This briefing for advocates, programme designers and implementers and others is one of a seven-part series on the evidence for interventions to prevent interpersonal and self-directed violence. The other six briefings look at reducing access to lethal means; increasing safe, stable and nurturing relationships between children and their parents and caregivers; developing life skills in children and adolescents; reducing availability and misuse of alcohol; promoting gender equality; and victim identification, care and support.