[Development and psychometric validation of the Brief Smartphone Addiction Scale (BSAS) with schoolchidren].

Smartphone use among children increases continuously. A growing range of stimulating applications may trigger the risk of addiction. The aim of this study was to develop a brief, easy-to-use and score tool for screening children at risk for smartphone addiction. A 6-item agree-disagree Likert scale (6-point range), was developed on the basis of the 'components' model of addiction (Griffiths, 2005). The brief tool was administered to 441 Hungarian speaking schoolchildren (mean age=13.4 years, SD=2.22) along with the 26-item Smartphone Addiction Inventory (SPAI; Lin et al, 2014). Principal components analysis yielded a single component for the 6-item tool, which accounted for 52.38% of the total variance. The internal reliability of the scale was good (Cronbach's alpha=0.82). Content validity was confirmed by statistically significant differences between heavy and light users (p <.001). The brief tool correlated positively and significantly with the 26-item SPAI (r = 0.67, p <.001), that justified its congruent validity. Younger children (9-13 years) scored higher on the scale than their older (14-18 years) peers (p <.001). The Hungarian version of the brief smartphone addiction inventory appears to be a valid and reliable tool for screening for mobile phone addiction among schoolchildren.