This dissertation aims to understand the contribution of schools to reducing bullying behaviors and, in turn, to examine the benefits for students of attending a school that effectively reduces bullying. In doing so, this dissertation contributes to the literature on bullying by (a) locating the school as a key environment in social-ecology of…

This mixed methods study examines life purposes of Finnish adolescents (N = 843) at the end of their basic education. Purpose is understood as a long-term intention to accomplish something of meaning to the self, which also contributes to society. The research showed that, despite problem talk about adolescents' mental health, Finnish adolescents…

The capacity to interrogate data with critical thinking is a strong predictor of statistical literacy (SL). This data interrogation, from the data consumers' perspective, incorporates four complex response skills: "interpreting," "communicating," "evaluating," and "decision-making," and those skills are…

A multisite cluster-randomized trial (by school) was conducted to examine the effects of a combined mental health literacy and dialectical behavior therapy skills program implemented by teachers on three protective factors related to social and emotional well-being. The sample of eight schools that were randomly assigned to intervention included…

This paper provides an analysis of how Swedish 15-year-olds perform on the high-stakes national assessments in geography. It explicitly addresses which item characteristics produce differential item functioning (DIF) in favor of boys and girls respectively. The findings show that DIF occurs in favor of girls in items with constructed response and…

Background: Despite extensive research examining features of adolescents' ego-identity development, little research has demonstrated patterns of ego-identity development and its relationship with various individual and environmental factors that are theoretically important for identity development. Objective: The current study investigated…

Research shows a decline in U.S. adolescent mental health over several decades. It also suggests that higher levels of life satisfaction lead to better mental health outcomes in this population. The purpose of this study was to investigate correlations between adolescent life satisfaction and eight developmental attributes that can be fostered by…

Today's world is facing a problem with the growth of textile products and in particular, textile waste, which already represents a serious environmental problem. From the point of view of ensuring sustainable handling of textile products, it is thus very important that individuals have the appropriate knowledge, attitudes and skills for…

This study examined associations between perceived popularity trajectories and changes in proactive and reactive aggression in middle adolescence. The sample included 1,374 adolescents from 5 cohorts who were followed from Grade 7 to Grade 9 (49% males, M[subscript age] = 12.67 years, SD = 0.67). Popularity trajectories were identified based on…

Little is known about the naturalistic development of mindfulness in adolescence and how it relates to changes in emotional well-being. The current longitudinal study examined the development of one dimension of mindfulness, nonreactivity to difficult inner experience (or in more colloquial terms, being able to notice, but "take a step…

Marie Ståhl and Anita Hussénius have defined what discourses dominate national tests in chemistry for Grade 9 in Sweden by using feminist, critical didactic perspectives. This response seeks to expand the results in Ståhl and Hussénius's article "Chemistry inside an epistemological community box!--Discursive exclusions and inclusions in the…

This study aimed to examine the validity and reliability of an instrument designed to measure student perceptions of curricular goals in physical education, the Curricular Goals in Physical Education Questionnaire. Participants were 879 Finnish students from grades 7 to 9 (412 girls, 467 boys; mean age 13.81). An exploratory factor analysis was…

This is the final report of a large-scale independent evaluation of the Building Assets and Reducing Risks (BARR) model in ninth grade in eleven high schools in Maine, California, Minnesota, Kentucky, and Texas. This sample of schools included large and small schools in urban, suburban, and rural areas, serving students from a wide range of…

This study aims to answer whether there is a relation between various competition games played in ELT (English Language Teaching) classrooms and sympathetic tendency of EFL (English as a Foreign Language) learners towards English lesson. The study was carried on 302 participants consisting of 9th grade students from a high school, Gaziantep. The…

This study aims to investigate the effectiveness of using visual materials in teaching vocabulary to deaf students of EFL. For this purpose, 80 deaf students from a state special education vocational high school in Turkey contributed to this study. All students had first English classes in their lives and they are at the starter level of English,…