Applied Behavior Analysis
Applied Behavior Analysis (ABA) is an applied science devoted to the understanding and improvement of human behavior. It is a scientific approach for discovering environmental variables that reliably influence socially significant behavior and for developing a technology of behavior change that takes practical advantage of those discoveries.
-Cooper, Herron, Heward
ABA is a scientific method, a technology, and/or a professional approach. Those who are practicing applied behavior analysis become increasingly able to successfully guide learning and performance in specific constructive directions
– G. Roy Mayer and Beth Sulzer-Azaroff