George T. Grossberg, M.D., is the Samuel W. Fordyce Professor and Director of Geriatric Psychiatry at St Louis University School of Medicine. He has edited five textbooks and contributed more than 250 chapters, abstracts, and papers to the psychogeriatric literature. Grossberg is also a past president of AAGP and president elect of the IPA. Lissy Jarvik, M.D., Ph. D., is Professor Emerita of Psychiatry and Biobehavioral Sciences at UCLA School of Medicine and Distinguished Physician Emeritus with the U.S. Department of Veterans Affairs of the Greater Los Angeles Healthcare System. Her publications number more than 300. Barnett S. Meyers, M.D., is Professor of Psychiatry at the Weill Medical College of Cornell University and Professor in the Program of Clinical Epidemiology and Health Services at the Weill Graduate School of Medical Sciences of Cornell University. Dr. Meyers is also a past-president of the American Association for Geriatric Psychiatry and author of more than 150 scientific articles and book chapters. Joel Sadavoy, M.D., FRCP (C), is Professor of Psychiatry at the University of Toronto, as well as Psychiatrist in Chief and inaugural Pencer Chair in Applied General Psychiatry at Mount Sinai Hospital in Toronto. He has published widely in journals, his own books and in most standard textbooks in the field.