JHON.B.WATSON(1878-1950) put forward an entirely new doctrine, named behaviorism which was quite contrary to structuralism and functionalism . He concluded that the whole idea of consciousness is absurd . Consciousness cant be proved by any scientific test .For consciousness cannot be seen , touched,or exhibited in a test tube .Even if it exists it cannot be studied scientifically admittedly it is subjected only to private inspection .There fore if we intend to make psychology a science of behavior .we should concentrate only on a observable and measurable behavior.
Behaviorism as method of studying behavior focused its attention totally on the overt or observable behavior . For this purpose, it tried to reduce all of man’s activity including his thinking , feeling ,qualities of the that level of the behavior which could be observed and objectively recorded . Thus , a behaviorist is not interested in the feeling of fear but pay attention to the change in heart rate and blood pressure which are the effect of fear and can be objectively measured