K. Warner Schaie is the Evan Pugh Professor of Human Development and Psychology and Director of the Gerontology Center at the Pennsylvania State University. He also holds an appointment as Affiliate Professor of Psychiatry and Behavioral Science at the University of Washington. A fellow of the Gerontological Society and the American Psychological Association, Professor Schaie has served as president of the APA Division of Adult Development and Aging and as editor of the Journal of Gerontology: Psychological Sciences. Author of over 250 scholarly publications on the psychology of aging, Dr. Schaie has interests including the life course of adult intelligence, its antecedents and modifiability, and methodological issues in the developmental sciences. Dr. Schaie has received the Kleemeier Award for Distinguished Research Contributions from the Gerontological Society of America and the Distinguished Scientific Contributions Award from the American Psychological Association.