Answer:
John Broadus Watson
Explanation:
John Watson's full name is John Broadus Watson. He was an American psychologist of the early 19th century. He played a very important role in developing behaviorism. John Broadus Watson is highly remembered for establishing his Psychological School of Behaviorism. John B. Watson always played importance in the belief that psychology is primarily a scientific and observable behavior.
Thus the answer is John Broadus Watson.
