IDEAS home Printed from https://ideas.repec.org/p/iza/izadps/dp6330.html
   My bibliography  Save this paper

The "Out of Africa" Hypothesis, Human Genetic Diversity, and Comparative Economic Development

Author

Listed:
  • Ashraf, Quamrul

    () (Williams College)

  • Galor, Oded

    () (Brown University)

Abstract

This research argues that deep-rooted factors, determined tens of thousands of years ago, had a significant effect on the course of economic development from the dawn of human civilization to the contemporary era. It advances and empirically establishes the hypothesis that in the course of the exodus of Homo sapiens out of Africa, variation in migratory distance from the cradle of humankind to various settlements across the globe affected genetic diversity and has had a direct long-lasting effect on the pattern of comparative economic development that could not be captured by contemporary geographical, institutional, and cultural factors. In particular, the level of genetic diversity within a society is found to have a hump-shaped effect on development outcomes in the pre-colonial era, reflecting the trade-off between the beneficial and the detrimental effects of diversity on productivity. Moreover, the level of genetic diversity in each country today (i.e., genetic diversity and genetic distance among and between its ancestral populations) has a similar non-monotonic effect on the contemporary levels of income per capita. While the intermediate level of genetic diversity prevalent among the Asian and European populations has been conducive for development, the high degree of diversity among African populations and the low degree of diversity among Native American populations have been a detrimental force in the development of these regions. Further, the optimal level of diversity has increased in the process of industrialization, as the beneficial forces associated with greater diversity have intensified in an environment characterized by more rapid technological progress.

Suggested Citation

  • Ashraf, Quamrul & Galor, Oded, 2012. "The "Out of Africa" Hypothesis, Human Genetic Diversity, and Comparative Economic Development," IZA Discussion Papers 6330, Institute for the Study of Labor (IZA).
  • Handle: RePEc:iza:izadps:dp6330
    as

    Download full text from publisher

    File URL: http://ftp.iza.org/dp6330.pdf
    Download Restriction: no

    Other versions of this item:

    References listed on IDEAS

    as
    1. Quamrul Ashraf & Oded Galor & Ömer Özak, 2010. "Isolation and Development," Journal of the European Economic Association, MIT Press, vol. 8(2-3), pages 401-412, 04-05.
    2. Quamrul Ashraf & Oded Galor, 2011. "Dynamics and Stagnation in the Malthusian Epoch," American Economic Review, American Economic Association, vol. 101(5), pages 2003-2041, August.
    3. Dani Rodrik & Arvind Subramanian & Francesco Trebbi, 2004. "Institutions Rule: The Primacy of Institutions Over Geography and Integration in Economic Development," Journal of Economic Growth, Springer, vol. 9(2), pages 131-165, June.
    4. Guido Tabellini, 2008. "Presidential Address Institutions and Culture," Journal of the European Economic Association, MIT Press, vol. 6(2-3), pages 255-294, 04-05.
    5. Enrico Spolaore & Romain Wacziarg, 2009. "The Diffusion of Development," The Quarterly Journal of Economics, Oxford University Press, vol. 124(2), pages 469-529.
    6. Matthias Doepke, 2004. "Accounting for Fertility Decline During the Transition to Growth," Journal of Economic Growth, Springer, vol. 9(3), pages 347-383, September.
    7. Carl-Johan Dalgaard & Holger Strulik, 2015. "The physiological foundations of the wealth of nations," Journal of Economic Growth, Springer, vol. 20(1), pages 37-73, March.
    8. Stelios Michalopoulos, 2012. "The Origins of Ethnolinguistic Diversity," American Economic Review, American Economic Association, vol. 102(4), pages 1508-1539, June.
    9. La Porta, Rafael & Lopez-de-Silanes, Florencio & Shleifer, Andrei & Vishny, Robert, 1999. "The Quality of Government," Journal of Law, Economics, and Organization, Oxford University Press, vol. 15(1), pages 222-279, April.
    10. Jeffrey M Wooldridge, 2010. "Econometric Analysis of Cross Section and Panel Data," MIT Press Books, The MIT Press, edition 2, volume 1, number 0262232588, January.
    11. John Luke Gallup & Jeffrey D. Sachs & Andrew D. Mellinger, 1999. "Geography and Economic Development," International Regional Science Review, , vol. 22(2), pages 179-232, August.
    12. Galor, Oded, 2005. "From Stagnation to Growth: Unified Growth Theory," Handbook of Economic Growth,in: Philippe Aghion & Steven Durlauf (ed.), Handbook of Economic Growth, edition 1, volume 1, chapter 4, pages 171-293 Elsevier.
    13. Edward L. Glaeser & Rafael La Porta & Florencio Lopez-de-Silanes & Andrei Shleifer, 2004. "Do Institutions Cause Growth?," Journal of Economic Growth, Springer, vol. 9(3), pages 271-303, September.
    14. Giuliano, Paola & Spilimbergo, Antonio & Tonon, Giovanni, 2006. "Genetic, Cultural and Geographical Distances," IZA Discussion Papers 2229, Institute for the Study of Labor (IZA).
    15. Oded Galor, 2009. "2008 Lawrence R. Klein Lecture –Comparative Economic Development: Insights from Unified Growth Theory," Working Papers 2009-10, Brown University, Department of Economics.
    16. Jacob L. Weisdorf, 2005. "From Foraging To Farming: Explaining The Neolithic Revolution," Journal of Economic Surveys, Wiley Blackwell, vol. 19(4), pages 561-586, September.
    17. Robert E. Hall & Charles I. Jones, 1999. "Why do Some Countries Produce So Much More Output Per Worker than Others?," The Quarterly Journal of Economics, Oxford University Press, vol. 114(1), pages 83-116.
    18. Luigi Guiso & Paola Sapienza & Luigi Zingales, 2009. "Cultural Biases in Economic Exchange?," The Quarterly Journal of Economics, Oxford University Press, vol. 124(3), pages 1095-1131.
    19. Greif, Avner, 1993. "Contract Enforceability and Economic Institutions in Early Trade: the Maghribi Traders' Coalition," American Economic Review, American Economic Association, vol. 83(3), pages 525-548, June.
    20. John Luke Gallup & Jeffrey D. Sachs & Andrew Mellinger, 1999. "Geography and Economic Development," CID Working Papers 01A, Center for International Development at Harvard University.
    21. Oded Galor, 2011. "Unified Growth Theory," Economics Books, Princeton University Press, edition 1, number 9477.
    22. R. Haveman & K. Holden & B. Wolfe & P. Smith & K. Wilson, "undated". "The Changing Economic Status of U.S. Disabled Men: Trends and Their Determinants, 1982–1991," Institute for Research on Poverty Discussion Papers 1190-99, University of Wisconsin Institute for Research on Poverty.
    23. Olsson, Ola & Hibbs, Douglas Jr., 2005. "Biogeography and long-run economic development," European Economic Review, Elsevier, vol. 49(4), pages 909-938, May.
    24. Klaus Desmet & Michel Breton & Ignacio Ortuño-Ortín & Shlomo Weber, 2011. "The stability and breakup of nations: a quantitative analysis," Journal of Economic Growth, Springer, vol. 16(3), pages 183-213, September.
    25. William T. Alpert & Stephen A. Woodbury, 2000. "Introduction," Book chapters authored by Upjohn Institute researchers,in: William T. Alpert & Stephen A. Woodbury (ed.), Employee Benefits and Labor Markets in Canada and the United States, chapter 1, pages 1-12 W.E. Upjohn Institute for Employment Research.
    26. Montalvo, Jose G. & Reynal-Querol, Marta, 2005. "Ethnic diversity and economic development," Journal of Development Economics, Elsevier, vol. 76(2), pages 293-323, April.
    27. Conley, T. G., 1999. "GMM estimation with cross sectional dependence," Journal of Econometrics, Elsevier, vol. 92(1), pages 1-45, September.
    28. Pagan, Adrian, 1984. "Econometric Issues in the Analysis of Regressions with Generated Regressors," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 25(1), pages 221-247, February.
    Full references (including those not matched with items on IDEAS)

    More about this item

    Keywords

    Neolithic Revolution; population density; comparative development; human genetic diversity; Out of Africa hypothesis; land productivity; Malthusian stagnation;

    JEL classification:

    • N10 - Economic History - - Macroeconomics and Monetary Economics; Industrial Structure; Growth; Fluctuations - - - General, International, or Comparative
    • N30 - Economic History - - Labor and Consumers, Demography, Education, Health, Welfare, Income, Wealth, Religion, and Philanthropy - - - General, International, or Comparative
    • N50 - Economic History - - Agriculture, Natural Resources, Environment and Extractive Industries - - - General, International, or Comparative
    • O10 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - General
    • O50 - Economic Development, Innovation, Technological Change, and Growth - - Economywide Country Studies - - - General
    • Z10 - Other Special Topics - - Cultural Economics - - - General

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:iza:izadps:dp6330. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Mark Fallak). General contact details of provider: http://www.iza.org .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.