Psychometric validation of the Persian nine-item Internet Gaming Disorder Scale – Short Form: does gender and hours spent online gaming affect the interpretations of item descriptions?

Wu, T.Y., Lin, C.Y., Årestedt, K., Griffiths, M.D. ORCID: 0000-0001-8880-6524, Broström, A. and Pakpour, A.H., 2017. Psychometric validation of the Persian nine-item Internet Gaming Disorder Scale – Short Form: does gender and hours spent online gaming affect the interpretations of item descriptions? Journal of Behavioral Addictions, 6 (2), pp. 256-263. ISSN 2062-5871

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Abstract

Background and aims: The nine-item Internet Gaming Disorder Scale – Short Form (IGDS-SF9) is brief and effective to evaluate Internet Gaming Disorder (IGD) severity. Although its scores show promising psychometric properties, less is known about whether different groups of gamers interpret the items similarly. This study aimed to verify the construct validity of the Persian IGDS-SF9 and examine the scores in relation to gender and hours spent online gaming among 2,363 Iranian adolescents. Methods: Confirmatory factor analysis (CFA) and Rasch analysis were used to examine the construct validity of the IGDS-SF9. The effects of gender and time spent online gaming per week were investigated by multigroup CFA and Rasch differential item functioning (DIF). Results: The unidimensionality of the IGDS-SF9 was supported in both CFA and Rasch. However, Item 4 ( fail to control or cease gaming activities) displayed DIF (DIF contrast = 0.55) slightly over the recommended cutoff in Rasch but was invariant in multigroup CFA across gender. Items 4 (DIF contrast = −0.67) and 9 (jeopardize or lose an important thing because of gaming activity; DIF contrast = 0.61) displayed DIF in Rasch and were non-invariant in multigroup CFA across time spent online gaming. Conclusions: Given the Persian IGDS-SF9 was unidimensional, it is concluded that the instrument can be used to assess IGD severity. However, users of the instrument are cautioned concerning the comparisons of the sum scores of the IGDS-SF9 across gender and across adolescents spending different amounts of time online gaming.

Item Type: Journal article
Publication Title: Journal of Behavioral Addictions
Creators: Wu, T.Y., Lin, C.Y., Årestedt, K., Griffiths, M.D., Broström, A. and Pakpour, A.H.
Publisher: Akademiai Kiado
Date: June 2017
Volume: 6
Number: 2
ISSN: 2062-5871
Identifiers:
NumberType
10.1556/2006.6.2017.025DOI
Divisions: Schools > School of Social Sciences
Depositing User: Jonathan Gallacher
Date Added: 12 Jun 2017 12:05
Last Modified: 07 Jul 2017 08:53
URI: http://irep.ntu.ac.uk/id/eprint/30935

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