Bill Ahearn currently serves as the Director of Research of The New England Center for Children. He is also a Clinical Assistant Professor in Northeastern University’s graduate program in Applied Behavior Analysis and Adjunct Faculty in Western New England University’s doctoral program. Bill was named the 2009 American Psychological Association – Division 25 awardee for Enduring Contributions to Applied Behavioral Research. Bill is the ACE® coordinator for providing BCBA continuing education at NECC® and for the Berkshire Association for Behavior Analysis and Therapy. He also serves on the Autism Advisory Committees for the Association of Professional Behavior Analysts and the Cambridge Center for Behavioral Studies. 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.