Biased experts, costly lies, and binary decisions
Decision makers lacking crucial specialist know-how often consult with better informed but biased experts. In our model the decision maker’s choice problem is binary and her preferred option depends on the state of the world unknown to her. The expert observes the state and sends a report to the decision maker. His bias is such that he prefers the same decision for all states. Lying about the state leads to a cost that increases in the size of the lie. As a function of the size of the expert’s bias and the decision maker’s prior about the underlying state, three kinds of equilibrium behavior occur. In each case equilibrium consists of separating and pooling segments, and the decision maker takes the expert’s preferred decision for some states for which she would not take this decision had she observed the state herself. The model has a variety of applications and extends to situations in which the decision maker may be naive and take the report by its face value, and to situations with multiple experts and uncertainty about the size of the expert’s bias.
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- Johannes Hörner & Nicolas Sahuguet, 2007. "Costly Signalling in Auctions -super-1," Review of Economic Studies, Oxford University Press, vol. 74(1), pages 173-206.
- Kenneth Rogoff & Anne Sibert, 1988.
"Elections and Macroeconomic Policy Cycles,"
Review of Economic Studies,
Oxford University Press, vol. 55(1), pages 1-16.
- Michaely, Roni & Womack, Kent L, 1999. "Conflict of Interest and the Credibility of Underwriter Analyst Recommendations," Review of Financial Studies, Society for Financial Studies, vol. 12(4), pages 653-86.
- Krishna, V. & Morgan, J., 1999.
"A Model of Expertise,"
206, Princeton, Woodrow Wilson School - Public and International Affairs.
- Jason G. Cummins & Ingmar Nyman, 2002.
"The dark side of competitive pressure,"
Finance and Economics Discussion Series
2002-43, Board of Governors of the Federal Reserve System (U.S.).
- Callander, Steven & Wilkie, Simon, 2007. "Lies, damned lies, and political campaigns," Games and Economic Behavior, Elsevier, vol. 60(2), pages 262-286, August.
- Robert Cooter & Winand Emons, 2000.
"Truth-Revealing Mechanisms for Courts,"
Econometric Society World Congress 2000 Contributed Papers
0211, Econometric Society.
- 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-, June.
- Claude Fluet, 2009.
"Accuracy Versus Falsification Costs: The Optimal Amount of Evidence under Different Procedures,"
Journal of Law, Economics and Organization,
Oxford University Press, vol. 25(1), pages 134-156, May.
- Winand Emons & Claude Fluet, 2007. "Accuracy versus Falsification Costs: The optimal Amount of Evidence under different Procedures," Diskussionsschriften dp0702, Universitaet Bern, Departement Volkswirtschaft.
- Winand Emons & Claude Fluet, 2007. "Accuracy versus Falsification Costs: the Optimal Amount of Evidence under Different Procedures," Cahiers de recherche 0703, CIRPEE.
- Emons, Winand & Fluet, Claude, 2007. "Accuracy versus Falsification Costs: The Optimal Amount of Evidence under Different Procedures," CEPR Discussion Papers 6150, C.E.P.R. Discussion Papers.
- Lacker, J.M., 1989.
"Optimal Contracts Under Costly State Falsification,"
Purdue University Economics Working Papers
956, Purdue University, Department of Economics.
- Lacker, Jeffrey M & Weinberg, John A, 1989. "Optimal Contracts under Costly State Falsification," Journal of Political Economy, University of Chicago Press, vol. 97(6), pages 1345-63, December.
- Chris Edmond, 2011.
"Information Manipulation, Coordination, and Regime Change,"
Department of Economics - Working Papers Series
1125, The University of Melbourne.
- Chris Edmond, 2013. "Information Manipulation, Coordination, and Regime Change," Review of Economic Studies, Oxford University Press, vol. 80(4), pages 1422-1458.
- Chris Edmond, 2011. "Information Manipulation, Coordination, and Regime Change," NBER Working Papers 17395, National Bureau of Economic Research, Inc.
- Wrasai, Phongthorn & Swank, Otto H., 2007.
"Policy makers, advisers, and reputation,"
Journal of Economic Behavior & Organization,
Elsevier, vol. 62(4), pages 579-590, April.
- Roland Hodler & Simon Loertscher & Dominic Rohner, 2007.
"Inefficient Policies and Incumbency Advantage,"
Department of Economics - Working Papers Series
996, The University of Melbourne.
- Swank, Otto H & Letterie, Wilko & van Dalen, Hendrik P, 1999. "A Theory of Policy Advice," Journal of Law, Economics and Organization, Oxford University Press, vol. 15(3), pages 602-14, October.
- Grossman, Sanford J. & Perry, Motty, 1986. "Perfect sequential equilibrium," Journal of Economic Theory, Elsevier, vol. 39(1), pages 97-119, June.
- Banks, Jeffrey S., 1990. "A model of electoral competition with incomplete information," Journal of Economic Theory, Elsevier, vol. 50(2), pages 309-325, April.
- Navin Kartik, 2008.
"Strategic Communication with Lying Costs,"
2008 Meeting Papers
350, Society for Economic Dynamics.
- Renée B. Adams & Daniel Ferreira, 2007. "A Theory of Friendly Boards," Journal of Finance, American Finance Association, vol. 62(1), pages 217-250, 02.
- Kartik, Navin & Ottaviani, Marco & Squintani, Francesco, 2007. "Credulity, lies, and costly talk," Journal of Economic Theory, Elsevier, vol. 134(1), pages 93-116, May.
- Keith J. Crocker & John Morgan, 1998. "Is Honesty the Best Policy? Curtailing Insurance Fraud through Optimal Incentive Contracts," Journal of Political Economy, University of Chicago Press, vol. 106(2), pages 355-375, April.
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