Peer victimization in schools most often occurs in the presence of bystanders. When bystanders intervene on behalf of the victims, they are often successful in stopping the victimization. Defender self-efficacy (i.e., the belief in one's ability to successfully defend victims) has consistently been associated with greater defending and less…

Background: Addressing school violence is an important public health goal. To assess the role of school mental health curricula in violence prevention, we evaluated effects of an anti-stigma curriculum on violence victimization/perpetration. Methods: An ethnically/socioeconomically diverse sample of 751 sixth-graders (mean age 11.5 years) across…

This study examined beliefs about aggression and self-efficacy for nonviolent responses as mediators of longitudinal relations between exposure to violence and physical aggression. Participants were a predominantly African American (79%) sample of 2705 early adolescents from three middle schools within urban neighborhoods with high rates of…

To identify factors in adolescence that predict the onset of sexual violence in adolescence and young adulthood. Data were analyzed from six survey waves of the longitudinal Growing up with Media Study (2008-2018) conducted in the USA. Participants were 778 youth 13-18 years old at baseline, who completed online surveys assessing sexual violence…

The cognitive functioning of children who experience intimate partner violence (IPV) has received less attention than their emotional-behavioral outcomes. Drawing upon data from 615 (48.4% female) 10-year-old Australian-born children and their mothers (9.6% of mothers born in non-English speaking countries) participating in a community-based…

Urban adolescents experience high rates of exposure to community violence, which is associated with sleep problems. However, less is known about the prospective relationships between community violence exposure and sleep problems across adolescence. This study investigated reciprocal relationships between community violence exposure and sleep…

Assessing change in campus interpersonal violence over time is an important step to understand the nature and prevalence of students' victimization experiences. Using a repeated cross-sectional campus survey of interpersonal violence from a large southern university, this article tracks the change of students' victimization experiences over a…

Research finds that vicarious strain significantly predicts juvenile delinquency. However, no studies have examined the influence of vicarious health strain on youth behavior despite the fact that when individuals directly experience poor health, there is a greater likelihood of crime and delinquency. Using a sample of youth from the Project on…

We examined bullying victimization spanning from before the pandemic to the two school years post COVID-19 onset in adolescents. We used survey data from Canadian secondary school students collected during the 2019-20, 2020-21, and 2021-22 academic years. Generalized Estimating Equations models were used to estimate the population average odds of…

Although dating violence poses a serious threat to adolescents' health and well-being around the globe, little evidence is available for Europe in general and Switzerland in particular. Also, evidence on the role of cognitive predictors related to a more general justification of aggressive behavior and gender-based violence is lacking. Therefore,…

Identifying developmental patterns in intergroup contact and its relation with bias is crucial for improving prevention strategies around intergroup relations. This study applied time-varying effects modeling (TVEM) to examine age-based changes in relations between contact and bias in a divided community that included 667 youth (M age = 15.74, SD…

Within the social imaginary of Australia's dominant 'White' culture, ethnic minority men, particularly Muslim men, are often depicted as 'folk devils,' resistant to the cultural norms of mainstream society. Muslim masculinities have been problematically conflated with notions of radicalisation, terrorism and violent extremism. There has been…

The practice of temporarily removing students from school as a form of punishment (i.e., suspensions) remains quite common. This study uses longitudinal data from a large, urban school district in California to assess whether the use of suspensions improves school safety in the following school year. Additional analyses by student race and…

Social network analysis (SNA) consists of a broad set of frameworks and methods to assess how direct and indirect relationships influence individual functioning. Although interest in SNA has steadily increased in the psychological sciences, school psychology has not kept pace. This article provides a general overview of core SNA concepts,…

Adverse childhood experiences (ACEs) have been identified as a key risk factor for a variety of negative health, psychiatric, and behavioral outcomes across the life course. Although recent research has begun to consider the role of ACEs in criminogenic behaviors among youth, few studies to date have assessed the association between early exposure…