1. The authors are with Providence Veterans Administration Hospital, Davis Park, Providence, R.I. 02908, where Dr. Brown is Director of the Neuroendocrine Research Laboratory, Dr. Johnston is Director of the Day Hospital, and Dr. Mayfield is Chief of the Psychiatry Service. Dr. Brown is also Associate Professor of Psychiatry, Brown University, Providence, R.I., where Dr. Johnston is Assistant Professor of Psychiatry and Dr. Mayfield is Professor of Psychiatry.