College prof Peter Boyd tries to salvage his professional and personal reputation by using a lab chimp to prove that environment trumps heredity in behavioral development.
Bedtime for Bonzo is a 1951 American comedy film directed by Fred de Cordova and starring Ronald Reagan, Diana Lynn, and a chimpanzee named Peggy as Bonzo. Its central character, a psychology professor (Reagan), tries to teach human morals to a chimpanzee, hoping to solve the "nature versus nurture" question.