Prospective longitudinal data from over 14,000 youth residing in 28 communities in the rural United States were analyzed to examine the emergence of mixed-sex friendship groups in early adolescence. Youth were surveyed on 5 occasions between fall of 6th grade and spring of 9th grade. At each assessment, youth reported the names of up to 7…

Parental knowledge is defined as parental awareness and information about a child's activities, whereabouts, and associations that is obtained through parental monitoring, parental solicitation, or self-disclosure. Increased parental knowledge is generally associated with lower adolescent substance use; however, the influence of various contextual…

This study estimates the individual and combined effects of selected family, student and school characteristics on the academic achievement of poor, urban primary-school students in the Turkish context. Participants of the study consisted of 719 sixth, seventh, and eighth grade primary-school students from 23 schools in inner and outer city…

This study was conducted to identify student characteristics and instructional factors that impact student engagement in physical education (PE). Data were derived from the systematic observation of 124 sessions taught by 31 physical educators and the administration of health and PE engagement questionnaires to 2,018 students in grades 5-8.…

A sample of 118 U.S. 6th and 7th graders was used to examine early adolescents' views of whether video games negatively influence themselves, others of the same age, and younger others. Six specific games ranging in rating from E for Everyone to M for Mature were listed for the early adolescents to respond to, with questions asked about both…

A sense of mastery is an important component of psychological health and wellbeing across the life-span; however, relatively little is known about the development of mastery during childhood and adolescence. Utilizing prospective, longitudinal data from 444 adolescent sibling pairs and their parents, our conceptual model proposes that family…

This study examined how boys' and girls' weight preoccupation varied by grade level, parent-child relationships, self-classified weight, entertainment media exposure levels, and gender. Seventh-grade girls (n = 190) and boys (n = 132) and 10th-grade girls (n = 99) and boys (n = 67) participated. Girls were more likely to report weight…