Edward G. Carr was an internationally recognized pioneer in autism treatment research. Dr. Carr applied studies about the functions that self-injurious behaviors served and contributed substantially to the development and refinement of "Positive Behavioral Support" (Carr et al., 2002) In addition, he assessed the benefits of teaching sign language to children with expressive and receptive language disorders as seen in children with Autism. Dr. Carr was the Director of the Research & Training Center on Positive Behavior Support for Autism & Developmental Disabilities at Stony Brook University.