Final answer:
John B. Watson's contributions to psychology include shifting the focus from the mind to observable behavior, emphasizing objective analysis and experimentation, and establishing behaviorism as a dominant school of thought in psychology.
Step-by-step explanation:
John B. Watson is considered the father of behaviorism within psychology. He made significant contributions to the field by shifting the focus from the mind to observable behavior. Watson believed that psychology should be a scientific discipline and emphasized objective analysis and experimentation. His work paved the way for behaviorism to dominate experimental psychology for several decades, and it continues to influence areas such as behavioral and cognitive-behavioral therapy.