School bullying is a clear violation of children's rights to a safe education and is a major concern among school professionals and parents. Many antibullying interventions focus on enhancing peer defending of victims to combat bullying and to promote victims' psychosocial functioning. However, longitudinal studies on the effects of being defended on (a) diminishing victimization and (b) enhancing victims' psychosocial adjustment are lacking, and the role of the broader peer context has been largely unexplored. Therefore, this study examined whether being defended decreases victimization and improves victims' psychosocial adjustment, and whether defending peer norms moderate these effects. Data were derived from a nationwide Dutch study on the effectiveness of antibullying interventions, with N = 5,415 students (M age = 9.93; 48.3% girls) from 238 classrooms (54.2% control classrooms) in 68 elementary schools. Findings indicate that victims with at least one defender at the start of the school year (Time 1) experienced higher feelings of belonging at the end of the school year (Time 2) compared with nondefended victims, but experienced lower feelings of belonging compared with nonvictims. Defended victims did not differ from nondefended victims in self-esteem, depressive symptoms, and severity of victimization at Time 2. Nonvictims were significantly better adjusted than defended and nondefended victims regarding these outcomes. Descriptive and popularity norms for defending did not moderate the links between being defended and victims' adjustment and severity of victimization at Time 2. Thus, being defended only partly relieves victims' plight, irrespective of how normative defending behaviors are in classrooms.
Educational Impact and Implications StatementBullying is a pervasive problem among school-aged youth, with disastrous effects on victims' psychosocial functioning. The recognition that bullying is a group process has led many interventions to promote peer defending (e.g., standing up against bullies, consoling victims) in the hope that it stops bullying and improves victims' psychosocial adjustment. But does being defended actually help victims? The current study indicates that being defended only partly relieves victims' plight by increasing their feelings of belongingness to the peer group. Being defended did not reduce victimization and depressive feelings, nor promoted victims' selfesteem. Thus, the beneficial effects of being defended may be more limited than currently assumed, and more research is needed on whether and how the effectiveness of peer defending can be increased.