Applied Behavior Analysis (ABA) is a science dedicated to making meaningful changes in behavior. ABA involves teaching and maintaining new skills, and reducing challenging behavior that interferes with daily living. Individualized goals are identified for each child. These skills are broken down into small steps and are taught one at a time using practice and positive reinforcement. ABA uses a variety of clinically proven teaching procedures including incidental play-based instruction, discrete trial teaching, video modeling, photo and text schedules, natural environment language teaching, peer instruction, and social skills groups. As initial skills are mastered, more complex skills are addressed to build on prior success,and reinforcement systems are faded to more natural schedules.Teaching is focused on generalization of skills, to ensure each child’s achievements will transfer across different settings and people, and will be beneficial in “real world” environments. As skills are taught, data are collected to objectively monitor progress to be sure each child reaches his or her full potential. Many peer reviewed research studies have demonstrated the effectiveness of ABA for people of all ages, with different needs or diagnoses.