This article presents a systematic review and meta-analysis of the effectiveness of anti-
bullying programs in schools. Studies were included if they evaluated the effects of an anti …

It is often stated that bullying is a “group process”, and many researchers and policymakers
share the belief that interventions against bullying should be targeted at the peer-group level …

This article presents findings from a meta‐analysis of 213 school‐based, universal social
and emotional learning (SEL) programs involving 270,034 kindergarten through high school …

Previous research has shown that many school-based anti-bullying programs are effective.
A prior meta-analysis (Gaffney, Ttofi, & Farrington, 2019) found that intervention programs …

This meta-analysis synthesized bullying prevention programs' effectiveness at increasing
bystander intervention in bullying situations. Evidence from 12 school-based programs …

Executive Summary/Abstract Background Bullying first emerged as an important topic of
research in the 1980s in Norway (Olweus), and a recent meta‐analysis shows that these …

This study investigated whether the bystanders' behaviors (reinforcing the bully vs.
defending the victim) in bullying situations are related to the frequency of bullying in a …

Research on effectiveness of school bullying interventions has lagged behind descriptive
studies on this topic. The literature on bullying intervention research has only recently …

Bullying is becoming an ever more pressing issue for schools, daycare centers, politicians
and the public. Everyone agrees that bullying is a serious problem and initiatives are …

Objective To conduct a systematic review of rigorously evaluated school-based interventions
to decrease bullying. Data Sources MEDLINE, PsycINFO, EMBASE, Educational Resources …