gomez, R and Stavropoulos, V and Beard, C and Pontes, HM, 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. ISSN 1557-1874 (2018) [Refereed Article]


Copyright Statement

Copyright 2018 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

DOI: doi:10.1007/s11469-018-9890-z


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 Details

Item Type:Refereed Article
Keywords:IGDS9-SF, one-factor model, item response theory, 2PLM, internet gaming disorder, dsm-5, IGDS9-SF, behavioural addictions
Research Division:Health Sciences
Research Group:Health services and systems
Research Field:Mental health services
Objective Division:Health
Objective Group:Public health (excl. specific population health)
Objective Field:Mental health
UTAS Author:Pontes, HM (Dr Halley de Oliveira Miguel Pontes)
ID Code:132480
Year Published:2018
Web of Science® Times Cited:17
Deposited By:Psychology
Deposited On:2019-05-08
Last Modified:2022-07-05
Downloads:16 View Download Statistics

Repository Staff Only: item control page