Applied Behavior Analysis (ABA) is a science in which procedures are systematically applied to improve socially significant behavior to a meaningful degree.  An ABA program is a systematic teaching approach that involves breaking skills down into small, easy-to-learn steps.  Praise or other rewards are used to motivate the child, and progress is continuously measured so the teaching program can be adjusted as needed.  ABA is widely recognized as a highly effective treatment with substantial, lasting improvements in the lives of individuals with autism spectrum disorder.