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Archives of Sexual Behavior

, Volume 13, Issue 5, pp 395–412 | Cite as

Social influences on the display of sexually dimorphic behavior in rhesus monkeys: Isosexual rearing

  • David A. Goldfoot
  • Kim Wallen
  • Deborah A. Neff
  • Mary C. McBrair
  • Robert W. Goy
Article

Abstract

Groups containing 5 or 6 infant rhesus monkeys and their mothers were formed when the infants were approximately 3 months old by random assignment from an available pool. There were 33 males and 38 females assigned to groups containing infants of both sexes (heterosexual groups); 15 males and 15 females were assigned to groups containing only infants of the same sex (isosexual groups). The social behavior of subjects in each group was observed and recorded during six 50-day periods from 3 months of age to 31/2years of age. Two sexually dimorphic patterns, mounting and presenting, were recorded for each subject as indices of protosexual (i.e., patterns eventually used in adult mating behavior) development. In addition, rough play, a dimorphic response that is not protosexual, was also recorded.

Both males and females in the isosexual condition were characterized by a partial inversion of the manifestation of protosexual behavior. Isosexual males showed statistically less foot-clasp mounting and more presenting than heterosexual males. Conversely, isosexually reared females showed statistically more mounting and less presenting than heterosexual females. The effect of rearing animals in same-sex groups was greater on heterotypical than on homotypical protosexual behavior. Among isosexual males, presenting responses deviated from the heterosexual male standard to a greater extent than did mounting. Among isosexual females, mounting behavior deviated from the heterosexual female standard more than presenting.

Results suggested that presenting behavior by males was more easily augmented by isosexual rearing conditions than was mounting by females. At no time during the experiments did isosexual females mount at frequencies or at group proportions that were indistinguishable from those of heterosexually reared males. In contrast, males reared isosexually showed average frequencies of presenting that equaled or exceeded means for females reared heterosexually.

While mounting and presenting were both modified by same-sex rearing, rough-and-tumble-play frequencies were not influenced markedly in either sex. However, isosexual males did show statistically higher frequencies of rough play than heterosexual males during the final period of observation (3 to 31/2years of age), and isosexual females showed less rough play than heterosexually reared females during the first year of life.

Results support the conclusion that isosexual conditions can have a selective effect on the developmental expression of protosexual responses without altering the probability of display of other sexually dimorphic social behavior. Interpretations are offered within a framework of a biological-social interaction model.

Key words

isosexual rearing heterosexual rearing sex-typed behavior dimorphic behavior mounting rough-and-tumble play presenting dominance protosexual 

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References

  1. Bell, A. P., Weinberg, M. S., and Hammersmith, S. K. (1981).Sexual Preference: Its Development in Men and Women. Indiana University Press, Bloomington, pp. 68–70, 140, 141.Google Scholar
  2. Coehlo, A. M., Jr., and Bramblett, C. A. (1981). Sexual dimorphism in the activity of olive baboons (Papio cynocephalus anubis) housed in monosexual groups.Arch. Sex. Behav. 10: 79.PubMedGoogle Scholar
  3. Goldfoot, D. A. (1977). Sociosexual behaviors of nonhuman primates during development and maturity: Social and hormonal relationships. In Schrier, A. M. (ed.),Behavioral Primatology—Advances in Research and Theory (Vol. 1), Lawrence Erlbaum, Hillsdale, New Jersey, pp. 139–184.Google Scholar
  4. Goldfoot, D. A., Neff, D. A., McBrair, M. C., and Goy, R. W. Mediating role of social position in the expression of sexually dimorphic behavior. In progress.Google Scholar
  5. Goldfoot, D. A., and Wallen, K. (1979). Development of gender role behaviors in heterosexual and isosexual groups of infant rhesus monkeys. In Chivers, D. J., and Herbert, J. (eds.),Recent Advances in Primatology, Vol. 1, Behaviour Academic Press, London, pp. 155–159.Google Scholar
  6. Goy, R. W. (1973). Hormonally induced pseudohermaphroditism and behavior. In Motulsky, A. G., and Lentz, W. (eds.),International Congress Series No. 310, Birth Defects, Proceedings of the Fourth International Conference, Vienna, Austria, 2–8 September 1973. Excerpta Medica, Amsterdam.Google Scholar
  7. Goy, R. W. (1978). Development of play and mounting behavior in female rhesus virilized prenatally with esters of testosterone or dihydrotestosterone. In Chivers, D. J., and Herbert, J. (eds.),Recent Advances in Primatology, Vol. 1, Behaviour Academic Press, London, p. 449.Google Scholar
  8. Goy, R. W. (1981). Differentiation of male social traits in female rhesus macaques by prenatal treatment with androgens: Variation in type of androgen, duration, and timing of treatment. In Novy, M. J., and Resko, J. A. (eds.),Fetal Endrocrinology Academic Press, New York, p. 319.Google Scholar
  9. Goy, R. W., and Goldfoot, D. A. (1973). Hormonal influences on sexually dimorphic behavior. In Greep, R. O., and Astwood, E. B. (eds.),Handbook of Psychology—Endrocrinology II American Physiological Society, Washington, D.C., pp. 169–186.Google Scholar
  10. Goy, R. W., and Goldfoot, D. A. (1974). Experimental and hormonal factors influencing development of sexual behavior in the male rhesus monkey. In Schmitt, F. O., and Worden, F. G. (eds.),The Neurosciences, Third Study Program MIT Press, Cambridge, Massachusetts, pp. 571–581.Google Scholar
  11. Goy, R. W., and Phoenix, C. H. (1972). The effects of testosterone propionate administered before birth on the development of behavior in genetic female rhesus monkeys. In Sawyer, C., and Gorski, R. (eds.), Steroid Hormones and Brain Function, University of California Press, Berkeley, p. 193.Google Scholar
  12. Goy, R. W., and Robinson, J. A. (1982). Prenatal exposure of rhesus monkeys to patent androgens: Morphological, behavioral, and physiological consequences. In Banbury Report 11, Cold Spring Harbor Laboratory.Google Scholar
  13. Goy, R. W., and Wallen, K. (1979). Experimental variables influencing play, foot-clasp mounting and adult sexual competence in male rhesus monkeys.Psychoneuroendrocrinology 4, 1–12.Google Scholar
  14. Goy, R. W., Wallen, K., and Goldfoot, D. A. (1974). Social factors affecting the development of mounting behavior in male rhesus monkeys. In Montagna, W., and Sadler, W. A. (eds.), Reproductive Behavior, Plenum, New York, pp. 223–247.Google Scholar
  15. Wallen, K., Goldfoot, D. A., and Goy, R. W. (1981). Peer and maternal influences on the expression of foot-clasp mounting by juvenile male rhesus monkeys.Dev. Psychobiol. 14: 299–309.PubMedGoogle Scholar
  16. Wallen, K., Thornton, J., and Goy, R. W. Facilitation of mounting in juvenile female rhesus monkeys by removal of male peers. Unpublished.Google Scholar

Copyright information

© Plenum Publishing Corporation 1984

Authors and Affiliations

  • David A. Goldfoot
    • 1
  • Kim Wallen
    • 2
  • Deborah A. Neff
    • 1
  • Mary C. McBrair
    • 1
  • Robert W. Goy
    • 1
  1. 1.Wisconsin Regional Primate Research CenterMadisonUSA
  2. 2.Department of PsychologyEmory UniversityAtlantaUSA

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