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Dueling experts and imperfect verification

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  • Yee, Kenton K.

Abstract

In the Dueling Experts Game, adversarial experts strategically produce "good" or "bad" evidence to support their partisan testimony. Good evidence is probative while bad evidence has no evidentiary value. The new feature of this Game is that Judge sometimes erroneously identifies good evidence as bad evidence and vice versa. Along the Game's equilibrium path, each partisan expert produces only good evidence if it supports his side. When favorable good evidence is unavailable, an expert produces bad evidence to support his testimony. Hence, dueling experts always contradict one another. Despite their conflicting testimony, one of the experts invariably produces the available good evidence for Judge. Therefore, Judge always receives the available good evidence. A central result is that the quality of experts, including their ability to persuade judges using available good evidence, and the quality of judges - their ability to distinguish good from bad evidence - determine the accuracy of verdicts. Remarkably, the likelihood that experts are endowed with good evidence does not matter provided that this likelihood is not identically zero or one.

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Bibliographic Info

Article provided by Elsevier in its journal International Review of Law and Economics.

Volume (Year): 28 (2008)
Issue (Month): 4 (December)
Pages: 246-255

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Handle: RePEc:eee:irlaec:v:28:y:2008:i:4:p:246-255

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Web page: http://www.elsevier.com/locate/irle

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Keywords: Litigation Evidence production Verifiability Judicial error;

References

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  1. Katz, Avery, 1988. "Judicial decisionmaking and litigation expenditure," International Review of Law and Economics, Elsevier, vol. 8(2), pages 127-143, December.
  2. William M. Landes, 1974. "An Economic Analysis of the Courts," NBER Chapters, in: Essays in the Economics of Crime and Punishment, pages 164-214 National Bureau of Economic Research, Inc.
  3. Paul R. Milgrom & John Roberts, 1985. "Relying on the Information of Interested Parties," Cowles Foundation Discussion Papers 749, Cowles Foundation for Research in Economics, Yale University.
  4. Richard A. Posner, 1999. "The Law and Economics of the Economic Expert Witness," Journal of Economic Perspectives, American Economic Association, vol. 13(2), pages 91-99, Spring.
  5. Hyun Song Shin, 1998. "Adversarial and Inquisitorial Procedures in Arbitration," RAND Journal of Economics, The RAND Corporation, vol. 29(2), pages 378-405, Summer.
  6. Lipman Barton L. & Seppi Duane J., 1995. "Robust Inference in Communication Games with Partial Provability," Journal of Economic Theory, Elsevier, vol. 66(2), pages 370-405, August.
  7. Hylton, Keith N, 1993. "Asymmetric Information and the Selection of Disputes for Litigation," The Journal of Legal Studies, University of Chicago Press, vol. 22(1), pages 187-210, January.
  8. George L. Priest & Benjamin Klein, 1984. "The Selection of Disputes for Litigation," The Journal of Legal Studies, University of Chicago Press, vol. 13(1), pages 1-56, January.
  9. Froeb, Luke M. & Kobayashi, Bruce H., 2001. "Evidence production in adversarial vs. inquisitorial regimes," Economics Letters, Elsevier, vol. 70(2), pages 267-272, February.
  10. H.S. Shin, 1994. "News Management and the Value of Firms," RAND Journal of Economics, The RAND Corporation, vol. 25(1), pages 58-71, Spring.
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