Turkish Journal of Psychiatry

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Adaptation of Internet Gaming Disorder Questionnaire to Turkish:Reliability and Validity Study Süleyman ÇAKIROĞLU, Nusret SOYLU 2019 30(2): 130-136
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Objective: This study aims to investigate the validity and reliability of
the Turkish version of Internet Gaming Disorder Questionnaire.
Method: The Experimental Sample of this study included 1161
students aged between 10 and 18 from four different schools. Language
equivalence study of the questionnaire was conducted by two experts
one of whose native language was English and fluent in Turkish, and
the other, vice versa. Reliability of the questionnaire was evaluated by
Test-retest method and Cronbach’s alpha internal consistency analysis.
Construct validity of the questionnaire was examined by confirmatory
factor analysis. SPSS and -MPLUS 6.1- softwares were used for
statistical analyses.
Results: Cronbach’s alpha coefficient for internal consistency was
0.86. Total score correlations varied between 0.23 and 0.70 (p<0.01).
Test-retest score averages did not differ for both the total and subgroup
scores. Test-retest correlation was calculated as 0.865 (p<0.01).
Confirmatory factor analyses for construct validity showed that factor
loadings of items varied between 0.165 and 0.785. Cut-off score of the
questionnaire was determined as 69 after Cluster analyses and ROC
analyses.
Conclusion: This study concluded that the validity and reliability
of the Turkish version of Internet Gaming Disorder Questionnaire
developed by Pontes et al. were satisfactory.