Proponents:
Ivan Pavlov, 1849 - 1936
Edward Thorndike, 1874 - 1949
John B. Watson, 1878 - 1958
Edward C. Tolman, 1886 - 1959
Clark Leonard Hull, 1884 - 1952
Robert (B.F.) Skinner, 1904 - 1990
Unit of Analysis:
Individuals' behavior and the stimuli that elicits these behaviors
Behaviorism was a predominant psychological school during the early 1900s. The theory operates on a stimulus-response principle assuming that all behavior is caused by an external stimuli (also known as operant conditioning). Behaviorists believe that all behavior can be explained without the need to consider internal mental states or consciousness.