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The Law and Economics of the Economic Expert Witness

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  • Richard A. Posner

Abstract

I will consider the law and economics of the use of economic expert witnesses. After introducing the law governing the use of expert witnesses (including economists), I analyze and respond to several concerns regarding the use of expert witnesses. The first is that expert witnesses paid by the respective parties are bound to be partisans ("hired guns") rather than being disinterested, and hence presumptively truthful, or at least honest, witnesses. A second concern is about intelligibility once the expert's evidence has been admitted. A third concern about expert testimony is that opposing experts often cancel each other out. Supposing that the use of economists' testifying as expert witnesses is here to stay, we should consider how the system might be improved. My major proposal is the greater use of court-appointed experts selected on the arbitration model, but I have two additional proposals.

Suggested Citation

  • 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.
    • Handle: RePEc:aea:jecper:v:13:y:1999:i:2:p:91-99
    Note: DOI: 10.1257/jep.13.2.91
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    File URL: http://www.aeaweb.org/articles.php?doi=10.1257/jep.13.2.91
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    References listed on IDEAS

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    1. Salop, Steven C, 1987. "Evaluating Uncertain Evidence with Sir Thomas Bayes: A Note for Teachers," Journal of Economic Perspectives, American Economic Association, vol. 1(1), pages 155-159, Summer.
    2. James J. Heckman, 1998. "Detecting Discrimination," Journal of Economic Perspectives, American Economic Association, vol. 12(2), pages 101-116, Spring.
    3. Follett, Robert S & Ward, Michael P & Welch, Finis, 1993. "Problems in Assessing Employment Discrimination," American Economic Review, American Economic Association, vol. 83(2), pages 73-78, May.
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    Cited by:

    1. Yves Oytana & Nathalie Chappe, 2018. "Expert opinion in a tort litigation game," European Journal of Law and Economics, Springer, vol. 46(1), pages 67-107, August.
    2. Oliver Budzinski, 2009. "Modern Industrial Economics and Competition Policy: Open Problems and Possible Limits," Working Papers 93/09, University of Southern Denmark, Department of Sociology, Environmental and Business Economics.
    3. Winand Emons, 2005. "Perjury versus Truth Revelation: Quantity or Quality of Testimony," Journal of Institutional and Theoretical Economics (JITE), Mohr Siebeck, Tübingen, vol. 161(3), pages 392-410, September.
    4. Roland Hodler & Simon Loertscher & Dominic Rohner, 2010. "Biased Experts, Costly Lies, and Binary Decisions," Working Papers 10.01, Swiss National Bank, Study Center Gerzensee.
    5. Oliver Budzinski & Isabel Ruhmer, 2010. "Merger Simulation In Competition Policy: A Survey," Journal of Competition Law and Economics, Oxford University Press, vol. 6(2), pages 277-319.
    6. Oliver Budzinski, 2010. "An Institutional Analysis of the Enforcement Problems in Merger Control," Working Papers 101/10, University of Southern Denmark, Department of Sociology, Environmental and Business Economics.
    7. Robert Cooter & Winand Emons, 2004. "Truth-Bonding and Other Truth-Revealing Mechanisms for Courts," European Journal of Law and Economics, Springer, vol. 17(3), pages 307-327, May.
    8. Jef De Mot & Murat C. Mungan, 2024. "Whistle‐blowing and the incentive to hire," Economic Inquiry, Western Economic Association International, vol. 62(3), pages 1292-1308, July.
    9. Maarten Pieter Schinkel, 2008. "Forensic Economics In Competition Law Enforcement," Journal of Competition Law and Economics, Oxford University Press, vol. 4(1), pages 1-30.
    10. Yehonatan Givati, 2016. "A Theory of Whistleblower Rewards," The Journal of Legal Studies, University of Chicago Press, vol. 45(1), pages 43-72.
    11. R. Forrest McCluer & Martha A. Starr, 2013. "Using Difference in Differences to Estimate Damages in Healthcare Antitrust: A Case Study of Marshfield Clinic," International Journal of the Economics of Business, Taylor & Francis Journals, vol. 20(3), pages 447-469, November.
    12. Bruno Frey, 2006. "How Influential is Economics?," De Economist, Springer, vol. 154(2), pages 295-311, June.
    13. Bruno S. Frey, 2000. "Was Bewirkt die Volkswirtschaftslehre?," Perspektiven der Wirtschaftspolitik, Verein für Socialpolitik, vol. 1(1), pages 5-33, February.
    14. Robert Cooter & Winand Emons, 2003. "Truth-Revealing Mechanisms for Courts," Journal of Institutional and Theoretical Economics (JITE), Mohr Siebeck, Tübingen, vol. 159(2), pages 259-279, June.
    15. Michael R. Baye & Joshua D. Wright, 2011. "Is Antitrust Too Complicated for Generalist Judges? The Impact of Economic Complexity and Judicial Training on Appeals," Journal of Law and Economics, University of Chicago Press, vol. 54(1), pages 1-24.
    16. Valentiny, Pál, 2019. "Közgazdaságtan a jogalkalmazásban [Forensic economics]," Közgazdasági Szemle (Economic Review - monthly of the Hungarian Academy of Sciences), Közgazdasági Szemle Alapítvány (Economic Review Foundation), vol. 0(2), pages 134-162.
    17. Alain Marciano, 2018. "Posner, Richard," Post-Print hal-02306799, HAL.
    18. Cooter, Robert D. & Emons, Winand, 2001. "Truth-Bonding and Other Truth-Revealing Mechanisms for Courts [technical version]," Berkeley Olin Program in Law & Economics, Working Paper Series qt3587v9sv, Berkeley Olin Program in Law & Economics.
    19. Christiansen, Arndt, 2005. "Der "more economic approach" in der EU-Fusionskontrolle - eine kritische Würdigung," Research Notes 21, Deutsche Bank Research.
    20. Yee, Kenton K., 2008. "Dueling experts and imperfect verification," International Review of Law and Economics, Elsevier, vol. 28(4), pages 246-255, December.
    21. Oliver Budzinski, 2008. "A Note on Competing Merger Simulation Models in Antitrust Cases: Can the Best Be Identified?," MAGKS Papers on Economics 200803, Philipps-Universität Marburg, Faculty of Business Administration and Economics, Department of Economics (Volkswirtschaftliche Abteilung).

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    More about this item

    JEL classification:

    • A11 - General Economics and Teaching - - General Economics - - - Role of Economics; Role of Economists
    • K40 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - General

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