Rolf Loeber is a Distinguished Professor of Psychiatry and Professor of Psychology and Epidemiology at the University of Pittsburgh. He currently serves as Co-director of the Life History Program and is Principal Investigator of two longitudinal studies: the Pittsburgh Youth Study, and the Pittsburgh Girls Study. He has published widely in the fields of juvenile antisocial behavior and delinquency, substance use, and mental health problems. He has published over 250 scientific papers and 12 books to date. Rolf’s interests are in how and why young people develop serious problems in their lives, including serious delinquency, mental problems, and drug problems.