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Heterogeneity and Productivity

Author

Listed:
  • Quamrul Ashraf
  • Oded Galor
  • Marc Klemp

Abstract

This research explores the effects of within-group heterogeneity on group-level productivity. It establishes that observed genetic diversity of 230 worldwide ethnic groups, as well as predicted genetic diversity of 1,331 ethnic groups across the globe, has a hump-shaped effect on economic prosperity, reflecting the trade-off between the beneficial and the detrimental effects of diversity on productivity. Moreover, the study demonstrates that variations in within-ethnic-group genetic diversity across ethnic groups contribute to ethnic and thus regional variation in economic development within a country.

Suggested Citation

  • Quamrul Ashraf & Oded Galor & Marc Klemp, 2015. "Heterogeneity and Productivity," Working Papers 2015-4, Brown University, Department of Economics.
    • Handle: RePEc:bro:econwp:2015-4
    as

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    References listed on IDEAS

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    1. Nathan Nunn & Diego Puga, 2012. "Ruggedness: The Blessing of Bad Geography in Africa," The Review of Economics and Statistics, MIT Press, vol. 94(1), pages 20-36, February.
    2. Kleibergen, Frank & Paap, Richard, 2006. "Generalized reduced rank tests using the singular value decomposition," Journal of Econometrics, Elsevier, vol. 133(1), pages 97-126, July.
    3. Quamrul Ashraf & Oded Galor, 2013. "The 'Out of Africa' Hypothesis, Human Genetic Diversity, and Comparative Economic Development," American Economic Review, American Economic Association, vol. 103(1), pages 1-46, February.
    4. Quamrul Ashraf & Oded Galor & Marc Klemp, 2014. "The Out of Africa Hypothesis of Comparative Development Reflected by Nighttime Light Intensity," Working Papers 2014-4, Brown University, Department of Economics.
    5. Quamrul Ashraf & Oded Galor, 2008. "Human Genetic Diversity and Comparative Economic Development," 2008 Meeting Papers 617, Society for Economic Dynamics.
    6. Stelios Michalopoulos, 2012. "The Origins of Ethnolinguistic Diversity," American Economic Review, American Economic Association, vol. 102(4), pages 1508-1539, June.
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    11. Quamrul Ashraf & Oded Galor, 2013. "Genetic Diversity and the Origins of Cultural Fragmentation," American Economic Review, American Economic Association, vol. 103(3), pages 528-533, May.
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    Cited by:

    1. Frédéric Docquier & Riccardo Turati & Jérôme Valette & Chrysovalantis Vasilakis, 2020. "Birthplace diversity and economic growth: evidence from the US states in the Post-World War II period [Cultural diversity and economic growth: evidence from the US during the age of mass migration]," Journal of Economic Geography, Oxford University Press, vol. 20(2), pages 321-354.
    2. David Figlio & Paola Giuliano & Riccardo Marchingiglio & Umut Ozek & Paola Sapienza, 2024. "Diversity in Schools: Immigrants and the Educational Performance of U.S.-Born Students," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 91(2), pages 972-1006.
    3. Zhaobin Fan & Shujuan Huang & W. Robert J. Alexander, 2017. "Do National Cultural Traits Affect Comparative Advantage in Cultural Goods?," Sustainability, MDPI, vol. 9(7), pages 1-16, July.
    4. C. Justin Cook & Jason M. Fletcher, 2018. "High-school genetic diversity and later-life student outcomes: micro-level evidence from the Wisconsin Longitudinal Study," Journal of Economic Growth, Springer, vol. 23(3), pages 307-339, September.
    5. de la Croix, David & Gobbi, Paula E., 2017. "Population density, fertility, and demographic convergence in developing countries," Journal of Development Economics, Elsevier, vol. 127(C), pages 13-24.
    6. de la Croix, David & Gobbi, Paula E., 2022. "Population homeostasis in sub-Saharan Africa," Economics & Human Biology, Elsevier, vol. 45(C).

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    More about this item

    Keywords

    Heterogeneity; Regional Development; Out-of-Africa Hypothesis; Comparative Development; Genetic Diversity; Nighttime Light Intensity;
    All these keywords.

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