Abstract
The study aimed to assess the psychometric properties of the Brazilian Portuguese version of the Internet Addiction Test (IAT) in students. The methodological study population consisted of secondary and university students from Montes Claros, Minas Gerais State, Brazil. The following parameters were assessed: psychometric sensitivity, construct validity (factor, convergent, discriminant, and test of hypothesis), criterion validity (concurrent), and reliability (internal consistency and reproducibility). A total of 2,519 students participated, 29.6% of whom were secondary school enrollees. A three-factor measurement model was adjusted ("emotional and cognitive preoccupation with the Internet", "problems in managing time", and "performance problems"), which obtained satisfactory adequacy indices and stable structure in the independent subsamples. Convergent validity was close to the recommended level (mean extracted variation = 0.32, 0.41, and 0.45 and compound reliability values = 0.84, 0.81, and 0.71), and discriminant and concurrent validities were adequate. Internal consistency was adequate (alpha = 0.906), as was reproducibility (kappa = 0.73 and intraclass correlation coefficient = 0.90). The Portuguese-language version of the IAT presented satisfactory levels of validity, reliability, and stability in independent samples of students.
Highlights
Em ambos os níveis de ensino, todos os alunos das turmas selecionadas foram convidados a participar do estudo
A Figura 1 apresenta o modelo trifatorial ajustado pela análise fatorial confirmatória (AFC), as cargas fatoriais dos itens, suas variâncias e as correlações entre os três fatores
Psychometric properties of the internet addiction test
Summary
Psychometric properties of the Internet Addiction Test in students in Montes Claros, Minas Gerais State, Brazil. O objetivo foi avaliar as propriedades psicométricas da versão traduzida para o português do Internet Addiction Test (IAT) em estudantes. Cuja população foi constituída por estudantes dos ensinos Médio e Superior de Montes Claros, Minas Gerais, Brasil. Embora o IAT tenha apresentado níveis adequados de validade e confiabilidade em estudantes de outros países, não terá, necessariamente, o mesmo desempenho em grupos populacionais inseridos em diferentes contextos daqueles em que foi aplicado anteriormente 25, pois o uso da Internet pode ser influenciado por fatores demográficos, sociais, culturais e econômicos 5. O objetivo do presente estudo foi avaliar a validade e confiabilidade da versão traduzida para o português do IAT em uma amostra de estudantes brasileiros.
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