This study examined whether social mistrust in early adolescence was general or referent-specific. We used a multi-trait multi-method approach to examine the validity of mistrust measures across social referents (mistrust toward people in general, toward peers, and toward teachers), using questionnaires and an online task. Sixth graders (N = 1243,…

Background: Difficulties identifying anxiety disorders in primary-school aged children present significant barriers to timely access to support and intervention. This study aimed to develop a brief assessment tool that can identify children with anxiety disorders in community settings, with a high level of sensitivity and specificity. Methods:…

This study developed an Adolescents' Uncertainty Scale (AUS), with the aim of understanding individual differences in uncertainty among adolescents. In the pretest phase, 507 ninth-grade students were recruited. After exploratory factor analyses, a 25-item AUS with four dimensions--irresoluteness, instability, lack of self-knowledge, and…

Social emotions such as shame and guilt are critical to social-emotional development in any culture because they help children and adolescents learn to adhere to the social rules and norms of their culture. However, most instruments that currently measure these emotions were validated only in samples from Western countries. This study aimed to…

This study aims to establish a Turkish version of the Children's Inventory of Anger Scale (ChIA) developed by Nelson and Finch (2000) to evaluate the intensity of anger experienced in potentially anger-provoking situations in children. The research sample consists of 502 primary and secondary school students attending their education in Hatay…

Background: The conceptual framework for "School as a Protective Factor" approach was presented in a companion article in this issue of the journal. The current article describes the validation of the "School as a Protective Factor-Brief (SPF-Brief)," a 13-item survey measuring the 3 core constructs and 13 defining…

This paper demonstrated how to apply Machine Learning (ML) techniques to analyze student interaction data collected in an online mathematics game. Using a data-driven approach, we examined 1) how different ML algorithms influenced the precision of middle-school students' (N = 359) performance (i.e. posttest math knowledge scores) prediction and 2)…

A growing number of studies support the internal and external validity of youth self-reported sluggish cognitive tempo (SCT) symptoms. However, no study has examined SCT in adolescents without ADHD, examined whether adolescent self-reported SCT is distinct from adolescent self-reported ADHD inattention (ADHD-IN), or evaluated whether links between…

This paper demonstrated how to apply Machine Learning (ML) techniques to analyze student interaction data collected in an online mathematics game. Using a data-driven approach, we examined: (1) how different ML algorithms influenced the precision of middle-school students' (N = 359) performance (i.e. posttest math knowledge scores) prediction; and…

This paper demonstrates how to apply Machine Learning (ML) techniques to analyze student interaction data collected in an online mathematics game. We examined: (1) how different ML algorithms influenced the precision of middle-school students' (N = 359) performance prediction; and (2) what types of in-game features were associated with student…

The recently developed short form of the Experiences in Close Relationships Scale--Revised Child version (ECR-RC) is a promising tool to assess anxious and avoidant attachment in children and adolescents. Yet, evidence concerning its validity in middle childhood is limited. This study aimed to test the psychometric properties of the 12-item ECR-RC…

The Flourishing Scale (FS) is a brief eight-item inventory used to measure psychological well-being. This study evaluated the psychometric properties of the FS in a sample of 766 Chinese adolescents. The paper-and-pencil method was adopted. Confirmatory factor analysis was conducted to examine the factor structure of the FS items. Expanded…

The purpose of this study was to analyze the relationship between the level of physical activity, social physique anxiety, and academic achievement. This study evaluated 524 students in total from four schools in Istanbul province, 272 of whom were female and 252 were male students. In order to determine the level of physical activity of students,…

The objectives in this research were to determine the construct validity of both an adapted self-confidence questionnaire, the Personal Evaluation Inventory (PEI), developed by Shrauger and Schohn, and a Generalised Anxiety Disorder (GAD) questionnaire, which was adapted from the Taylor Manifest Anxiety Scale. The research was conducted in two…

Character strengths are an important foundation for positive development and thriving in adolescence. Most research on character strengths has been conducted with youths in Western cultures. We examined character strengths in relation to positive and negative well-being indicators in a sample of Iranian youths. We investigated the reliability and…