The majority of research on the link between video games and aggression has focused on the violent content in games. In contrast, recent experimental research suggests that it is video game competition, not violence, that has the greatest effect on aggression in the short-term. However, no researchers have examined the long-term relationship…

This study identified classes of developmental trajectories of physical dating violence victimization from grades 8 to 12 and examined theoretically-based risk factors that distinguished among trajectory classes. Data were from a multi-wave longitudinal study spanning 8th through 12th grade (n = 2,566; 51.9 % female). Growth mixture models were…

Recently, researchers have devoted greater attention to understanding how disagreement between mothers and their children regarding parent-child relationship quality and functioning impacts youth adjustment. While some view discrepancies as indices of developmentally appropriate individuation, discrepancies regarding family functioning also have…

Although adolescents often participate in multiple extracurricular activities, little research has examined how the breadth of activities in which an adolescent is involved relates to school-related affect and academic performance. Relying on a large, multi-ethnic sample (N = 864; 55.9% female), the current study investigated linear and non-linear…

While many adolescents and young adults experiment with substances (e.g., alcohol, cigarette smoking, marijuana), recent research suggests that rural youth and young adults may be more at risk for substance use than their urban counterparts. This study was designed to examine the longitudinal relationships between rural adolescents' prosocial…

Little is known about the adolescent risk factors and young adult health-related outcomes associated with running away from home. We examined these correlates of running away using longitudinal data from 4,329 youth (48% female, 85% white) who were followed from Grade 9 to age 21. Nearly 14% of the sample reported running away in the past year at…

The purpose of this study was to explore individual- and school-level policy characteristics on student smoking behavior using an ecological perspective. Participants were 24,213 (51% female) Grade 10-11 students from 81 schools in five Canadian provinces. Data were collected using student self-report surveys, written policies collected from…

This study used a 2-month prospective research design to examine the bi-directional interplay between peer victimization and social anxiety among adolescents. Participants included 228 adolescents (58% female) in grades 10-12. Three types of peer victimization were examined: "overt" (physical aggression or verbal threats), "relational" (malicious…

This study used hierarchical linear modeling to compare longitudinal patterns of adolescent religious service attendance and club attendance, and to contrast the longitudinal relations between adolescent adjustment and religious service versus club attendance. Participants included 1050 students (47% girls) encompassing a school district in…

While in western countries, such as the US and Europe, authoritarian parenting is associated with negative psycho-social outcomes. Studies have indicated that this is not the case in collective/authoritarian cultures. It has been hypothesized that inconsistency in parenting style and culture contributes to these negative outcomes. In this study a…

This study examines the relationship between having other-sex versus same-sex best friends and antisocial behavior throughout early adolescence. Participants (N = 955) were recruited in 6th grade and followed longitudinally through 7th, 8th, and 11th grades. Participants were 58% ethnically diverse youth and 48% girls. Results indicate that the…

The authors evaluated emotional distress among 9th-12th grade students, and examined whether the association between being lesbian, gay, bisexual, and/or transgendered (i.e., "LGBT") and emotional distress was mediated by perceptions of having been treated badly or discriminated against because others thought they were gay or lesbian.…

The present study examines how exposure to relational aggression at school is associated with adolescents' perceptions of, and participation in, a hostile school environment. Participants were 1,335 African American and European American adolescents in grades 7 through 12 (52% female, 49% African American). Results indicate that exposure to…

Self esteem is found to be significantly related to feelings toward parents and peers in grade 8 and 11 subjects. If a developmental shift in the relationship between self esteem and feelings toward friends occurs, it does so slowly, showing only a slight beginning by the 11th grade. (Author/DEP)

A Modified form of Sigel's Styles of Categorization Tests discriminated group and individual categorization preferences in 5th, 8th, and 11th graders consistent with the expectations of developmental theory and research for these age groups. (Author/DEP)