Development and psychometric validation of Internet Gaming Disorder Scale-Short-Form (IGDS9-SF) in a Brazilian sample

Development and psychometric validation of Internet Gaming Disorder Scale-Short-Form (IGDS9-SF) in a Brazilian sample

•Psychometric properties of IGDS9-SFin a sample from Brazil.•Validity and reliability evidence for the use of the Brazilian version (α = 0.82).•IGDS9-SF cutoff using clinical evaluation from certified psychiatrists.•AUC of 0.83 for IGD risk and AUC 0.935 for IGD positive.•Supports the use of the IGD...

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Published in:Addictive behaviors Vol. 103; p. 106191
Main Authors: Severo, Rovena Batista, Barbosa, Ana Paula Pereira Neto, Fouchy, Daiana Rafaela Canabarro, Coelho, Fábio Monteiro da Cunha, Pinheiro, Ricardo Tavares, de Figueiredo, Vera Lucia Marques, de Siqueira Afonso, Vinícius, Pontes, Halley M., Pinheiro, Karen Amaral Tavares
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01-04-2020
Subjects:
Addictive behaviors
Adolescent
Adult
Brazil - epidemiology
Computer games
Factor Analysis, Statistical
Female
Humans
IGD
IGDS9-SF
Internet Addiction Disorder - diagnosis
Internet Gaming Disorder
Male
Psychometrics
Psychometrics - instrumentation
Reproducibility of Results
ROC Curve
Young Adult
Brazil
Internet Gaming Disorder
Psychometrics
IGDS9-SF
Computer games
Addictive behaviors
IGD
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Summary:•Psychometric properties of IGDS9-SFin a sample from Brazil.•Validity and reliability evidence for the use of the Brazilian version (α = 0.82).•IGDS9-SF cutoff using clinical evaluation from certified psychiatrists.•AUC of 0.83 for IGD risk and AUC 0.935 for IGD positive.•Supports the use of the IGDS9-SF for early diagnosis of IGD. Objectives: The aim of this study was to develop and examine the psychometric properties of the IGDS9-SF in a sample of Brazilian gamers and to find the best cut-off point for this instrument using a normative and clinically diagnosed sample of gamers. Methods: A total of 610 participants were recruited to the present study. Construct validity was assessed through Exploratory and Confirmatory Factor Analysis (EFA, CFA). Criterion-related validity was established through the associations with Game Addiction Scale (GAS) and weekly gameplay. Reliability analysis was performed using the Cronbach’s alpha (α) as the indicator of internal consistency. A cut-off point was estimated using the Receiver Operating Characteristics Curve (ROC curve) where the results of a clinical assessment was used as the gold standard. Results: EFA and CFA findings confirmed the single-factor structure of the IGDS9-SF. Positive correlations indicated adequate criterion-related validity, and the scale was shown to be reliable (α=0.82). Finally, the optimal cut-off point for risky gaming was found to be >16 points and for diagnosis to be >21 points. Conclusions: This study provides validity and reliability evidence for the use of the Brazilian version of the IGDS9-SF in the assessment of Internet Gaming Disorder, further supporting its usefulness as a robust psychometric tool that can be employed in clinical and research settings in Brazil.
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ISSN:0306-4603
1873-6327
DOI:10.1016/j.addbeh.2019.106191