Which of the following is true of B. F. Skinner's contribution to behaviorism?

B. F. Skinner is a renowned psychologist who made significant contributions to the field of behaviorism. His work primarily focused on understanding and explaining how our behaviors are influenced by the environment and the consequences of our actions.

1. Operant Conditioning: Skinner is best known for his theory of operant conditioning, which suggests that behavior is learned and maintained by its consequences. This means that behaviors followed by favorable outcomes are likely to occur again in the future, while those followed by unfavorable outcomes are less likely to occur.

2. Reinforcement and Punishment: Skinner introduced the concepts of reinforcement and punishment in learning. Reinforcement (both positive and negative) increases the likelihood of a behavior, while punishment decreases it.

3. Skinner Box: He also developed a device known as the "Skinner Box" or operant conditioning chamber. This was a box that contained a lever (for rats) or a key (for pigeons) that an animal could press or peck in order to receive food or water as a reward. The Skinner Box allowed Skinner to study animal behavior in a controlled environment.

4. Shaping: Skinner introduced the concept of shaping, a method of training by which successive approximations toward a target behavior are reinforced.

5. Radical Behaviorism: Skinner proposed a form of behaviorism called "radical behaviorism," which considers all actions of a living organism to be behaviors. It differs from other forms of behaviorism in its assumption that behaviors are also driven by thoughts and feelings.

So, in summary, B. F. Skinner's contribution to behaviorism is vast and influential, including his theories of operant conditioning, reinforcement, punishment, shaping, and radical behaviorism.