RESUMO
Introduction: The goals of this study were to: (1) adapt and validate a measure of aloneliness (Solitude and Aloneliness Scale; SolAS) for use among Indonesian adolescents; (2) examine the associations between aloneliness and indices of well-being in this unique developmental and cultural context; and (3) explore possible grade and gender effects. Methods: Participants were Indonesian adolescents aged 11-18 years (M = 14.13 years, SD = 1.62; 58.51% girls) who completed self-report assessments of the adapted SolAS (newly created Indonesian translation), as well as indices of adjustment (e.g., well-being, basic psychological need satisfaction). Results: Among the results, the Indonesian version of the SolAS demonstrated good psychometric properties (e.g., factor structure, good internal reliability) and initial evidence of validity (e.g., significant negative correlations with measures of psychological well-being and basic psychological needs satisfaction). Girls reported higher levels of aloneliness than boys, but no significant grade differences emerged. Conclusions: The SolAS evidenced good psychometric properties and evidence of validity in a sample of Indonesian adolescents, suggesting it is desirable for cross-cultural research.