Applied Behavior Analysis (ABA) is a scientific approach used to understand and improve behavior. It focuses on the principles of behaviorism, which emphasize the relationship between behavior and the environment. ABA techniques are often used to teach new skills, reduce unwanted behaviors, and promote positive changes in various settings, including schools and homes. ABA is commonly used with individuals with autism spectrum disorder (ASD) to help them develop communication, social, and daily living skills. By using reinforcement strategies, therapists can encourage desired behaviors and discourage those that are harmful or disruptive, leading to improved quality of life for individuals and their families.