Answer: Behaviorist
Explanation: Behaviorism was a movement in the study of thought in philosophy and psychology that focused on the observable presentation of thought rather than the internal workings of the mind. The term was named Behaviorism by John B. Watson and it was based on the initial works carried out by Ivan Pavlov.
Ivan Pavlov was a Russian physiologist who, while carrying out experiments on animals, found that animals are conditioned to behave a certain way depending on a stimuli in their environment. This formed a background for establishing a relationship between stimuli and behavior.
