Validation of smartphone addiction scale - Short version (SAS-SV) in Brazilian adolescents.

The objectives of this study were to analyze the psychometric properties of the Smartphone Addiction Scale - Short Version (SAS-SV) as follows: (i) the factor structure of the SAS-SV using different statistical methods; (ii) the evidence of convergence; (iii) the temporal stability of the SAS-SV; and (iv) predictive SAS-SV validity. A total of 451 adolescents participated in this study (age M = 13.1; SD = 1.22) by completing a sociodemographic questionnaire (including items evaluating the perception of smartphone use), the Internet Addiction Test (IAT), and the SAS-SV. It was found that 53.2% demonstrated problematic smartphone use. The SAS-SV showed good reliability (α = 0.81; ω = 0.78), and all of its items were kept. The network analysis indicated that the items evaluating the withdrawal and preoccupation symptoms had the greatest influence on the network. The intraclass correlation coefficient was 0.846 and indicated good temporal stability of the SAS-SV 20-30 days after the first application. The receiver operating characteristic (ROC) curve analysis indicated 33 points as the best cutoff for the SAS-SV (AUC = 0.739; sensitivity = 65.37%; specificity = 72.26). The instrument also showed a moderate correlation with the variables related to smartphone use (time spent on smartphones, number of messages sent and received, and number of times the smartphone is checked). These data indicate that the SAS-SV may be a reliable instrument for use with Brazilian adolescents.

Validity and reliability of the Brazilian version of the Smartphone Addiction Scale-Short Version for university students and adult population / Validade e confiabilidade da versão Brasileira da Smartphone Addiction Scale-Short Version para estudantes universitários e adultos

This study sought evidence of the validity of the Smartphone Addiction Scale-Short Version for a Brazilian sample of 718 individuals, amongst university students (n = 387, M age = 22.1 years) and adults (n = 331, M age = 35.2 years), who completed a sociodemographic questionnaire and the scale. The transcultural adaptation was carried out using specific protocols as recommended by expert's committees. The factorial structure was evaluated by three methods: Confirmatory Factor Analysis, Principal Component Analysis, and Network Analysis. The adjustment parameters were not adequate and Principal Component Analysis explained 39.2% of the variance. The scale showed good reliability (α = 0.81) and a 39.4% prevalence of problematic phone use. The Network Analysis indicated that the correlations between the items were similar in the two populations. This is an unpublished study evaluating the usage pattern of smartphones in a sample of the adult population from all Brazilian states.

Este estudo buscou evidências de validade da Smartphone Addiction Scale-Short Version para uma amostra brasileira de 718 indivíduos, entre universitários (n = 387; Midade = 22,1 anos) e adultos (n = 331; Midade = 35,2 anos), que preencheram um questionário sociodemográfico e uma escala. Realizou-se a adaptação transcultural com protocolos específicos respondidos por juízes. A estrutura fatorial foi avaliada por três métodos: Análise Fatorial Confirmatória, Análise de Componentes Principais e Análise de Rede. Os parâmetros de ajustes não foram adequados e a Análise de Componentes Principais explicou 39,2% da variância. A escala mostrou boa confiabilidade (α = 0,81) e prevalência de 39,4% de uso problemático de smartphone. A Análise de Rede indicou que as correlações entre os itens foram parecidas nas duas populações. Este é um estudo inédito, avaliando o padrão de uso de smartphones em uma amostra da população adulta de todos os estados brasileiros.