John Broadus Watson (1878-1956) was a behaviorist who went from teaching at the University of Chicago to being a professor at Johns Hopkins University to being in advertising in New York.  His most famous experiment, “Conditioned Emotional Reactions,” involved an eleven-month-old known as “Little Albert.”  He worked on the experiment with Rosalie Rayner, whom he had an affair with and eventually married.  In the experiment he took a child who did not have a fear of white fluffy objects and got him to be conditioned to fear a white rat and then generalize that fear to other objects.  He made no attempt to rid the child of his irrational fears of the objects, but he did state in his publication ways in which he could of (poor Little Albert did not receive any of those treatments however).