Edward G. Carr, Ph.D., was Professor of Psychology at the State University of New York at Stony Brook, and a research scientist at the Developmental Disabilities Institute on Long island, New York. He worked in the field of developmental disabilities for over 25 years and contributed over 100 publications to the professional literature, primarily in the areas of problem behavior and communication. Dr. Carr lectured extensively and gave workshops throughout the U.S., Canada, and Europe. He served on the editorial boards of 12 journals in the field of developmental disabilities and behavior anal...