Applied behavior analysis is a natural science approach to understanding behavior; ABA is the use of behavior analytic methods and research findings to change socially important behaviors in meaningful ways. Autism is only one of many areas in which behavior analysis has been applied successfully. ABA is a methodology used to optimize the learning environment for children with autism spectrum disorders. The main purpose is to teach children how to learn. Behavioral training teaches people of all ages with autism how to communicate appropriately. This type of training can reduce behavior problems and improve adaptation skills.