Testing the Personal Wellbeing Index on 12–16 Year-Old Adolescents in 3 Different Countries with 2 New Items

The 7-item adult version of the Personal Wellbeing scale (Cummins et al. Social Indic Res 64:159–190, 2003) was administered to two samples of adolescents aged 12–16 in Brazil (N = 1,588) and Spain (N = 2,900), and to a sample of adolescents aged 14–16 in Chile (N = 843). The results obtained were analyzed to determine its psychometric characteristics when used with adolescents in the three different countries and to check whether two additional...