The Relationship between the Rise in Monogamy and Brain Size in Humans:
DOI:
https://doi.org/10.47611/jsrhs.v13i4.8069Keywords:
Brain size, Relationship, behavioral, chimpanzee, human, monogomy, biology, evolution, evolutionary biologyAbstract
There is a positive correlation between monogamy and the brain size in most animals. This is mostly due to monogamous relationships being much deeper in connection as well as the advent of monogamy stopping most sexual competition and fighting, allowing for deeper connections within the group and increased survival of the group as a whole. This paper examines the relationship between monogamy and brain size in humans, looking through the lens of two main theories: the ecological theory and the social intelligence hypothesis. Through our most common mating system, our research suggests that a major reason for the evolution of intelligence and the increase in brain size is due to monogamy as a whole. The paper discusses the evolutionary advantage of monogamy and its relationship with brain size.
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Alexander G. Ophir (2012, January 20). Oxytocin receptor density is associated with male mating tactics and social monogamy. Hormones and Behavior.
González-Forero, M., & Gardner, A. (2018). Inference of ecological and social drivers of human brain-size evolution. Nature, 557(7706), 554–557. https://doi.org/10.1038/s41586-018-0127-x
Google Books. (2014). Google.com. https://www.google.com/books/edition/_/35K1AwAAQBAJ?hl=en&gbpv=1&pg=PA1&dq=monogamy+and+intelligence
Johnson-Ulrich, L. (2018). The Social Intelligence Hypothesis. East Lansing: Springer.
Kaas, J. H. (2006, November 7). Evolution of the neocortex: Current biology. Cell Press.
Lei, Y. (2023). Sociality and self-awareness in animals. Frontiers in Psychology, 13. https://doi.org/10.3389/fpsyg.2022.1065638
Nakahashi, W., & Horiuchi, S. (2012). Evolution of ape and human mating systems. Journal of Theoretical Biology, 296, 56–64. https://doi.org/10.1016/j.jtbi.2011.11.026
Opie, Christopher, Quentin D. Atkinson, Robin I. M. Dunbar, and Susanne Shultz. 2013. “Male Infanticide Leads to Social Monogamy in Primates.” Proceedings of the National Academy of Sciences 110 (33): 13328–32. https://doi.org/10.1073/pnas.1307903110.
Pusey, A. E., & Schroepfer-Walker, K. (2013). Female competition in chimpanzees. Philosophical Transactions of the Royal Society B: Biological Sciences, 368(1631), 20130077. https://doi.org/10.1098/rstb.2013.0077
Schillaci, M. A. (2008). Primate Mating Systems and the Evolution of Neocortex Size. Journal of Mammalogy, 89(1), 58–63. https://doi.org/10.1644/06-mamm-a-417.1
Uomini, N., Fairlie, J., Gray, R. D., & Griesser, M. (2020). Extended parenting and the evolution of cognition. Philosophical Transactions of the Royal Society B: Biological Sciences, 375(1803), 20190495. https://doi.org/10.1098/rstb.2019.0495
Workman, L. (2016). Biparental Care. Springer EBooks, 1–3. https://doi.org/10.1007/978-3-319-16999-6_1910-1
Ziegler, T. E., Sosa, M. E., & Colman, R. J. (2017). Fathering style influences health outcome in common marmoset (Callithrix jacchus) offspring. PLOS ONE, 12(9), e0185695–e0185695.
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