1. Training as a management tool: Creating the climate and maintaining the momentum. Pp. 563-568 in Proceedings, American Association of Zoological Parks and Aquariums Annual Conference, San Diego, 1991.
2. Chimpanzee training and behavioral research: A symbiotic relationship. Pp. 403-410 in Proceedings, American Association of Zoological Parks and Aquariums Annual Conference, Toronto, 1992.
3. ; ; ; Using training to modify chimpanzee aggression. Pp. 719-722 in Proceedings, American Association of Zoological Parks and Aquariums Central Regional Conference, Dallas, 1992.
4. Increase in the frequency of social interactions and the likelihood of reproduction among drills. Pp. 321-328 in Proceedings, American Association of Zoological Parks and Aquariums Western Regional Conference, Fresno, 1987.
5. Chimpanzee Politics. New York, Harper & Row, 1982.