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Are humans cooperative breeders?: Most studies of natural fertility populations do not support the grandmother hypothesis

Published online by Cambridge University Press:  09 April 2010

Beverly I. Strassmann  and
Nikhil T. Kurapati
Beverly I. Strassmann
Affiliation:
Department of Anthropology and Research Center for Group Dynamics, University of Michigan, Ann Arbor, MI 48109. [email protected]@umich.edu
Nikhil T. Kurapati
Affiliation:
Department of Anthropology and Research Center for Group Dynamics, University of Michigan, Ann Arbor, MI 48109. [email protected]@umich.edu
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Abstract

In discussing the effects of grandparents on child survival in natural fertility populations, Coall & Hertwig (C&H) rely extensively on the review by Sear and Mace (2008). We conducted a more detailed summary of the same literature and found that the evidence in favor of beneficial associations between grandparenting and child survival is generally weak or absent. The present state of the data on human alloparenting supports a more restricted use of the term “cooperative breeding.” Human stem family situations with celibate helpers-at-the-nest can be described as cooperatively breeding, but the term is a poor fit to many human family systems.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 33 , Issue 1 , February 2010 , pp. 35 - 39
Copyright
Copyright © Cambridge University Press 2010

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References

Beise, J. (2005) The helping grandmother and the helpful grandmother: The role of maternal and paternal grandmothers in child mortality in the 17th and 18th century population of French settlers in Quebec, Canada. In: Grandmotherhood: The evolutionary significance of the second half of female life, ed. Voland, E., Chasiotis, A. & Schiefenhövel, W., pp. 215–38. Rutgers University Press.Google Scholar
Borgerhoff Mulder, M. (2007) Hamilton's rule and kin competition: The Kipsigis case. Evolution and Human Behavior 28:299–312.CrossRefGoogle Scholar
Campbell, C. & Lee, J. Z. (1996) A death in the family: Household structure and mortality in rural Liaoning: Life-event and time-series analysis, 1792–1867. The History of the Family 1(3):297–328.Google Scholar
Cockburn, A. (2006) Prevalence of different modes of parental care in birds. Proceedings of the Royal Society of London B 273:1375–83.Google ScholarPubMed
Derosas, R. (2002) Fatherless families in 19th-century Venice. In: When Dad died: Individuals and families coping with family stress in past societies, ed. Derosas, R. & Oris, M., pp. 421–52. Peter Lang.Google Scholar
Gibson, M. A. & Mace, R. (2005) Helpful grandmothers in rural Ethiopia: A study of the effect of kin on child survival and growth. Evolution and Human Behavior 26:469–82.CrossRefGoogle Scholar
Griffiths, P., Hinde, A. & Matthews, Z. (2001) Infant and child mortality in three culturally contrasting states of India. Journal of Biosocial Science 33(4):603–22.CrossRefGoogle ScholarPubMed
Hill, K. & Hurtado, A. M. (1996) Ache life history: The ecology and demography of a foraging people. Aldine de Gruyter.Google Scholar
Hrdy, S. B. (2005b) Cooperative breeders with an ace in the hole. In: Grandmotherhood: The evolutionary significance of the second half of female life, ed. Voland, E., Chasiotis, A. & Schiefenhövel, W., pp. 295–317. Rutgers University Press.Google Scholar
Jamison, C. S., Cornell, L. L., Jamison, P. L. & Nakazato, H. (2002) Are all grandmothers equal? A review and a preliminary test of the “grandmother hypothesis” in Tokugawa Japan. American Journal of Physical Anthropology 119:67–76.CrossRefGoogle Scholar
Kemkes-Grottenthaler, A. (2005) Of grandmothers, grandfathers and wicked step-grandparents: Differential impact of paternal grandparents on grandoffspring survival. Historical Social Research 30(3):219.Google Scholar
Komdeur, J. (1992) Importance of habitat saturation and territory quality for evolution of cooperative breeding in the Seychelle's warbler. Nature 358:493–95.CrossRefGoogle Scholar
Kramer, K. L. (2005a) Children's help and the pace of reproduction: Cooperative breeding in humans. Evolutionary Anthropology 14:224–37.Google Scholar
Ladusing, L. & Singh, C. H. (2006) Place, community education, gender and child mortality in north-east India. International Journal of Population Geography 12(1):65–76.Google Scholar
Lawson, D. W. & Mace, R. (2008) Sibling configuration and childhood growth in contemporary British families. International Journal of Epidemiology 37:1408–21.Google Scholar
Leonetti, D. L., Nath, D. C., Hemam, N. S. & Neill, D. B. (2005) Kinship organization and the impact of grandmothers on reproductive success among the matrilineal Khasi and patrilineal Bengali of northeast India. In: Grandmotherhood: The evolutionary significance of the second half of female life, ed. Voland, E., Chasiotis, A. & Schiefenhövel, W., pp. 194–214. Rutgers University Press.Google Scholar
Pruett-Jones, S. G. & Lewis, J. J. (1990) Habitat limitation and sex ratio promote delayed dispersal in Superb fairy-wrens. Nature 348:541–42.Google Scholar
Sear, R. (2008) Kin and child survival in rural Malawi: Are matrilineal kin always beneficial in a matrilineal society? Human Nature 19:277–93.Google Scholar
Sear, R. & Mace, R. (2008) Who keeps children alive? A review of the effects of kin on child survival. Evolution and Human Behavior 29:1–18.Google Scholar
Sear, R., Mace, R. & McGregor, I. A. (2000) Maternal grandmothers improve nutritional status and survival of children in rural Gambia. Proceedings of the Royal Society B: Biological Sciences 267:1641–47.CrossRefGoogle ScholarPubMed
Sear, R., Steele, F., McGregor, I. A. & Mace, R. (2002) The effects of kin on child mortality in rural Gambia. Demography 39(1):43–63.Google Scholar
Strassmann, B. I. & Clarke, A. L. (1998) Ecological constraints on marriage in rural Ireland. Evolution and Human Behavior 19:33–55.CrossRefGoogle Scholar
Strassmann, B. I. & Gillespie, B. (2002) Life-history theory, fertility and reproductive success in humans. Proceedings of the Royal Society of London B 269:553–62.Google Scholar
Strassmann, B. I. & Kurapati, N. (in preparation) Grandparenting, menopause, and cooperative breeding in humans: A reassessment.Google Scholar
Voland, E. & Beise, J. (2002) Opposite effects of maternal and paternal grandmothers on infant survival in historical Krummhörn. Behavioral Ecology and Sociobiology 52:435–43.Google Scholar
Voland, E., Siegelkow, E. & Engel, C. (1991) Cost/benefit oriented parental investment by high status families: The Krummhörn case. Ethology and Sociobiology 12:105–118.Google Scholar
Williams, G. C. (1957) Pleiotropy, natural selection, and the evolution of senescence. Evolution 11:398–411.CrossRefGoogle Scholar