1. ADRIAN ANGOLD, MRCPsych, is an assistant professor of child psychiatry and co-director of the Developmental Epidemiology Program in the Department of Psychiatry and Behavioral Sciences at Duke University Medical Center. His research interests include diagnostic comorbidity, the effects of puberty on psychopathology, and mental health service use. Address: Adrian Angold, DUMC Box 3454, Durham, NC 27710.
2. ALAATTIN ERKANLI, PhD, is a faculty member and statistician in the Department of Psychiatry and Behavioral Sciences at Duke University Medical Center. His research focus is analysis of multistage study data.
3. ROLF LOEBER, PhD, is co-director of the Life History Studies Program at the Western Psychiatric Institute and Clinic at the University of Pittsburgh in Pennsylvania.
4. E. JANE COSTELLO, PhD, is an associate professor of medical psychology in the Department of Psychiatry and Behavioral Sciences and co-director of the Developmental Epidemiology Program at Duke University.
5. WELMOET BOK VAN KAMMEN, PhD, is program director for the Pittsburgh Youth Study at the University of Pittsburgh. Her research interests include relapse prediction in schizophrenia, psychological sequelae of war-related stress, and substance use in children and adolescents.
6. MAGDA STOUTHAMER-LOEBER, PhD, is co-director of the Life History Studies Program at the Western Psychiatric Institute and Clinic and an associate professor of psychiatry and psychology at the University of Pittsburgh. Her research interest is in the area of conducting high-quality research on the development of antisocial behavior.