ROBERT T. AMMERMAN, PhD, is Professor of Pediatrics at the University of Cincinnati and Staff Psychologist at the Children's Hospital Medical Center in Cincinnati. He has authored more than seventy-five papers and book chapters. Dr. Ammerman is also a Diplomate in Behavioral Psychology of the American Board of Professional Psychology.
MICHEL HERSEN, PhD, is Professor and Dean of the School of Professional Psychology at Pacific University. He has authored and edited numerous books, journals, and articles in the field of assessment.