Abstract
This study aims to validate the structure of the Use, Abuse and Dependence on the Internet (UADI) inventory on a sample of 1056 high school ( n = 820) and university ( n = 236) students. In particular, we performed exploratory and confirmatory factor analyses on sub-samples (cross-validation), tested the construct convergent validity, and tested correlations of UADI dimensions with HEXACO personality inventory (HEXACO-PI, where HEXACO stands for the six assessed dimensions: Honesty–Humility, Emotionality, eXtraversion, Agreeableness, Conscientiousness and Openness to experience) and external criteria (daytime internet use, etc.). Five dimensions (Compensatory Escape, Dissociation, Real Life Impact, Experience Making and Addiction) were best captured by a second-order factor structure with a factor reflecting Real Life Impact and Dependence saturated by the other four dimensions. This latter factor converged with other traditional measures of internet dependence. The results are discussed in light of the relationships with validity criteria.
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