 Sixteen of these programs have been tested at least twice with replicated findings and have been designated as "Blueprint model programs", which, if rigorously followed, will significantly reduce youth violence and substance abuse.Programs range from prenatal (for example, Olds, 1997) and early childhood interventions (for example, Reid et al., 2001), to community policies related to alcohol (e.g.Holder et al., 2000), to school-based curricula that teach youth social and emotional skills that will help them navigate life (e.g.