%0 Journal Article %T The impact of a brief, bullying bystander intervention on internalizing symptoms: Is gender a moderator of intervention effects? %A Aida Midgett %A April D. Watts %A Diana M. Doumas %J School Psychology International %@ 1461-7374 %D 2019 %R 10.1177/0143034319830149 %X 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 reduction rather than improved emotional outcomes for those trained to intervene. Results indicated high school students trained in a brief, bystander bullying intervention reported greater decreases in internalizing symptoms from baseline to a three-month follow-up compared to students in a control group. Further, gender moderated intervention effects such that differences in decreases in internalizing symptoms were significant for females only. Implications for school-based anti-bullying programs for high school students are discussed %K bullying %K bystander %K high school %K internalizing symptoms %K STAC %U https://journals.sagepub.com/doi/full/10.1177/0143034319830149