Abstract
!Kung San (Bushman) hunter-gatherers have unusually high levels of mother-infant contact and represent one of the environments of human evolutionary adaptedness (EEAs). Studies among the !Kung show that levels of crying—the most basic sign of mammalian infant distress—are low, and response to crying is high, and some suggest that responses are overwhelmingly maternal. We show that although !Kung mothers respond to crying most often, one-third of crying bouts are managed solely by someone else. Mothers responded to all bouts lasting ≥30 s, but in half of these responses they were joined by one or more others. Mothers are the most consistent responders, but multiple caregiving is common. The mother is rarely alone when her baby cries; others often substitute or join her in interventions. This social support may facilitate the high levels of maternal responsiveness characteristic of the !Kung, and of hunter-gatherers generally, but it is also consistent with recent theory emphasizing nonmaternal care (allocare) and cooperative breeding.
Similar content being viewed by others
References
Axia, G., & Bonichini, S. (1998). Regulation of emotion after acute pain from 3 to 18 months: a longitudinal study. Early Development & Parenting, 7(4), 203–210.
Baildam, E. M., Hillier, V. F., Ward, B. S., Bannister, R. P., Bamford, F. N., & Moore, W. M. O. (1995). Duration and pattern of crying in the first year of life. Developmental Medicine and Child Neurology, 37, 345–353.
Bakeman, R., Adamson, L., Barr, R. G., & Konner, M. (1990). The social context of object exploration. Child Development, 61, 794–809.
Bakeman, R., Adamson, L. B., Konner, M., & Barr, R. G. (1997). Sequential analyses of !Kung infant communication: Inducing and recruiting. In E. Amsel & K. A. Renninger (Eds.), Change and development: Issues of theory, method, and application (pp. 173–192). Mahwah: Lawrence Erlbaum Associates.
Bakermans-Kranenburg, M. J., Van IJzendoorn, M. H., & Juffer, F. (2003). Less is more: meta-analyses of sensitivity and attachment interventions in early childhood. Psychological Bulletin, 129(2), 195–215.
Barr, R. G. (1990a). The early crying paradox: a modest proposal. Human Nature, 1(4), 355–389.
Barr, R. G. (1990b). The normal crying curve: what do we know? Developmental Medicine and Child Neurology, 32, 368–374.
Barr, R. G., Bakeman, R., Konner, M., & Adamson, L. (1987). Crying in !Kung infants: distress signals in a responsive context. American Journal of Diseases of Childhood, 141, 386.
Barr, R. G., Konner, M., Bakeman, R., & Adamson, L. (1991). Crying in !Kung San infants: a test of the cultural specificity hypothesis. Developmental Medicine and Child Neurology, 33, 601–610.
Barry, H. I., & Paxson, L. (1971). Infancy and early childhood: cross-cultural codes 2. Ethnology, 10, 466–508.
Bell, S. M., & Ainsworth, M. D. S. (1972). Infant crying and maternal responsiveness. Child Development, 43, 1171–1190.
Bereczkei, T., & Dunbar, R. (2002). Helping-at-the-nest and sex-biased parental investment in a Hungarian Gypsy population. Current Anthropology, 43(5), 804–809.
Blurton Jones, N. G. (1972). Ethological studies of child behaviour. Cambridge: Cambridge University Press.
Blurton Jones, N. G. (1990). The costs of children and the adaptive scheduling of births: Towards a sociobiological perspective of demography. In A. E. Rasa, C. Vogel, & E. Voland (Eds.), The sociobiology of sexual and reproductive strategies. London: Chapman & Hall.
Blurton Jones, N. G. (1993). The lives of hunter-gatherer children: Effects of parental behavior and parental reproductive strategy. In M. E. Pereira & L. A. Fairbanks (Eds.), Juvenile primates: Life history, development, and behavior (pp. 309–326). New York: Oxford.
Bond, M. J., Prager, M. A., Tiggemann, M., & Tao, B. (2001). Infant crying, maternal wellbeing and perceptions of caregiving. Journal of Applied Health Behaviour, 3(1), 3–9.
Bowlby, J. (1970–1980). Attachment and loss, 3 vols. New York: Basic Books.
Draper, P. (1997). Institutional, evolutionary, and demographic contexts of gender roles: a case study of !Kung Bushmen. In M. E. Morbeck, A. Galloway, & A. L. Zihlman (Eds.), The evolving female: A life history perspective (pp. 220–232). Princeton: Princeton University Press.
Draper, P., & Harpending, H. (1987). Parent investment and the child’s environment. In J. B. Lancaster, J. Altmann, A. S. Rossi, & L. R. Sherrod (Eds.), Parenting across the life span: Biosocial dimensions (pp. 207–236). New York: Aldine de Gruyter.
Emlen, S. T. (1995). An evolutionary theory of the family. Proceedings of the National Academy of Sciences of the United States of America, 92(18), 8092–8099.
Etzel, B. C., & Gewirtz, J. L. (1967). Experimental modification of caretaker-maintained high-rate operant crying in a 6- and a 20-week-old infant (Infans tyrannotearus): extinction of crying with reinforcement of eye contact and smiling. Journal of Experimental Child Psychology, 5(3), 303–317.
Fouts, H. N., & Lamb, M. E. (2005). Weanling emotional patterns among the Bofi foragers of Central Africa: The role of maternal availability and sensitivity. In B. S. Hewlett & M. E. Lamb (Eds.), Hunter-gatherer childhoods: Evolutionary, developmmental & cultural perspectives (pp. 309–321). New Brunswick: AldineTransaction Publishers.
Fouts, H. N., Lamb, M. E., & Hewlett, B. S. (2004). Infant crying in hunter-gatherer cultures. Behavioral and Brain Sciences, 27(4), 462–463.
Gewirtz, J. L. (1977). Does maternal responding imply reduced infant crying? A critique of the 1972 Bell and Ainsworth report. Child Development, 48, 1200–1207.
Gray, L., Watt, L., & Blass, E. M. (2000). Skin-to-skin contact is analgesic in healthy newborns. Pediatrics, 105(1), e14.
Hawkes, K. (2003). Grandmothers and the evolution of human longevity. American Journal of Human Biology, 15(3), 380–400.
Hewlett, B. S. (1989). Multiple caretaking among African Pygmies. American Anthropologist, 91(1), 186–191.
Hewlett, B. S. (1991). Intimate fathers: the nature and context of Aka Pygmy paternal infant care. Ann Arbor: University of Michigan Press.
Hewlett, B. S., & Lamb, M. E. (Eds.). (2005). Hunter-gatherer childhoods: Evolutionary, developmmental & cultural perspectives. New Brunswick: Aldine Transaction Publishers.
Hewlett, B. S., Lamb, M. E., Shannon, D., Leyendecker, B., & Schölmerich, A. (1998). Culture and early infancy among central African foragers and farmers. Developmental Psychology, 34(4), 653–661.
Hewlett, B. S., Lamb, M. E., Leyendecker, B., & Schölmerich, A. (2000). Internal working models, trust, and sharing among foragers. Current Anthropology, 41(2), 287–297.
Hill, K., & Hurtado, A. M. (1996). Ache life history: The ecology and demography of a foraging people. New York: Aldine de Gruyter.
Hill, K., & Hurtado, A. M. (1999). The Aché of Paraguay. In R. B. Lee & R. Daly (Eds.), The Cambridge encyclopedia of hunters and gatherers (pp. 92–96). Cambridge: Cambridge University Press.
Howes, C. (1999). Attachment relationships in the context of multiple caregivers. In J. S. P. R. Cassidy (Ed.), Handbook of attachment: Theory, research, and clinical applications (pp. 671–687). New York: Guilford Press.
Hrdy, S. B. (2005). Comes the child before man: How cooperative breeding and prolonged postweaning dependence shaped human potential. In B. S. Hewlett & M. E. Lamb (Eds.), Hunter-gatherer childhoods: Evolutionary, developmental and cultural perspectives (pp. 65–91). New Brunswick: AldineTransaction.
Hrdy, S. B. (2009). Mothers and others: The evolutionary origins of mutual understanding. Cambridge: Harvard University Press.
Hunziker, U. A., & Barr, R. G. (1986). Increased carrying reduces infant crying: a randomized controlled trial. Pediatrics, 77, 641–648.
Ivey, P. K. (2000). Cooperative reproduction in Ituri Forest hunter-gatherers: who cares for Efe infants? Current Anthropology, 41(5), 856–866.
Kagan, J. (1977). The uses of cross-cultural research in early development. In T. H. Leiderman, S. R. Tulkin, & A. Rosenfeld (Eds.), Culture and infancy. New York: Academic.
Kaplan, H., & Dove, H. (1987). Infant development among the Ache of Eastern Paraguay. Developmental Psychology, 23(2), 190–198.
Kaplan, H., Hill, K., Lancaster, J., & Hurtado, A. M. (2000). A theory of human life history evolution: diet, intelligence, and longevity. Evolutionary Anthropology, 9(4), 156–185.
Konner, M. J. (1972). Aspects of the developmental ethology of a foraging people. In N. G. Blurton Jones (Ed.), Ethological studies of child behavior (pp. 285–304). Cambridge: Cambridge University Press.
Konner, M. J. (1976). Maternal care, infant behavior and development among the !Kung. In R. B. Lee & I. DeVore (Eds.), Kalahari hunter-gatherers. Cambridge: Harvard University Press.
Konner, M. J. (1977). Infancy among the Kalahari Desert San. In P. H. Leiderman, S. R. Tulkin, & A. Rosenfeld (Eds.), Culture and infancy (pp. 287–328). New York: Academic.
Konner, M. J. (1981). Evolution of human behavior development. In R. H. Munroe, R. L. Munroe, & B. B. Whiting (Eds.), Handbook of cross-cultural human development (pp. 3–51). New York: Garland STPM Press.
Konner, M. J. (2005). Hunter-gatherer infancy and childhood: the !Kung and others. In B. S. Hewlett & M. E. Lamb (Eds.), Hunter-gatherer childhoods: Evolutionary, developmmental & cultural perspectives (pp. 19–64). New Brunswick: AldineTransaction.
Konner, M. J., & Worthman, C. (1980). Nursing frequency, gonadal function, and birth spacing among !Kung hunter-gatherers. Science, 207, 788–791.
Kramer, K. L. (2005). Children’s help and the pace of reproduction: cooperative breeding in humans. Evolutionary Anthropology, 14(6), 224–237.
Lee, R. B. (1979). The !Kung San. Men, women and work in a foraging society. Cambridge: Cambridge University Press.
Lee, R. B. (1984). The Dobe !Kung. New York: Holt, Rinehart and Winston.
Lee, K. (2000). Crying and behavior pattern in breast- and formula-fed infants. Early Human Development, 58(2), 133–140.
Lee, R. B., & Daly, R. (Eds.). (1999). The Cambridge encyclopedia of hunters and gatherers. Cambridge: Cambridge University Press.
Lee, R. B., & DeVore, I. (Eds.). (1976). Kalahari hunter-gatherers: Studies of the !Kung San and their neighbors. Cambridge: Harvard University Press.
Leiderman, P. H., & Leiderman, G. F. (1977). Economic change and infant care in an East African agricultural community. In P. H. Leiderman, S. R. Tulkin, & A. Rosenfeld (Eds.), Culture and infancy. New York: Academic.
Leiderman, P. H., Tulkin, S. R., & Rosenfeld, A. (Eds.). (1977). Culture and infancy. New York: Academic.
LeVine, R. A. (1997). Mother-infant interaction in cross-cultural perspective. In N. L. Segal, G. E. Weisfeld, & C. C. Weisfeld (Eds.), Uniting psychology and biology: integrative perspectives on human development (pp. 339–354). Washington DC: American Psychological Association.
Lorberbaum, J. P., Newman, J. D., Horwitz, A. R., Dubno, J. R., Lydiard, R. B., Hamner, M. B., et al. (2002). A potential role for thalamocingulate circuitry in human maternal behavior. Biological Psychiatry, 51(6), 431–445.
Lozoff, B., & Brittenham, G. (1978). Infant care: Cache or carry. Meeting of the Society for Pediatric Research. New York: Society for Pediatric Research.
Lozoff, B., & Brittenham, G. (1979). Infant care: cache or carry. Journal of Pediatrics, 95(3), 478–483.
Lummaa, V., Vuorisalo, T., Barr, R. G., & Lehtonen, L. (1998). Why cry? Adaptive significance of intensive crying in human infants. Evolution & Human Behavior, 19(3), 193–202.
MacLean, P. D. (1985). Brain evolution relating to family, play, and the separation call. Archives of General Psychiatry, 42, 405–417.
McGlaughlin, A., & Grayson, A. (2001). Crying in the first year of infancy: patterns and prevalence. Journal of Reproductive & Infant Psychology, 19(1), 47–59.
Meehan, C. L. (2005). The effects of residential locality on parental and alloparental investment among the Aka foragers of the Central African Republic. Human Nature, 16(1), 58–80.
Monroe, R. H., Monroe, R. L., & Whiting, B. B. (Eds.). (1981). Handbook of cross-cultural development. New York: Garland Press.
Morelli, G. A., & Tronick, E. Z. (1991). Efe multiple caretaking and attachment. In J. L. Gewirtz & W. M. Kurtines (Eds.), Intersections with attachment (pp. 41–51). Hillsdale: L. Erlbaum Associates.
Robson, S. L., & Wood, B. (2008). Hominin life history: reconstruction and evolution. Journal of Anatomy, 212(4), 394–425.
Rogoff, B. (1997). Evaluating development in the process of participation: Theory, methods, and practice building on each other. In E. Amsel & K. A. Renninger (Eds.), Change and development: issues of theory, method, and application (pp. 265–285). Mahwah: Lawrence Erlbaum Associates.
Rogoff, B., & Morelli, G. (1989). Perspectives on children’s development from cultural psychology. The American Psychologist, 44, 343–348.
Sear, R., Mace, R., & McGregor, I. A. (2000). Maternal grandmothers improve nutritional status and survival of children in rural Gambia. Proceedings Biological Sciences/The Royal Society, 267(1453), 1641–1647.
Scelza, B. A. (2009). The grandmaternal niche: critical caretaking among Martu Aborigines. American Journal of Human Biology, 21, 448–454.
Soltis, J. (2004). The signal functions of early infant crying. Behavioral and Brain Sciences, 27(4), 443–490.
St James-Roberts, I., Conroy, S., & Wilsher, K. (1998). Links between maternal care and persistent infant crying in the early months. Child: Care, Health and Development, 24(5), 353–376.
Tronick, E. Z., Morelli, G. A., & Winn, S. (1987). Multiple caretaking of Efe (Pygmy) infants. American Anthropologist, 89, 96–106.
Tronick, E. Z., Morelli, G. A., & Ivey, P. K. (1992). The Efe forager infant and toddler’s pattern of social relationships: multiple and simultaneous. Developmental Psychology, 28(4), 568–577.
Tulkin, S. R. (1970). Mother-infant interaction in the first year of life: An inquiry into the influences of social class. Ph.D. dissertation, Department of Psychology, Harvard University.
Tulkin, S. R. (1977). Social class differences in maternal and infant behavior. In P. H. Leiderman, S. R. Tulkin, & A. Rosenfeld (Eds.), Culture and infancy. New York: Academic.
Tulkin, S. R., & Kagan, J. (1972). Mother-child interaction in the first year of life. Child Development, 43, 31–41.
Turke, P. W. (1988). Helpers at the nest: Childcare networks on Ifaluk. In L. Betzig, M. B. Mulder, & P. Turke (Eds.), Human reproductive behaviour: A Darwinian perspective (pp. 173–188). Cambridge: Cambridge University Press.
Van IJzendoorn, M. H., & Hubbard, F. O. A. (2000). Are infant crying and maternal responsiveness during the first year related to infant-mother attachment at 15 months? Attachment & Human Development, 2(3), 371–391.
Van IJzendoorn, M. H., & Sagi, A. (1999). Cross-cultural patterns of attachment: Universal and contextual dimensions. In J. S. P. R. Cassidy (Ed.), Handbook of attachment: Theory, research, and clinical applications (pp. 713–734). New York: Guilford Press.
Wendland-Carro, J., Piccinini, C. A., & Millar, W. S. (1999). The role of an early intervention on enhancing the quality of mother-infant interaction. Child Development, 70(3), 713–721.
Whiting, B. B., & Whiting, J. W. M. (1975). Children of six cultures: A psychocultural analysis. Cambridge: Harvard University Press.
Wolff, P. H. (1969). The natural history of crying and other vocalizations in early infancy. In B. M. Foss (Ed.), Determinants of infant behavior IV: Proceedings of the Tavistock Seminar on mother-infant interaction (pp. 81–109). London: Methuen.
Wood, R. M., & Gustafson, G. E. (2001). Infant crying and adults’ anticipated caregiving responses: acoustic and contextual influences. Child Development, 72(5), 1287–1300.
Zeifman, D. M. (2001). An ethological analysis of human infant crying: answering Tinbergen’s four questions. Developmental Psychobiology, 39(4), 265–285.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kruger, A.C., Konner, M. Who Responds to Crying?. Hum Nat 21, 309–329 (2010). https://doi.org/10.1007/s12110-010-9095-z
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12110-010-9095-z