B.F. Skinner, who favored the behaviorist approach to psychology, criticized the psychoanalytical theory by suggesting that psychology should be the study of behavior and not just the mind. However, Skinner's approach was radical, in that he did consider our inner thoughts and feelings, but denied that they had anything to do with behavior. His study of behavior involved close contact with the experimental laboratory, where he experimented with small animals such as rats and pigeons. As the experimenter, he was able to study the use of stimuli and reinforcement of behavior.
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