July 1963 Issue [Article] The apish origins of human tension Download PDF Adjust Share The case of the amiable chimps and the nervous baboons by John E. Pfeiffer, This article is only available as a PDF to subscribers. Download PDF Tags 20th century Anthropology Baboons Behavior Chimpanzees Human evolution Individuality Irven DeVore Jane Goodall Kenya Research S.L. (Sherwood Larned) Washburn Social structure Stress (Physiology) Adjust Share