Purpose: To examine the factor structure and measurement invariance of the Körperkoordinations Test Für Kinder (KTK) and covariates of motor competence in a sample of Iranian children aged 5-14 years. Methods: Participants were children aged 5-14 years (N = 432, 61% boys). Age, sex, and body mass index were collected. Confirmatory factor analysis…

The present three-wave panel study (N = 973, X-bar[subscript age] = 11.14) sought to advance the current literature on media internalization in preadolescence by examining triggers and consequences related to preadolescents' media internalization and use of media for appearance information. We sought to examine whether (a) media internalization…

The aim of this study was to investigate the relationship between body mass index (BMI) and educational periods in secondary school students. The study was conducted on 832 students, 418 girls (M[subscript age]: 12.99±.83) and 414 boys (Mage: 12.92±.85), who received dual and full-time education in the centre of Sivas Province. As data collection…

Purpose: The purpose of this study was to analyze tracking and stability of motor coordination in children from age 6 years to ages 9 and 13 years. Method: Data were from the Copenhagen School Child Intervention Study. Motor coordination (MC) was measured using the körperkoordinationstest für Kinder (KTK) test. The crude performance score on every…

Emotional eating, defined as eating in response to affect, may increase during early adolescence, a time of heightened emotionality and increased prevalence of emotional disorders. We investigated change in emotional eating, while also testing the influence of social-emotional risk factors. Study participants (N = 379, mean age [M[subscript age]]…

In adolescence, the complexity of human ontogenesis embraces biological growth and maturation as well as mental, affective, and cognitive progress, and adaptation to the requirements of society. To accept our morphological constellation as part of our gender may prove a problem even to a child of average rate of maturation. The main purposes of…

Objectives: To examine associations between weight misperception and youth health risk and protective factors. Methods: Three thousand ten US seventh-graders (72.1% white, mean age: 12.7 years) self-reported height, weight, risk, and protective factors. Analyses were conducted to determine cross-sectional and longitudinal associations between…

The purpose of this study was to survey the weight status of children and adolescents with autism spectrum disorders (ASDs) in Iranian pupils and further to investigate the most likely associated factors such as demographics, autism severity and medications. The survey was designed to provide a random sample of 113 children and adolescents (boys =…

Despite knowledge that early pubertal timing predicts adolescent girls' substance use, it is still unclear whether this relationship persists beyond early adolescence and whether it is conditional on girls' body weight. This study examined the moderating role of body weight in the association between early pubertal timing and adolescent girls'…

This study tested five proposed models of the relationship of negative affect and peer factors in early adolescent body dissatisfaction, dieting, and bulimic behaviors. A large community sample of girls in early adolescence was assessed via questionnaire (X[overbar] age = 12.3 years). Structural equation modeling (SEM) indicated that negative…

Objective: Examine the relationship between self-efficacy and various measures of adiposity in a sample of teens. Methods: A total of 132 teens were selected from schools participating in an existing research study titled Teen Eating and Activity Mentoring in Schools (TEAMS). Teens completed demographic questionnaires and healthy eating-specific…

Utilizing a cross-sectional design, the authors examined associations between pubertal status, peer victimization, and their interaction in relation to weight concerns and symptoms of depression in a sample of early adolescent girls (N = 261). Multivariate analyses revealed a significant interaction between pubertal status and relational…

We used multilevel covariance structure analysis to study the relationship between birth weight, family context and youth math and reading comprehension growth from approximately ages 5 through 14 within and between families. Using data from the National Longitudinal Survey of Youth Child Sample, we examined the relationship between birth weight…

This study used the National Longitudinal Study of Adolescent Health to explore gender differences in the relationship between body perceptions and behavior and changes in adolescents' psychological well-being over a one-year time period. The sample included 12,814 adolescents (51% girls) aged 11-20 comprised of 68% Non-Hispanic White, 15% African…

Objective: To determine whether low birth weight increases the risk of attention-deficit/hyperactivity disorder (ADHD) in childhood and early adolescence. Method: In a population-based sample of 1,480 twin pairs born in the period 1985-1986 ascertained from the Swedish Twin Registry, birth weight was collected prospectively through the Medical…