Behavior Modification is the treatment of choice for Austism. Lovaas at University of California at Los Angeles does research of the subject. Koegel and Koegel do research at University of California at Santa Barbara. Also there are two great little books on the subject. Increasing Behaviors of the Severly Retarded and the Autistic and Decreasing Behaviors of the Severly Retarded and the Autistic, this is approximation of the titles for years I have refered to them as the increasing and decreasing books. The books are written by two authors, but I only remember one name, Foxx. I hope this is helpful.