Commentary: Types of bullying, types of intervention: reflections on Arseneault

Arseneault’s review is a timely reminder of the strong evidence for the negative impact of school bullying, especially although not only on the victims of it. It is particularly important in dealing with the evidence for causal links, mechanisms, and possible moderating factors. In this Commentary, I raise some issues about the definition of bullying; the importance of separating out the bully/victim category; differing impacts of types of victimization, and notably cyber victimization, perhaps interacting with gender; and evidence on school anti-bullying policies and impact of interventions.