1. Peggy T. Ackerman, MA, is a research associate in the Department of Psychiatry and Behavioral Sciences, University of Arkansas for Medical Sciences.
2. Roscoe A. Dykman, PhD, is Distinguished Professor in the same department and director of the Behavioral Laboratory.
3. Michelle Y. Gardner, BA, is a research assistant in the Behavioral Laboratory. Address: Peggy T. Ackerman, Slot 558, University of Arkansas for Medical Sciences, 4301 West Markham, Little Rock, AR 72205.