One of the most famous and most mythologised studies in psychology concerns John Watson's experiment to condition 'Little Albert' to be afraid of a white rat. 'Little Albert' and his mother moved away afterwards and no-one knew what happened to him, leading to one of the most enduring mysteries in psychology. Finally, it seems, his identity has been discovered.

An article in the latest edition of American Psychologist recounts a detective story, led by psychologist Hall Beck, to try and solve the question of what happened to 'Little Albert' after his participation in the famous study.