His most famous experiment was conducted in the winter of 1919 and 1920 with a baby known as Albert B. Watson and his assistant gave Albert a white lab rat; he was unafraid and tried to touch the rat.

John B. Watson believed that psychology should be the science of observable behavior. Early Life of John Broadus Watson. John B. Watson was born on January 9, 1878. His ...

American psychologist John Watson wanted to find out — so, in the name of science, he tried to instill specific new fears into a baby boy he called Albert. His study, now commonly referred to as ...

Most people try to avoid making babies cry. The same could not be said for the scientists in John Watson's infant laboratory. OJO Images / Getty Images ...