- The common name for this theory is behaviorism. Key theorists include John Watson and B.F. Skinner. - Learning is influenced by external stimuli in the environment and responses to those stimuli. The role of the teacher is to use reinforcement and punishment to shape desirable behaviors. The role of the student is to respond to environmental stimuli. - Behaviorism best explains observable and measurable types of learning involving changes in behavior. Basic strategies include positive reinforcement, negative reinforcement, positive punishment, and negative punishment. - Strengths include being highly empirical and measurable, weaknesses include inability to explain internal mental processes. Implications for education include a focus on observable behaviors and using reinforcement to modify student behaviors.