Two trios of juvenile chimpanzees were studied to assess changes in the frequency of contact as a function of handler visits. The younger group showed significantly elevated contact following departure of handlers while the older trio showed no such effect. Results suggest that housing with like-aged chimpanzees allows mutual stimulation and comfort important to normal development.
References
1.
BronfenbrennerU.Early deprivation in mammals: Cross-species analysis. In NewtonG.LevineS. (Eds.), Early experiences and behavior. Springfield, IL: Thomas, 1968. Pp. 627–764.
2.
CooperD.An analysis of contact comfort behaviors of pairs of juvenile chimpanzees in a zoological setting. Paper presented at the Oregon-Washington Psychological Association meetings, Salishan, 1975.
3.
HindeR. A.Biological bases of human social behavior. New York: McGraw-Hill, 1974.
4.
MarkowitzH.New methods for increasing activity in zoo animals: Some results and proposals for the future. In SnyderR. L. (Ed.), Centennial symposium on science and research, Penrose Institute, Philadelphia Zoological Gardens. Topeka: Hill's Division, Riviana Foods, 1974. Pp. 151–162.
5.
MarkowitzH.Analysis and control of behavior in the zoo. In RabbG. B. (Ed.), Research in zoos and aquariums. Washington: National Academy of Sciences, 1975. Pp. 77–90.
6.
MasonW. A.Determinants of social behavior in young chimpanzees. In SchrierA. M.HarlowH. F.StollnitzF. (Eds.), Behavior of nonhuman primates. Vol. 2. New York: Academic Press, 1965. Pp. 335–364.
7.
MorrisD.Must we have zoos? Yes, but …Life, 1968, 65(19), 78–85.
