As researchers and practitioners begin to take a bystander approach toward preventing bullying, which involves a power imbalance between two students, it is important to acknowledge that predictors of bystander intervention may look different in various groups of students. Though school connectedness has been suggested as a predictor, previous…

The Bystander Intervention Model proposed by social psychologists Latané and Darley has been used to examine the actions of peer bystanders in bullying. The five-stage model consists of notice the event, interpret event as an emergency, accept responsibility for intervening, know how to intervene, and implement intervention decisions. The current…

Bullying victimisation is a reality in most schools around the world, with thousands of students being victimised on a daily basis. Given the prevalence of bullying victimisation at school, examination of what might prompt or prevent such behaviours is required. Therefore, this study examined the relationship of a number of individual and…

Investigators have identified a number of factors that increase risk for physical and psychological dating abuse perpetration during adolescence, but as yet little is known about the etiology of sexual dating aggression during this critical developmental period. This is an important gap in the literature given that research suggests that patterns…

The identification of developmentally specific windows at which key predictors of adolescent substance use are most influential is a crucial task for informing the design of appropriately targeted substance use prevention and intervention programs. The current study examined effects of conduct problems and depressive symptomatology on changes in…

Background: Self-injury has been described as a "silent school crisis," reflecting insufficient knowledge, confusion, lack of effective interventions, and the tendency for adults and youth to shy away from dealing directly with the issue. This purpose of this study was to identify distinct subgroups of youth who may be at increased risk…

Given the frequent comorbidity of anxiety and depression, it is important to study the effects of depression interventions on anxiety and the impact of comorbid anxiety on depression outcomes. This article reports on pooled anxiety and depression data from two randomized trials of Interpersonal Psychotherapy-Adolescent Skills Training (IPT-AST), a…

This study examined the Response Styles Theory in a large, racially and ethnically diverse sample (N = 722) of 6th, 7th, and 8th graders. We examined the role of response styles (rumination, distraction, and problem-solving) as predictors of changes in depressive symptoms over a seven-month period. Higher levels of rumination and lower levels of…

The current study examined the relations among self-esteem, approving normative beliefs about bullying, school climate, and bullying perpetration using a large, longitudinal sample of children from elementary, middle, and high school. Self-report surveys were collected at two points in time over the course of 1 year from 7,299 ethnically diverse…

Monitoring the Future (MTF) is a long-term study of American adolescents, college students, and adults through age 50. It has been conducted annually by the University of Michigan's Institute for Social Research since its inception in 1975. It is supported under a series of investigator-initiated, competing research grants from the National…

There is evidence to suggest that the effects of behavioral interventions may be limited to specific types of individuals, but methods for evaluating such outcomes have not been fully developed. This study proposes the use of finite mixture models to evaluate whether interventions, and, specifically, group randomized trials, impact participants…

The Monitoring the Future (MTF) study is an ongoing series of national surveys of American adolescents and adults that has provided the nation with a vital window into the important, but largely hidden, problem behaviors of illegal drug use, alcohol use, tobacco use, anabolic steroid use, and psychotherapeutic drug use. For more than a third of…

Despite the success of many drug and alcohol prevention programs, drug and alcohol use by adolescents continues to be a problem. One important factor in preventing drug and alcohol use may be determining, in a non-intrusive manner, which students are most at risk for drug involvement. In the present study, the predictive relationship between…

This paper examines school policies relating to alcohol and illicit drug use, and their associations with the prevalence of alcohol and marijuana use among students. Both "punitive" and "supportive" policies are examined. Other studies examining punitive disciplinary measures--such as close monitoring of student behavior, having various security…