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Heterogeneity and Productivity

Listed author(s):
  • Quamrul Ashraf
  • Oded Galor
  • Marc Klemp

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.

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File URL: http://www.brown.edu/academics/economics/sites/brown.edu.academics.economics/files/uploads/2015-4_paper_2.pdf
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Paper provided by Brown University, Department of Economics in its series Working Papers with number 2015-4.

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Date of creation: 2015
Handle: RePEc:bro:econwp:2015-4
Contact details of provider: Postal:
Department of Economics, Brown University, Providence, RI 02912

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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 & 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.
  4. Stelios Michalopoulos, 2012. "The Origins of Ethnolinguistic Diversity," American Economic Review, American Economic Association, vol. 102(4), pages 1508-1539, June.
  5. J. Vernon Henderson & Adam Storeygard & David N. Weil, 2012. "Measuring Economic Growth from Outer Space," American Economic Review, American Economic Association, vol. 102(2), pages 994-1028, April.
  6. Nathan Nunn & Leonard Wantchekon, 2011. "The Slave Trade and the Origins of Mistrust in Africa," American Economic Review, American Economic Association, vol. 101(7), pages 3221-3252, December.
  7. Jeffrey M Wooldridge, 2010. "Econometric Analysis of Cross Section and Panel Data," MIT Press Books, The MIT Press, edition 2, volume 1, number 0262232588, December.
  8. Jo Thori Lind & Halvor Mehlum, 2010. "With or Without U? The Appropriate Test for a U-Shaped Relationship," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 72(1), pages 109-118, 02.
  9. 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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