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…

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…

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…

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,…

In Vietnam, school violence is a serious problem; yet, little is known about the factors explaining this phenomenon. The current study looked at the role of normative beliefs approving aggression in the development of overt aggressive behavior. Using a short-term longitudinal design with three waves (4-month interval), this study examined the…

Developmental trajectories of bullying perpetration were examined across 5 waves of longitudinal panel data among Midwestern middle school students. This study explained an unobserved heterogeneity of subgroups, each having the similar pattern of trajectories and investigated antecedents and consequences of class membership. Growth-mixture…

Early life adversity influences the diurnal cortisol rhythm, yet the relative influence of different characteristics of adversity remains unknown. In this study, we examine how developmental timing (childhood vs. adolescence), severity (major vs. minor), and domain of early life adversity relate to diurnal cortisol rhythms in late adolescence. We…

School security measures have become commonplace in recent years. Still, little quantitative research has examined how this trend shapes students' perceptions of school. This study examines how students' exposure to school security relates to their sense of school connectedness, with particular attention to the difference between white and…

The aims of the current study were to provide the first Australian prevalence estimates of sexual harassment in adolescents, explore gender differences in form and frequency of harassment, and investigate demographic and weight status correlates. A total of 4098 adolescents (47.3% boys), aged 11 to 19 years from government and non-government…

A growing body of empirical research on teacher victimization indicates that it is widespread and yields negative consequences. However, limited research has investigated the relationship between teacher victimization and turnover. In this study, using longitudinal data from approximately 1,300 teachers in a metropolitan area in Texas, USA, we…

Witnessing violence can negatively affect students' outcomes, but their friendships may mitigate those effects. This study investigated the extent to which seeing someone shot in the last year related to seven school-related outcomes. Additionally, it examined the extent to which prosocial and deviant friends moderate these relationships. This…

Zero tolerance, punitive, and more negative peace-oriented approaches dominate school violence interventions, despite research indicating that comprehensive approaches are more sustainable. In this article, I use data from a longitudinal case study at a Trinidadian secondary school to focus on the role of teachers and their impact on school…

Victimization and problem behaviors during middle school detrimentally influence student learning. However, less is known about how they may cooccur and collectively affect high school graduation and whether the interrelationships vary by gender. Using data from a nationally representative cohort of seventh-grade students from the National…