Answer:
William James
Explanation:
William James was a behaviorist. He worked on the behavior of humans and animals. James has established a laboratory on perception and sensation in his half of the career. He develops the relationship between behavior and brain that later on the theory called James-Lange theory of emotions.
He posits that human emotions occur with physiological reactions. He was highly influential. He was inspired by the evolutionary theory. He shaped his student's thinking and highly influential. He posits the relationship between internal state and external reaction.