Program Information Proof Positive ABA Therapies is an experienced organization of qualified therapists providing effective treatment for children with Autism, Asperger's Syndrome, Rett's Disorder, PDD-NOS and related disorders in the Orange County and Los Angeles area. Our services are based on the principles of Applied Behavior Analysis (ABA). ABA is the most widely researched and scientifically validated method known for treating Autism. Our goal is to develop an individualized treatment plan designed specifically for your child while providing parent education. We work with your child to teach appropriate language, self-help skills, behaviors and social skills while using a family-focused approach.