The prevalence of bullying worldwide is high (UNESCO, 2018). Over the past decades, many anti-bullying interventions have been developed to remediate this problem. However, we lack insight into for whom these interventions work and what individual intervention components drive the total intervention effects. We conducted a large-scale individual…

This study synthesized 14 published and unpublished group design and single-case design studies on bullying interventions for individuals with disabilities. The specific objectives were to examine the general characteristics and design qualities of the studies, quantify the magnitude of the intervention effects, and identify potential moderating…

Student bullying behaviours are a significant social issue in schools worldwide. Whilst school staff have access to quality bullying prevention interventions, schools can face significant challenges implementing the whole-school approach required to address the complexity of these behaviours. This study aimed to understand how schools' capacity to…

This study examined the efficacy of a brief, bystander bullying intervention (STAC) among high school students using a randomized controlled design. Results indicate that intervention students reported significantly greater reductions in bullying victimization at a 30-day follow-up compared to control students. At 3 months, although the…

Bullying is a prevalent problem in schools and is linked to negative mental health and academic outcomes. Latinx youth, specifically, may experience higher rates of bullying and depression than their non-Latinx peers. Considering that bullying often occurs in front of peers, bystander intervention can be an effective way to reduce bullying at…

To date, little has been known about teachers' success in bullying interventions. Thus, the present study analyzes how successfully teachers intervene in real bullying situations, based on an analysis of 1,996 reports by German students aged between 12 and 15 (49.2% female) from 24 schools. Predictors of success included intervention strategy…

Although most teachers realize the seriousness of bullying and try to intervene, some take a passive stance, while others take active action. The present study examined individual and environmental factors that make teachers either passive or active interveners. Self-reported questionnaires were collected from 200 middle school teachers in South…

Teacher intervention is an important factor in stopping bullying. Several studies indicate that teachers who believe they are capable of stopping bullying intervene more often in bullying. But this finding has only been based on hypothetical situations. It remains unclear if these results can be replicated in bullying interventions that the…

The purpose of this study was to evaluate the efficacy of a brief, bystander bullying intervention on reducing internalizing symptoms among students (N = 65). Although witnessing bullying is associated with mental health risks, the majority of research on bystander interventions focuses on the impact of these programs on school-wide bullying…

This study examined the associations between bullying victimization and mental health and academic performance outcomes. This study also examined the indirect effect of academic performance on the association between bullying victimization and mental health. Participants included 676 secondary school students from the Southeast region of the USA.…

In extending the understanding of how school bullying impacts student learning, this research explored the relationships among school bullying, students' sense of belonging at school and academic performance in science, maths and reading. Data analysis was conducted using Beijing, Shanghai, Jiangsu and Guangdong (China) data of the 2015 Programme…

Dan Olweus pioneered research on school bullying and identified the importance of, and risk factors associated with, bullying and victimization. In this paper, we conduct a narrative review of the critical notion of power within bullying. Specifically, we discuss Olweus's definition of bullying and the role of a power imbalance in distinguishing…

Anti-bullying interventions often assume that knowing how it feels to be bullied increases empathy for victims. However, longitudinal research on actual experiences of bullying and empathy is lacking. This study investigated whether within-person changes in victimization predicted changes in empathy over 1 year using random-intercept cross-lagged…

Adolescent bullying is a concern for adolescents, parents, teachers, school officials, and the general public. The purpose of the study is to apply Bronfenbrenner's ecological systems perspective and explore factors that are correlated with bullying perpetration and victimization among 638 urban African American adolescents in Chicago's Southside.…

We evaluated a brief, bystander bullying intervention (STAC) adapted for ethnically blended, low-income middle schools. We examined changes in bullying victimization and bias-based bullying victimization among a sample of sixth-grade students using a mixed factorial design. Students reported a significant decrease in bullying victimization and…