Ken Winters, Ph.D., is the director of the Center for Adolescent Substance Abuse Research and a Professor in the Department of Psychiatry at the University of Minnesota.  He has published several assessment tools and numerous articles about adolescent substance abuse.  Dr. Winters is on the Editorial Board of the Journal of Child and Adolescent Substance Abuse, and is a consultant to many organizations including the National Institute on Drug Abuse, the Center for Substance Abuse Treatment and the World Health Organization.  His previous experience includes appointments as a psychology research scientist at State University of New York in Stony Brook and a staff psychologist at a community mental health center.