The document discusses the theory of behaviorism in psychology. It describes the work of pioneering behaviorists Ivan Pavlov, B.F. Skinner, and Albert Bandura. Pavlov studied classical conditioning, Skinner researched operant conditioning using positive reinforcement, and Bandura contributed the concept of observational learning. The key implications for teachers are to use modeling, reinforcement of desired behaviors, and punishment of undesired behaviors to shape student learning according to behaviorist principles.