Johnny L. Matson, Ph.D., is Professor and Distinguished Research Master (retired) in the Department of Psychology at Louisiana State University-Baton Rouge. Previously, he was Professor of Psychiatry at the University of Pittsburgh School of Medicine. He has served as major professor for 72 doctoral candidates and is the author of more than 900 publications, including 54 books. Dr. Matson is the founding editor of the Review Journal of Autism and Developmental Disorders.