Bedtime for Bonzo is a 1951 comedy film directed by Fred de Cordova, starring Ronald Reagan, Diana Lynn, and Peggy as Bonzo. It revolves around the attempts of the central character, psychology professor Peter Boyd (Ronald Reagan), to teach human morals to a chimpanzee, hoping to solve the "nature versus nurture" question. He hires a woman, Jane Linden (Diana Lynn), to pose as the chimp's mother while he plays father to it, and uses 1950s-era child rearing techniques.