Nancy L. Mace, M.A., now retired, was a consultant to, and a member of, the board of directors of the Alzheimer Association and an assistant in psychiatry as coordinator of the T. Rowe and Eleanor Price Teaching Service of the Department of Psychiatry and Behavioral Sciences at the Johns Hopkins University School of Medicine. Peter V. Rabins, M.D.

, M.P.H., is a professor of psychiatry, with joint appointments in medicine, mental hygiene and health policy and management, director of the geriatric neuropsychiatry section, and director of the T. Rowe and Eleanor Price Teaching Service of the Department of Psychiatry and Behavioral Sciences at the Johns Hopkins University School of Medicine. PROFESSIONAL ENDORSMENT: THE 36-HOUR DAY is endorsed by the Alzheimer Disease And Related Disorders Association Of America.