Bill Ahearn, Ph.D., BCBA-D, joined The New England Center for Children in August 1996, and currently serves at NECC as the Director of Research. He is also a Clinical Assistant Professor in Northeastern University's Master's program in Applied Behavior Analysis and Adjunct Faculty in Western New England College's doctoral program. Bill was named the 2009 American Psychological Association - Division 25 awardee for Enduring Contributions to Applied Behavioral Research. He also serves on the Autism Advisory Committees for the Association of Professional Behavior Analysts, the Cambridge Center for Behavioral Studies, and is Past President of the Berkshire Association for Behavior Analysis and Therapy. Bill's research interests include social skills in children with autism, verbal behavior, assessment and treatment of stereotypy, severe problem behavior, and pediatric feeding difficulties. He is also interested in resistance to change, behavioral economics, and conditioned reinforcement. His work has been published in the Journal of Applied Behavior Analysis, Journal of the Experimental Analysis of Behavior, Behavioral Interventions, Behavior Modification, The Lancet, Journal of Autism and Developmental Disorders and has written book chapters on teaching children with autism and pediatric feeding problems in children with autism. Bill is currently on the Editorial Boards for the Journal of Applied Behavior Analysis, The Analysis of Verbal Behavior, and Behavioral Interventions and has served as a guest reviewer for several other journals. He has also received grant funding through NIH and the Organization for Autism Research.