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Author(s): Linda Rajhvajn Bulat [sup.1] , Nika Susac [sup.1] , Marina Ajdukovic [sup.1] Author Affiliations: (1) https://ror.org/00mv6sv71, grid.4808.4, 0000 0001 0657 4636, Department of Social Work, Faculty of Law, University [...], Suicide is one of the leading causes of death among adolescents and repetitional suicidal ideations (SI) and non-suicidal self-injury (NSSI) often precede it. In order to improve recognition of youth who are at high risk of suicide, current study aims to identify which individual variables (personality, self-concept and adverse childhood experiences - ACE) predict prolonged NSSI and SI from middle to late adolescence. A 3-year longitudinal study was conducted with 1101 Croatian adolescents (aged 15-17). 181 students (72.4% females) reported either NSSI or SI or both in T1 and were included in all waves of the study. Analyses are focused on differentiation between adolescents who continue with NSSI/SI and those who stop with it in a 3-year period. Results showed that adolescents with prolonged NSSI/SI had more ACE, especially domestic violence, worse family financial status, higher neuroticism and lower results on self-concept variables. The prediction model of classification of those who have prolonged NSSI or SI was better for SI than NSSI, with predictors explaining 31% of variation in SI. Adolescents who experienced more ACE and report more neuroticism have a higher chance of prolonged SI, while youth who perceive better family financial status and have better relationships with parents have a greater chance to stop with it. For NSSI only neuroticism was a significant predictor. Considering significant variables which could predict prolonged NSSI and/or SI, data presented in this paper have both scientific and practical contribution in understanding, treating and preventing adolescents' mental health problems.

Author(s): Shan Jiang [sup.1] , Steven Sek-yum Ngai [sup.1] Author Affiliations: (1) grid.10784.3a, 0000 0004 1937 0482, Department of Social Work, The Chinese University of Hong Kong, , Hong Kong, [...], The multidimensional nature of child well-being requires valid and reliable tools for assessing children&apos;s multiple developmental outcomes. This study reports the psychometric properties of the Multidimensional Child Well-Being Scale (MCWBS), a 23-item self-report measure developed on the basis of a sample of school-aged children in China (N = 1322; M = 11.8; SD = 1.56). Exploratory factor analysis identified four well-being factors, namely, Physical, Psychological, Social, and Educational. The four-factor structure is further validated by confirmatory factor analysis (CFA). Cronbach&apos;s [alpha] for the total scale ([alpha] = 0.894) and each subscale (0.857 for physical well-being; 0.917 for psychological well-being; 0.801 for social well-being; and 0.805 for educational well-being) were satisfactory, indicating high reliability. MCWBS positively correlated with quality of life (r = 0.674, p < 0.01) and happiness (r = 0.519, p < 0.01), and negatively correlated with depressive symptoms (r = -0.437, p < 0.01), indicating convergent validity. Multi-group CFA provided support for gender, hukou, and age-related invariance of the MCWBS at the configural, metric, and scalar level. Overall, this study addresses the measurement gap by developing a reliable and valid instrument containing multiple domains of children&apos;s development outcomes, which can contribute to the child well-being research and practice.