Applied behavior analysis (ABA) is a scientific treatment that helps people examine and alter the way they react to stimuli. Treatment begins by identifying a behavior (such as biting) that starts with a trigger (such as a guest in the home) and a replacement response (such as putting on headphones with soft music). The goal is to eliminate poor choices by offering helpful alternatives. ABA is considered a primary form of therapy for autism. It is used to reduce harmful behaviors and enhance communication. Sometimes, ABA therapists can also use their methods to teach life skills, such as brushing teeth or preparing for bed.