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A Malthusian model of hybridization in human evolution

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  • Chu, Angus C.

Abstract

Early modern humans interbred with archaic humans. To explore this phenomenon, we develop a Malthusian growth model with hybridization in human evolution. Our hunting-gathering Malthusian economy features two initial human populations. We derive population dynamics and find that the more fertile population survives whereas the less fertile one eventually becomes extinct. During this natural-selection process, a hybrid human population emerges and survives in the long run. This finding explains why modern humans still carry DNA from archaic humans. A higher hybridization rate reduces long-run population size but raises long-run output per capita for the surviving populations in this Malthusian economy.

Suggested Citation

  • Chu, Angus C., 2024. "A Malthusian model of hybridization in human evolution," MPRA Paper 121218, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:121218
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    References listed on IDEAS

    as
    1. Oded Galor & Omer Moav, 2002. "Natural Selection and the Origin of Economic Growth," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 117(4), pages 1133-1191.
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    7. Chu, Angus C. & Xu, Rongxin, 2024. "From Neolithic Revolution to industrialization," Macroeconomic Dynamics, Cambridge University Press, vol. 28(3), pages 699-717, April.
    8. Quamrul H. Ashraf & Oded Galor, 2018. "The Macrogenoeconomics of Comparative Development," Journal of Economic Literature, American Economic Association, vol. 56(3), pages 1119-1155, September.
    9. Collins, Jason & Baer, Boris & Weber, Ernst Juerg, 2014. "Economic Growth And Evolution: Parental Preference For Quality And Quantity Of Offspring," Macroeconomic Dynamics, Cambridge University Press, vol. 18(8), pages 1773-1796, December.
    10. Oded Galor & Marc Klemp, 2019. "Human Genealogy Reveals a Selective Advantage to Moderate Fecundity," Working Papers 2019-1, Brown University, Department of Economics.
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    More about this item

    Keywords

    Ancient human interbreeding; natural selection; Malthusian growth theory;
    All these keywords.

    JEL classification:

    • N10 - Economic History - - Macroeconomics and Monetary Economics; Industrial Structure; Growth; Fluctuations - - - General, International, or Comparative
    • O13 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Agriculture; Natural Resources; Environment; Other Primary Products
    • Q56 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environment and Development; Environment and Trade; Sustainability; Environmental Accounts and Accounting; Environmental Equity; Population Growth

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