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Corruption in Professional Sumo: An Update on Duggan and Levitt's Study

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Author Info

  • Helmut Dietl

    ()
    (Institute for Strategy and Business Economics, University of Zurich)

  • Markus Lang

    ()
    (Institute for Strategy and Business Economics, University of Zurich)

  • Stephan Werner

    ()
    (Institute for Strategy and Business Economics, University of Zurich)

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    Abstract

    In the December 2002 issue of the American Economic Review, Mark Duggan and Steven D. Levitt published an article on corruption in professional sumo. In the present paper, we update Duggan and Levitt's study to take into account changes since January 2000. We find strong statistical evidence that corruption is reduced after January 2000 but reappears in the period from 2003 to 2006. In addition, we can show that the non-linearity in the incentive structure disappears from 2000 to 2003 and reappears after 2003. These results confirm the findings of Duggan and Levitt, who suggest that the structure of promotion in rankings gives incentives to the sumo wrestlers to rig matches.

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    File URL: http://college.holycross.edu/RePEc/spe/DietlLangWerner_Sumo.pdf
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    Bibliographic Info

    Paper provided by International Association of Sports Economists & North American Association of Sports Economists in its series Working Papers with number 0824.

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    Length: 14 pages
    Date of creation: Aug 2008
    Date of revision: Jun 2009
    Handle: RePEc:iso:wpaper:0824

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    Related research

    Keywords: Sumo wrestling; corruption; incentive scheme; social ties; monitoring;

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    1. Mark Duggan & Steven D. Levitt, 2002. "Winning Isn't Everything: Corruption in Sumo Wrestling," American Economic Review, American Economic Association, vol. 92(5), pages 1594-1605, December.
    2. Stefano DellaVigna & Eliana La Ferrara, 2007. "Detecting Illegal Arms Trade," NBER Working Papers 13355, National Bureau of Economic Research, Inc.
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