This film is a demonstration of how social situations pattern behavior in rats. The film shows a competitive food-obtaining situation in which rats develop sharing or altruistic behavior. It also shows a situation in which competitive behavior becomes increasingly severe instead of developing into sharing. Displaced aggression, hoarding, and other socially significant behavior are shown. Learn more about the National Library of Medicine's historical audiovisuals program at: https://www.nlm.nih.gov/hmd/collections/films.html
