Prevention programmes shown to be effective or to have promise in reducing youth violence include life skills and social development programmes designed to help children and adolescents manage anger, resolve conflict, and develop the necessary social skills to solve problems; schools-based anti-bullying prevention programmes; and programmes to reduce access to alcohol, illegal drugs and guns. Also, given significant neighbourhood effects on youth violence, interventions involving relocating families to less poor environments have shown promising results. Similarly, urban renewal projects such as business improvement districts have shown a reduction in youth violence.