Corruption in Professional Sumo: An Update on the Study of Duggan and Levitt
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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- Brian A. Jacob & Steven D. Levitt, 2003. "Rotten Apples: An Investigation of the Prevalence and Predictors of Teacher Cheating," The Quarterly Journal of Economics, Oxford University Press, vol. 118(3), pages 843-877.
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"Winning Isn't Everything: Corruption in Sumo Wrestling,"
NBER Working Papers
7798, National Bureau of Economic Research, Inc.
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- Stefano DellaVigna & Eliana La Ferrara, 2010.
"Detecting Illegal Arms Trade,"
American Economic Journal: Economic Policy,
American Economic Association, vol. 2(4), pages 26-57, November.
- West, Mark D, 1997. "Legal Rules and Social Norms in Japan's Secret World of Sumo," The Journal of Legal Studies, University of Chicago Press, vol. 26(1), pages 165-201, January.
- Brian A. Jacob & Steven D. Levitt, 2003. "Rotten Apples: An Investigation of the Prevalence and Predictors of Teacher Cheating," NBER Working Papers 9413, National Bureau of Economic Research, Inc.
- Beck A. Taylor & Justin G. Trogdon, 2002. "Losing to Win: Tournament Incentives in the National Basketball Association," Journal of Labor Economics, University of Chicago Press, vol. 20(1), pages 23-41, January.
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