This document discusses behaviorism and how learning affects behavior according to behaviorist principles. It begins by defining behaviorism as focusing on learning as a change in external behavior achieved through repetition, rewards, and discouragement of bad habits. It then covers the major behaviorist theorists like Pavlov, Thorndike, Watson, and Skinner and their key contributions to classical and operant conditioning. Classical conditioning involves stimulus-response learning while operant conditioning involves reinforcement and punishment influencing behavior. The document discusses different types of reinforcement schedules and the dangers of overusing punishment in learning.