Thorndike termed his psychology connectionism, and it was, along with Ivan Pavlov’s conditioning, or reflexology, one of the forerunners of the behaviorism that dominated Amrican psychology until around 1930, when it began to branch into the neobehaviorism of Edward Tolman and Clark L. Hull and the radical behaviorism of Burrhus Frederic Skinner(Madsen, 1988,p.477).