"In 1920, when she graduated from Vassar College with her degree in psychology, Rosalie Rayner took a coveted position at the Johns Hopkins research lab to assist the charismatic John B. Watson, the man who pioneered behaviorist psychology. Together, John Watson and Rosalie Rayner conducted experiments on hundreds of babies to prove behaviorist principles of nurture over nature. They also embarked on a scandalous affair that cost them both their jobs....