The Little Albert experiment was an experiment showing empirical evidence of classical conditioning. This study was also an example of stimulus generalisation. It was conducted in 1920 by John B. Watson along with Rosalie Rayner, his assistant whom he later married. The study was done at Johns Hopkins University. John B. Watson, after naturally observing children, was interested in finding support for his notion that the reaction of children, whenever they heard loud noises, was prompted by fear. Furthermore, he reasoned that this fear was innate or due to an unconditioned response. He felt that following the principles of classical conditioning, he could condition a child to fear another distinctive stimulus which normally would not be feared by a child. (wikipedia)