Although school-based programs are effective at decreasing bullying, the majority of studies have been conducted with elementary and middle school students. We conducted a pilot study using a randomized controlled design investigating the social validity of a brief, bullying bystander program adapted to be age-appropriate for high school students…

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…

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…

A randomized controlled study evaluated a brief, bystander bullying intervention for junior high school students. Students in both groups reported an increase in knowledge and confidence to act as defenders and to utilize strategies to intervene on behalf of victims of bullying. Findings suggest possible carry-over effects from the intervention…