John. B Watson
In 1913, John B. Watson was invited to speak at Columbia University and Watson shared his theory of behavioral psychology. The lecture that Watson delivered at Columbia University was published during the same year with an insulting title “Psychology as the Behaviorist Views It” (Goodwin, 2008). This publication was known as the Behaviorist Manifesto. Watson was sounding the charge against introspection and declared that there was no relationship between animal behavior and human behavior during his lecture (Horowitz, 1992). Goodwin (2008) quoted the opening paragraph from the called Behaviorist Manifesto, Psychology as the behaviorist views it is purely objective experimental branch of natural science. Its theoretical goal is the prediction and control of behavior. Introspection forms no essential part of its methods, nor is the scientific value of its data dependent upon the readiness with which they lend themselves to interpretation in terms of consciousness. The behaviorist, in his efforts to get unitary scheme of animal response,