The history of behaviorism is provided, along with the contributions of four psychologists: Ivan Pavlov, Edward Thorndike, John B. Watson, and B.F. Skinner. Their work formed the foundation of behaviorism, which focuses on observing and analyzing how a controlled environment affects observable behavior.

The principles of behaviorism are defined, including the role of the teacher in controlling the environment and using rewards and punishments to shape behavior. The limitations of behaviorism are also discussed, including its oversimplification of human learning, disregard for internal cognitive processes, and view of humans as simple animals.

In conclusion, behaviorism is a study of how controlled changes to a subject's environment affect their observable behavior, and it is still accepted and practiced today. However, it may oversimplify the complexity of human learning and disregard internal cognitive processes.