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…

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…

There has been an increase in peer violence in Vietnam. Although normative beliefs approving aggression have been considered an important factor in the development of peer violence in Western countries, few studies examine the factor in Vietnamese context. This limitation may be due to the lack of a validated scale used to evaluate the factor. The…

Mental health conditions are more prevalent in autistic people than non-autistic people. The Strengths and Difficulties Questionnaire is a commonly used screening tool for emotional and behavioural difficulties in autistic children and adolescents. However, few studies have assessed the psychometric properties of the Strengths and Difficulties…

Introduction/Background: In 2016, the Adolescent Motor Competence Questionnaire (AMCQ) was developed in Australia. The AMCQ was developed to assess perceived motor competence in adolescents between the ages of 12 and 18 years. The 26 items represent four factors: participation in physical activity and sports, activities of daily living, public…

Robust evidence links students' positive mental health with academic achievement and provides a compelling rationale for developing and refining strength-based assessments. The Social Emotional Health Survey--Secondary (SEHS-S) assesses adolescents' social and emotional skills and positive psychological dispositions. Previous studies provide…

Sense of coherence (SOC) is a relevant contributor and predictor of the individuals' mental and physical health. There are a number of studies about SOC, but only two validation articles of the sense of coherence scale (SOCS) were found on adolescents and none on children. The aim of this research was to validate the SOC scale in youth under 18.…

Little is known about whether a widely used mindfulness measure in adults--the Five Facet Mindfulness Questionnaire (FFMQ)--is also reliable and valid in adolescents. The current study evaluated the psychometric properties of a 20-item short-form FFMQ in a sample of 599 high school students (M[subscript age] = 16.3 years; 49% female) living in the…

Little is known about whether a widely used mindfulness measure in adults--the Five Facet Mindfulness Questionnaire (FFMQ)--is also reliable and valid in adolescents. The current study evaluated the psychometric properties of a 20-item short-form FFMQ in a sample of 599 high school students (M[subscript age] = 16.3 years; 49% female) living in the…

This article aims to adapt and validate the Risk-Taking and Self-Harm Inventory for Adolescents (RTSHIA) in Portuguese. Results confirm the 2-factor structure originally proposed (risk-taking and self-harm). Both dimensions presented an adequate internal reliability and temporal stability. Convergent validity and sociodemographic differences are…

While adolescence is a critical stage of development marked by heightened bottom-up emotional reactivity and immature top-down regulatory control, research on emotion regulation has relatively neglected middle childhood to adolescence years. This may be attributed to the limited number and scope of age-appropriate, reliable, and valid measures of…

The Avoidance and Fusion Questionnaire for Youth--Eight-Item Short Version (AFQ-Y8) assesses psychological inflexibility in youth. The present study is the first to examine alternative measurement models for the Greek adaptation of the AFQ-Y8, latent associations with the Acceptance and Action Questionnaire--II (AAQ-II), gender-group invariance,…

The Strengths and Difficulties Questionnaire (SDQ), with its three forms (youth, parent and teacher version), is widely used to assess emotional and behavioural disorders in children and adolescents. The present study examined the factor structure and psychometric properties of the teacher version of the scale (SDQ-T) with adolescents from…

School bullying is a significant public health problem and a widespread type of school violence. Empirically validated evaluation scales are needed for use in research and practice to explain the nature and scope of adolescent bullying. The current study investigated the multilevel factor structure and measurement invariance of the Olweus…

The Utrecht-Management of Identity Commitments Scale (U-MICS) is one of the most-commonly used self-report scales to assess personal identity in studies of developmental processes. While it has been translated and validated in many countries around the world, evidence of its applicability in Greek is absent. The purpose of this study was to…