1. Dr. Curtis is Professor and Dr. Nesse is Instructor, Department of Psychiatry, Neuropsychiatric Institute, University of Michigan, Ann Arbor, Mich. 48109. Dr. Buxton is Clinical Associate Professor, Department of Psychiatry, Medical College of New Jersey, Newark, N.J. Dr. Lippman is Instructor, Department of Psychiatry, University of Toronto, Toronto, Ont., Canada.