1. Roscoe A. Dykman, PhD, is emeritus professor and director of the Psychophysiology Laboratory, Center for Ambulatory Research and Education, Department of Pediatrics, Arkansas Children's Hospital.
2. Peggy T. Ackerman, MA, is a research associate in the Departments of Psychiatry and Pediatrics, University of Arkansas for Medical Sciences. Address: Roscoe A. Dykman, CARE Unit, Department of Pediatrics, Arkansas Children's Hospital, 800 Marshall St., Little Rock, AR 72202-3591.