Fred R. Volkmar is the Irving B. Harris Professor of Child Psychiatry, Pediatrics, and Psychology at the Child Study Center, Yale University School of Medicine. An international authority on Asperger’s disorder and autism, Dr. Volkmar was the primary author of the DSM-IV autism and pervasive developmental disorders section. He has authored several hundred scientific papers and has co-edited numerous books, including Asperger Syndrome, the fourth edition of The Handbook of Autism and Pervasive Developmental Disorders, A Practical Guide for Autism: What Every Parent, Family Member, and Teacher Should Know, Evidence-Based Practices and Treatments for Children with Autism and Adolescents, and Adults with Autism Spectrum Disorders. He is also the Editor of the five-volume Encyclopedia of Autism Spectrum Disorders, published by Springer.