Skip to main content Accessibility help
×
Hostname: page-component-848d4c4894-x24gv Total loading time: 0 Render date: 2024-05-31T01:32:21.674Z Has data issue: false hasContentIssue false

16 - The Evolution and Endocrinology of Human Behavior: a Focus on Sex Differences and Reproduction

Published online by Cambridge University Press:  05 August 2012

Michael P. Muehlenbein
Affiliation:
Indiana University, Bloomington
Get access

Summary

INTRODUCTION

The aim of this chapter is to highlight some of the core concepts and empirical findings concerning the evolution and endocrinology of human behavior. To do this, we first review some basic principles in the evolution and endocrinology of behavior. These principles have been derived from studies with various taxa rather than humans alone. Indeed, nonhuman theoretical and empirical findings have inspired some of the human research, and the research on humans should be viewed in comparative contexts. Next, we investigate a series of examples illustrating empirical research on the evolution and endocrinology of human behavior with a focus on sex differences and reproductive behavior. These examples have been chosen because they illustrate well the relationships between human hormones and behavior and they offer enough data to enable drawing some conclusions. For some of these examples, cross-cultural data are also available, helping show the ways endocrine mechanisms underlie human behavior across variable sociocultural environments.

A comprehensive literature review of human findings, much less nonhuman behavioral endocrinology, would involve a very long book rather than a book chapter. Yet in the course of reviewing some well-documented examples, readers may gain an appreciation for the excitement of this research niche as well as the types of research questions remaining to be addressed. For the unavoidably hooked student or researcher, please see Ellison and Gray (2009), Carter et al. (2005), Adkins-Regan (2005), Nelson (2005), Sapolsky (2004), Becker et al. (2002), and Pfaff et al. (2002) for excellent overviews of hormones and behavior.

Type
Chapter
Information
Publisher: Cambridge University Press
Print publication year: 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Adkins-Regan, , , E. (2005). Hormones and Animal Social Behavior. Princeton: Princeton University Press.Google Scholar
Altemus, M., Deuster, P. A., Galliven, E., et al. (1995). Suppression of hypothalamic-pituitary-adrenal axis responses to stress in lactating women. Journal of Clinical Endocrinology and Metabolism, 80, 2954–2959.Google ScholarPubMed
Archer, J. and Lloyd, B. (2002). Sex and Gender, 2nd edn. Cambridge: Cambridge University Press.CrossRefGoogle Scholar
Arnold, A. P. (2002). Concepts of genetic and hormonal induction of vertebrate sexual differentiation in the twentieth century, with special reference to the brain. In Hormones, Brain and Behavior, vol. 4, Pfaff, D. W., Arnold, A. P., et al. (eds). San Diego, CA: Academic Press, pp. 105–135.CrossRefGoogle Scholar
Barkow, J. H., Cosmides, L. and Tooby, J. (eds) (1992). The Adapted Mind: Evolutionary Psychology and the Generation of Culture. Oxford: Oxford University Press.Google Scholar
Barrett, L., Dunbar, R. and Lycett, J. (2002). Human Evolutionary Psychology. Princeton: Princeton University Press.CrossRefGoogle Scholar
Bartels, A. and Zeki, S. (2004). The neural correlates of maternal and romantic love. Neuroimage, 21, 1155–1166.CrossRefGoogle ScholarPubMed
Becker, J. B., Breedlove, S. M., Crews, D., et al. (eds) (2002). Behavioral Endocrinology, 2nd edn. Cambridge, MA: MIT Press.Google Scholar
Berg, S. J. and Wynne-Edwards, K. E. (2001). Changes in testosterone, cortisol, and estradiol levels in men becoming fathers. Mayo Clinic Proceedings, 76, 582–592.CrossRefGoogle ScholarPubMed
Betzig, L. (ed.) (1997). Human Nature: a Critical Reader. Oxford: Oxford University Press.Google Scholar
Bloch, M., Daly, R. C. and Rubinow, D. R. (2003). Endocrine factors in the etiology of postpartum depression. Comparative Psychiatry, 44, 234–246.CrossRefGoogle ScholarPubMed
Bolhuis, J. J. and Giraldeau, L.-A. (2005). The Behavior of Animals: Mechanisms, Function, and Evolution. Malden, MA: Blackwell.Google Scholar
Book, A. S. and Quinsey, V. L. (2005). Re-examining the issues: a response to Archer et al. Aggressive and Violent Behavior, 10, 637–646.CrossRefGoogle Scholar
Booth, A. and Dabbs, J. M. (1993). Testosterone and men's marriages. Social Forces, 72, 463–477.CrossRefGoogle Scholar
Brewis, A. and Meyer, M. (2005). Demographic evidence that human ovulation is undetectable (at least in pair bonds). Current Anthropology, 46, 465–471.CrossRefGoogle Scholar
Brizendine, L. (2006). The Female Brain. New York: Morgan Road Books.Google Scholar
Buckwalter, J. G., Buckwalter, D. K., Bluestein, B. W., et al. (2001). Pregnancy and post partum: changes in cognition and mood. Progress in Brain Research, 133, 303–319.CrossRefGoogle Scholar
Bullivant, S. B., Sellergren, S. A., Stern, K., et al. (2004). Women's sexual experience during the menstrual cycle: identification of the sexual phase by noninvasive measurement of luteinizing hormone. Journal of Sex Research, 41, 82–93.CrossRefGoogle ScholarPubMed
Burnham, T. C., Chapman, J. F., Gray, P. B., et al. (2003). Men in committed, romantic relationships have lower testosterone. Hormones and Behavior, 44, 119–122.CrossRefGoogle ScholarPubMed
Buss, D. M. (2003). Evolutionary Psychology: the New Science of the Mind, 2nd edn. New Needham, MA: Allyn and Bacon.Google Scholar
Buss, D. M. (ed.) (2005). Handbook of Evolutionary Psychology. Hoboken, NJ: Wiley.Google Scholar
Carter, C. (1998). Neuroendocrine perspectives on social attachment and love. Psychoneuroendocrinology, 23, 779–818.CrossRefGoogle ScholarPubMed
Carter, C. S. (2007). Sex differences in oxytocin and vasopressin: implications for autism spectrum disorders?Behavioural Brain Research, 176, 170–186.CrossRefGoogle ScholarPubMed
Carter, C. S., Ahnert, L., Grossman, K. E., et al. (eds) (2005). Attachment and Bonding: a New Synthesis. Cambridge, MA: MIT Press.Google Scholar
Cartwright, J. (2000). Evolution and Human Behavior. Cambridge, MA: MIT Press.Google Scholar
Coccaro, E., Kavoussi, R., Hauger, R., et al. (1998). Cerebrospinal fluid vasopressin levels: correlates with aggression and serotonin function in personality-disordered subjects. Archives of General Psychiatry, 55, 708–714.CrossRefGoogle ScholarPubMed
Cohan, C. L., Booth, A. and Granger, D. A. (2003). Gender moderates the relationship between testosterone and marital interaction. Journal of Family Psychology, 17, 29–40.CrossRefGoogle ScholarPubMed
Cohen-Bendahan, C. C. C., Beek, C. and Berenbaum, S. A. (2005). Prenatal sex hormone effects on child and adult sex-typed behavior: methods and findings. Neuroscience and Biobehavioral Reviews, 29, 353–384.CrossRefGoogle ScholarPubMed
Judicibus, M. A. and McCabe, M. (2002). Psychological factors and the sexuality of pregnant and postpartum women. Journal of Sex Research, 39, 94–103.CrossRefGoogle Scholar
Delahunty, K. M., McKay, D. W., Noseworthy, D. E., et al. (2007). Prolactin responses to infant cues in men and women: effects of parental experience and recent infant contact. Hormones and Behavior, 51, 213–220.CrossRefGoogle ScholarPubMed
Delville, Y., Mansour, K. and Ferris, C. (1996). Testosterone facilitates aggression by modulating vasopressin receptors in the hypothalamus. Physiology and Behavior, 60, 25–29.CrossRefGoogle ScholarPubMed
Dixson, A. F. (1998). Primate Sexual Behavior. Oxford: Oxford University Press.Google Scholar
Eaton, S. B., Pike, M. C., Short, R. V., et al. (1994). Women's reproductive cancers in evolutionary context. Quarterly Review of Biology, 69, 353–367.CrossRefGoogle ScholarPubMed
Ellison, P. T. (2001). On Fertile Ground. Cambridge, MA: Harvard University Press.Google Scholar
Ellison, P. T. and Gray, P. B. (eds) (2009). Endocrinology of Social Relationships. Cambridge, MA: Harvard University Press.Google Scholar
Fessler, D. M. T. (2003). No time to eat: an adaptationist account of periovulatory behavioral changes. Quarterly Review of Biology, 78, 3–21.CrossRefGoogle ScholarPubMed
Ford, C. S. and Beach, F. A. (1951). Patterns of Sexual Behavior. New York: Ace.Google Scholar
Fleming, A. S. (2005). Plasticity of innate behavior: experiences throughout life affect maternal behavior and its neurobiology. In Attachment and Bonding: a New Synthesis, Carter, C. S., Ahnert, L., Grossman, K. E., et al. (eds). Cambridge, MA: MIT Press, pp. 137–168.Google Scholar
Fleming, A. S., Ruble, D., Krieger, H., et al. (1997). Hormonal and experiential correlates of maternal responsiveness during pregnancy and the peuerperium in human mothers. Hormones and Behavior, 31, 145–158.CrossRefGoogle Scholar
Fleming, A., Corter, C., Stallings, J., et al. (2002). Testosterone and prolactin are associated with emotional responses to infant cries in new fathers. Hormones and Behavior, 42, 399–413.CrossRefGoogle ScholarPubMed
Flinn, M. V., Ward, C. V. and Noone, R. V. (2005). Hormones and the human family. In Handbook of Evolutionary Psychology, Buss, D. (ed.). Hoboken, NJ: Wiley, pp. 552–583.Google Scholar
Fries, A. B. W., Ziegler, T. E., Kurian, J. R., et al. (2005). Early experience in humans is associated with changes in neuropeptides critical for regulating social behavior. Proceedings of the National Academy of Sciences of the United States of America, 102, 17237–17240.CrossRefGoogle Scholar
Gangestad, S. W. and Thornhill, R. (1998). Menstrual cycle variation in women's preference for the scent of symmetrical men. Proceedings of the Royal Society of London. Series B, 262, 727–733.Google Scholar
Gangestad, S. W., Thornhill, R., Flinn, M. V., et al. (2005a). Men's testosterone and life history in a Caribbean rural village. Paper presented at the Human Behavior and Evolution Society meeting, June 2005, Austin, TX.Google Scholar
Gangestad, S. W., Thornhill, R. and Garver-Apgar, C. E. (2005b). Adaptations to ovulation. In Handbook of Evolutionary Psychology, Buss, D. (ed.). New York: Wiley, pp. 344–371.Google Scholar
Gaulin, S. J. C. and McBurney, D. H. (2004). Evolutionary Psychology, 2nd edn. Upper Saddle River, NJ: Prentice Hall.Google Scholar
Gray, P. B. (2003). Marriage, parenting and testosterone variation among Kenyan Swahili men. American Journal of Physical Anthropology, 122, 279–286.CrossRefGoogle ScholarPubMed
Gray, P. B. and Campbell, B. C. (2009). Human male testosterone, pair bonding and fatherhood. In Endocrinology of Social Relationships, Ellison, P. T. and Gray, P. B. (eds). Cambridge, MA: Harvard University Press, pp. 270–292.Google Scholar
Gray, P. B., Kahlenberg, S. M., Barrett, E. S., et al. (2002). Marriage and fatherhood are associated with lower testosterone in males. Evolution and Human Behavior, 23, 193–201.CrossRefGoogle Scholar
Gray, P. B., Campbell, B. C., Marlowe, F. W., et al. (2004a). Social variable predict between-subject but not day-to-day variation in the testosterone of US men. Psychoneuroendocrinology, 29, 1153–1162.CrossRefGoogle Scholar
Gray, P. B., Chapman, J. F., Burnham, T. C., et al. (2004b). Human male pair bonding and testosterone. Human Nature, 15, 119–131.CrossRefGoogle ScholarPubMed
Gray, P. B., Yang, C. J. and Pope, H. G. (2006). Fathers have lower salivary testosterone levels than unmarried men and married non-fathers in Beijing, China. Proceedings of the Royal Society of London. Series B, 273, 333–339.CrossRefGoogle ScholarPubMed
Gray, P. B., Parkin, J. C. and Samms-Vaughan, M. E. (2007a). Hormonal correlates of human paternal interactions: a hospital-based investigation in urban Jamaica. Hormones and Behavior, 52, 499–507.CrossRefGoogle ScholarPubMed
Gray, P. B., Ellison, P. T. and Campbell, B. C. (2007b). Testosterone and marriage among Ariaal men of northern Kenya. Current Anthropology, 48, 750–755.CrossRefGoogle Scholar
Greenspan, F. S. and Gardner, D. G. (eds) (2001). Basic and Clinical Endocrinology. New York: McGraw Hill.Google Scholar
Grewen, K., Girdler, S., Amico, J., et al. (2005). Effects of partner support on resting oxytocin, cortisol, norepinephrine, and blood pressure before and after warm partner contact. Psychosomatic Medicine, 67, 531–538.CrossRefGoogle ScholarPubMed
Heinrichs, M., Meinlschmidt, G., Neumann, I., et al. (2001). Effects of suckling on hypothalamic-pituitary-adrenal axis responses to psychosocial stress in postpartum lactating women. Journal of Clinical Endocrinology and Metabolism, 86, 4798–4804.CrossRefGoogle ScholarPubMed
Hines, M. (2004). Brain Gender. New York: Oxford University Press.Google Scholar
Hrdy, S. (1999). Mother Nature. New York: Pantheon.Google Scholar
Irons, W. (1998). Adaptively relevant environments versus the environment of evolutionary adaptedness. Evolutionary Anthropology, 6, 194–204.3.0.CO;2-B>CrossRefGoogle Scholar
Jones, B. C., Little, A. C., Boothroyd, L., et al. (2005). Commitment to relationships and preferences for femininity and apparent health in faces are strongest on days of the menstrual cycle when progesterone level is high. Hormones and Behavior, 48, 283–290.CrossRefGoogle ScholarPubMed
Ketterson, E. D. and Nolan, V. (1999). Adaptation, exaptation, and constraint: a hormonal perspective. American Naturalist, 154S, S4–S25.CrossRefGoogle Scholar
Keverne, E. B. (2005). Neurobiological and molecular approaches to attachment and bonding. In Attachment and Bonding: A New Synthesis, Carter, C. S., Ahnert, L., Grossman, K. E., et al. (eds). Cambridge, MA: MIT Press, pp. 101–117.Google Scholar
Kirsch, P., Esslinger, C., Chen, Q., et al. (2005). Oxytocin modulates neural circuitry for social cognition and fear in humans. Journal of Neuroscience, 25, 11489–11493.CrossRefGoogle ScholarPubMed
Konner, M. (2002). The Tangled Wing: Biological Constraints on the Human Spirit, 2nd edn. New York: Times Books.Google Scholar
Kosfeld, M., Heinrichs, M., Zak, P. J., et al. (2005). Oxytocin increases trust in humans. Nature, 435, 673–676.CrossRefGoogle ScholarPubMed
Kruger, T., Haake, P., Chereath, D., et al. (2003). Specificity of the neuroendocrine response to orgasm during sexual arousal in men. Journal of Endocrinology, 177, 57–64.CrossRefGoogle ScholarPubMed
Landgraf, R. and Holsboer, F. (2005). The involvement of neuropeptides in evolution, signaling, behavioral regulation and psychopathology: focus on vasopressin. Drug Development Research, 65, 185–190.CrossRefGoogle Scholar
Laumann, E. O., Gagnon, J. H., Michael, R. T., et al. (1994). Social Organization of Sexuality: Sexual Practices in the United States. Chicago: University of Chicago Press.Google Scholar
Light, K. C., Grewen, K. M. and Amico, J. A. (2005). More frequent partner hugs and higher oxytocin levels are linked to lower blood pressure and heart rate in premenopausal women. Biological Psychology, 69, 5–21.CrossRefGoogle ScholarPubMed
Lippa, R. A. (2002). Gender, Nature and Nurture. Mahwah, NJ:Erlbaum.Google Scholar
Lordkipanidze, D., Lordkipanidze, D., Vekua, A., et al. (2007). Postcranial evidence from early Homo from Dmanisi, Georgia. Nature, 449, 305–310.CrossRefGoogle ScholarPubMed
Low, B. (2000). Why Sex Matters. Princeton: Princeton University Press.Google Scholar
Maccoby, E. E. (1998). The Two Sexes: Growing up Apart, Coming Together. Cambridge: Harvard University Press.Google Scholar
Magid, K. W., Chatterton, R. T., Uddin Ahamed, F., et al. (2006). No effect of marriage or fatherhood on salivary testosterone levels in Bangladeshi men. Poster presented at the Human Behavior and Evolution Society meeting, June 2006, Philadelphia, PA.Google Scholar
Marlowe, F. (2000). Paternal investment and the human mating system. Behavioural Processes, 51, 45–61.CrossRefGoogle ScholarPubMed
Matthiesen, A. S., Ransjo-Arvidson, A. B. and Nissen, E. (2001). Postpartum maternal oxytocin release by newborns: effects of infant hand massage and sucking. Birth, 28, 13–19.CrossRefGoogle ScholarPubMed
Mazur, A., and Michalek, J. (1998). Marriage, divorce, and male testosterone. Social Forces, 77, 315–330.CrossRefGoogle Scholar
McIntyre, M. H, Gangestad, S. W., Gray, P. B., et al. (2006). Romantic involvement often reduces men's testosterone levels – but not always: the moderating roles of extra-pair sexual interest. Journal of Personality and Social Psychology, 91, 642–651.CrossRefGoogle ScholarPubMed
Migeon, C. J. and Wisniewski, A. B. (1998). Sexual differentiation: from genes to gender. Hormone Research, 50, 245–251.CrossRefGoogle Scholar
Moline, M. L., Broch, L., Zak, R., et al. (2003). Sleep in women across the life cycle from adulthood through menopause. Sleep Medicine Review, 7, 155–177.CrossRefGoogle ScholarPubMed
Nelson, R. J. (2005). An Introduction to Behavioral Endocrinology, 3rd edn. Sunderland, MA: Sinauer.Google Scholar
Odendaal, J. and Meintjes, R. (2003). Neurophysiological correlates of affiliative behaviour between humans and dogs. Veterinary Journal, 165, 296–301.CrossRefGoogle Scholar
Panksepp, J., Moskal, J. R., Panksepp, J. B., et al. (2002). Comparative approaches in evolutionary psychology: molecular neuroscience meets the mind. Neuroendocrinology Letters, 23, 105–115.Google ScholarPubMed
Pfaff, D. W., Arnold, A. P., Etgen, A. M., et al. (eds) (2002). Hormones, Brain and Behavior. San Diego, CA: Academic Press.Google Scholar
Piersma, T. and Drent, J. (2003). Phenotypic flexibility and the evolution of organismal design. Trends in Evolution and Ecology, 18, 228–233.CrossRefGoogle Scholar
Pillsworth, E. G., Haselton, M. G. and Buss, D. M. (2004). Ovulatory shifts in female sexual desire. Journal of Sex Research, 41, 55–65.CrossRefGoogle ScholarPubMed
Pinker, S. (1997). How the Mind Works. New York: Norton.Google Scholar
Quartz, S. R. and Sejnowski, T. J. (2002). Liars, Lovers, and Heroes: What the New Brain Science Reveals about How We Become Who We Are. New York: William Morrow.Google Scholar
Rathus, S. A., Nevid, J. S. and Fichner-Rathus, L. (2005). Human Sexuality in a World of Diversity, 6th edn. Boston, MA: Allyn and Bacon.Google Scholar
Reed Larsen, P., Kronenberg, H. M., Melmed, S., et al. (eds) (2003). Williams Textbook of Endocrinology, 10th edn. New York: Elsevier.Google Scholar
Reichard, U. H. and Boesch, C. (eds) (2003). Monogamy: Mating Strategies and Partnerships in Birds, Humans and Other Mammals. Cambridge: Cambridge University Press.CrossRefGoogle Scholar
Richerson, P. J. and Boyd, R. (2005). Not by Genes Alone: How Culture Transformed Human Evolution. Chicago: University of Chicago Press.Google Scholar
Roughgarden, J. (2004). Evolution's Rainbow: Diversity, Gender, and Sexuality in Nature and People. Berkeley, CA: University of California Press.Google Scholar
Sakaguchi, K., Oki, M., Hasegawa, T., et al. (2006). Influence of relationship status and personality traits on salivary testosterone among Japanese men. Personality and Individual Differences, 41, 1077–1087.CrossRefGoogle Scholar
Sanchez, R., Parkin, J. C., Chen, J., et al. (2009). Oxytocin, vasopressin and human social behavior. In Endocrinology of Social Relationships, Ellison, P. T. and Gray, P. G. (eds). Cambridge, MA: Harvard University Press, pp. 319–338.Google Scholar
Sapolsky, R. (2004). Why Zebras Don't Get Ulcers, 3rd edn. New York: Holt.Google Scholar
Schmitt, D. P. (2005). Sociosexuality from Argentina to Zimbabwe: a 48-nation study of sex, culture, and strategies of human mating. Behavioral and Brain Sciences, 28, 247–275.CrossRefGoogle ScholarPubMed
Storm, E. E. and Tecott, L. H. (2005). Social circuits: peptidergic regulation of mammalian social behavior. Neuron, 47, 483–486.CrossRefGoogle ScholarPubMed
Storey, A. E., Walsh, C. J., Quinton, R. L., et al. (2000). Hormonal correlates of paternal responsiveness in new and expectant fathers. Evolution and Human Behavior, 21, 79–95.CrossRefGoogle ScholarPubMed
Thompson, R., Gupta, S., Miller, K., et al. (2004). The effects of vasopressin on human facial responses related to social communication. Psychoneuroendocrinology, 29, 35–48.CrossRefGoogle ScholarPubMed
Thompson, R. R., George, K., Walton, J. C., et al. (2006). Sex-specific influences of vasopressin on human social cognition. Proceedings of the National Academy of Sciences of the United States of America, 103, 7889–7994.CrossRefGoogle Scholar
Tinbergen, N. (1963). On aims and methods of ethology. Zeitschrift fur Tierpsychologie, 20, 410–433.CrossRefGoogle Scholar
Uvnas-Moberg, K. (1998). Oxytocin may mediate the benefits of positive social interaction and emotions. Psychoneuroendocrinology, 23, 819–835.CrossRefGoogle ScholarPubMed
Anders, S. and Watson, N. (2006a). Social neuroendocrinology: effects of states and behaviours on human neuroendocrine function. Human Nature, 17, 212–237.CrossRefGoogle Scholar
Anders, S. and Watson, N. (2006b). Relationship status and testosterone in North American heterosexual and non-heterosexual men and women: cross-sectional and longitudinal data. Psychoneuroendocrinology, 31, 715–723.CrossRefGoogle ScholarPubMed
Anders, S. and Watson, N. V. (2007). Testosterone levels in women and men who are single, in long-distance relationships, or same-city relationships. Hormones and Behavior, 51, 286–291.CrossRefGoogle ScholarPubMed
Vilain, E. and McCabe, R. B. (1998). Minireview: mammalian sex determination: from gonads to brain. Molecular Genetics and Metabolism, 65, 74–84.CrossRefGoogle Scholar
Sydow, K. (1999). Sexuality during pregnancy and after childbirth: a metacontent analysis of 59 studies. Journal of Psychosomatic Research, 47, 27–49.CrossRefGoogle Scholar
Wallen, K. (2005). Hormonal influences on sexually differentiated behavior in nonhuman primates. Frontiers in Neuroendocrinology, 26, 7–26.CrossRefGoogle ScholarPubMed
Whiting, J. and Whiting, B. (1975). Aloofness and intimacy of husbands and wives: a cross-cultural study. Ethos, 3, 183–207.CrossRefGoogle Scholar
Wilcox, A. J., Baird, D. D., Dunson, D. B., et al. (2004). On the frequency of intercourse around ovulation: evidence for biological influences. Human Reproduction, 19, 1539–1543.CrossRefGoogle ScholarPubMed
Wingfield, J. C., Hegner, R. E., Dufty, A. M., et al. (1990). The “challenge hypothesis”: theoretical implications for patterns of testosterone secretion, mating systems, breeding strategies. American Naturalist, 136, 829–846.CrossRefGoogle Scholar
Young, L. J. and Wang, Z. (2004). The neurobiology of pair bonding. Nature Neuroscience, 7, 1048–1054.CrossRefGoogle ScholarPubMed
Ziegler, T. E. (2000). Hormones associated with non-maternal infant care: a review of mammalian and avian studies. Folia Primatologia, 71, 6–21.CrossRefGoogle ScholarPubMed

Save book to Kindle

To save this book to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

Available formats
×