title: Greek version of the Internet Addiction Test: a validation study.
abstract: The aim of this project was to translate, culturally adapt and validate the Internet Addiction Test (IAT) in Greek adults. Twenty-one post-graduate medical students participated in the cultural adaptation procedure and 151 both post- and under-graduate medical students in the validation process. The internal consistency shown by a Cronbach's alpha was 0.91. Two-week test-retest reliability was rtt = 0.84, p < 0.001. Face validity was affirmed by 83.6 % of the students. In terms of convergent validity, the hours of daily internet use were positively correlated with IAT score (rho = 0.48, p < 0.001). Moreover, IAT scores were higher in students that reported use of online gambling (40.5 vs 29.2, p = 0.004), pornographic sites (36.5 vs 28.0, p = 0.003) and online games (35.6 vs 28.2, p = 0.009). Exploratory factor analysis revealed three interpretable factors for the IAT, "Psychological/Emotional Conflict", "Time Management" and "Neglect Work", that showed good internal consistency and concurrent validity, explaining 55.3 % of the variance. The Greek version of IAT has shown good psychometric properties, comparable with the original IAT and the previously published translated versions, and can be a useful tool in future studies on internet addiction.
authors.affiliation: Department of Hygiene, School of Medicine, Aristotle University of Thessaloniki, 54124, Thessaloníki, Greece, zoitsimtsiou@yahoo.gr.
authors.forename: Zoi
authors.initials: Z
authors.lastname: Tsimtsiou
authors.forename: Anna-Bettina
authors.initials: AB
authors.lastname: Haidich
authors.forename: Stamatia
authors.initials: S
authors.lastname: Kokkali
authors.forename: Theodoros
authors.initials: T
authors.lastname: Dardavesis
authors.forename: Kimberly S
authors.initials: KS
authors.lastname: Young
authors.forename: Malamatenia
authors.initials: M
authors.lastname: Arvanitidou
mesh_terms: D000293:Adolescent; D000328:Adult; D016739:Behavior, Addictive / Q000175:diagnosis* / Q000523:psychology; D002648:Child; D003220:Conflict, Psychological; D005163:Factor Analysis, Statistical; D006115:Greece; D006801:Humans; D020407:Internet / Q000706:statistics & numerical data*; D011594:Psychometrics / Q000592:standards*; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D013337:Students, Medical / Q000523:psychology* / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires / Q000592:standards; D013997:Time Factors; D014177:Translations; D055815:Young Adult