Background: Acceptance and Commitment Therapy (ACT) is a transdiagnostic approach which aims to increase psychological flexibility. Higher psychological flexibility has been associated with reduced psychological distress, mental health symptoms and improvements in well-being and functioning. Reviews of ACT for children and young people (CYP)…

The aim of this study is to find evidence of factorial validity, measure equivalence by gender, and internal consistency of the Mental Health Continuum-Short Form (MHC-SF) in a sample of Ecuadorian teenagers. The study uses a psychometric design to explore the validity and reliability of the measure. Participants of the study were 1154 teenagers…

Sustainable development goals are used as guidance for future career and life design. The importance of including young people in the sustainability process is recognized also by recent vocational guidance literature. Nevertheless, the assessment of the Sustainable Development Goals itself presents a challenge. For these reasons, we validated a…

Growing evidence suggests that providing children and adolescents with explicit opportunities to learn social and emotional skills during elementary and secondary school can support positive developmental outcomes. However, understanding the benefits of social-emotional learning (SEL) programs requires an ability to measure potential changes in…

Cultural variations in affective experiences are observed. Research on positive affect with refined categorizations has been limited. This study examined the Affect Valuation Theory and its measure, the Affect Valuation Index (AVI), using a sample of high school students from rural China (N = 676, M[subscript age] = 16.17 years, SD = 0.94). The…

In China there is an increasing need for suitable measures to evaluate clinical outcomes in adolescents' psychological counselling processes. To satisfy this purpose, this study evaluated the Young Person's Clinical Outcomes in Routine Evaluation (YP-CORE)'s psychometric properties in a Chinese context with two groups: psychiatric outpatients…

The Bullying Participant Behavior Questionnaire (BPBQ) is widely used to assess bullying roles in different populations. This study aimed to investigate the structure, construct validity, and reliability of a German version of the BPBQ in a sample of 250 German-speaking adolescents aged 10-16 years (M = 12.92; SD = 1.36; 51.6% female). A second…

The study aimed at exploring, confirming, and validating the factor structure of sibling attachment inventory (SAI) within the Indian cultural context. The hypothesis posits that SAI will show reliable sibling attachment measures, evaluating its psychometric properties with 250 students enrolled in Class XI within govt and private schools,…

In this registered report, we examined interrelationships between established constructs of self-determination and economic hardship using data from the National Longitudinal Transition Study 2012 (NLTS2012). We tested the hypothesized factor structure of selected NLTS2012 items assessing constructs associated with self-determination (i.e.,…

Objective: The factor structure of the Grit-S is the subject of much debate. The purpose of this study was to examine the factor structure of the Grit-S and validate its psychometric properties among racially/ethically minoritized adolescents using Item Response Theory (IRT). Method: Data were collected from 651 racially/ethnically minoritized…

Introduction: Puberty health, as a fundamental aspect of adolescent health, requires targeted and evaluated educational programs. However, to date, a comprehensive tool to measure the effectiveness of these programs has not been developed. Therefore, this study aimed at the design and psychometric validation of the Evaluation Scale for Puberty…