Anthony Biglan, PhD, is Senior Scientist at Oregon Research Institute, where he conducts research on the prevention of child and adolescent problem behavior and on the childrearing practices that affect child and adolescent development. His current work focuses on contextual analyses of childrearing practices in communities. Patricia A. Brennan, PhD, is on the faculty of the Department of Psychology at Emory University. Her research interests include the study of etiological factors of aggression and violence from a biological perspective, and parental psychopathology (depression/schizophr...