Bourjade, Sylvain and Jullien, Bruno (2004): Expertise and Bias in Decision Making.
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In this paper, we develop a model of a decision maker using an expert to obtain information. The expert is biased toward some favoured decision but cares also about its reputation on the market for experts. We then analyse the corresponding decision game depending on the nature of the informational linkage with the market. In the case where the expert is biased in favour of the status quo, the final decision is always biased in the same direction. Moreover, it is better to rely on experts biased against the status quo. We also show that it is optimal to publically disclose the expert report. Finally, we prove that the intuitive results that hiring an honest inside expert raises the outside expert's incentives to report truthfully holds when reports are public but not when they are secret.
|Item Type:||MPRA Paper|
|Original Title:||Expertise and Bias in Decision Making|
|Keywords:||Experts, Bias, Reputation, Merger Control|
|Subjects:||D - Microeconomics > D8 - Information, Knowledge, and Uncertainty > D82 - Asymmetric and Private Information; Mechanism Design
L - Industrial Organization > L4 - Antitrust Issues and Policies > L40 - General
|Depositing User:||Sylvain Bourjade|
|Date Deposited:||19. Feb 2008 00:41|
|Last Modified:||17. Feb 2013 20:37|
Beniers, K.J. and O.H. Swank, 2004, "On the Composition of Committees," Journal of Law, Economics, and Organization, 20, 353-378. Biais, B. and E. Perotti, 2005, "Entrepreneurs and new ideas," Working Paper, IDEI. Bruce, B., 2002, "Stock Analysts: Experts on Whose Behalf," The Journal of Psychology and Financial Markets, 3, 198-201. Crawford, V. and J. Sobel, 1982, "Strategic Information Transmission," Econometrica, 50(6), 1431-1452. Dewatripont, M. and J. Tirole, 1999, "Advocates," Journal of Political Economy, 107, 1-39. Farrell, J., 1993, "Meaning and credibility in cheap-talk games," Games and Economic Behavior, 5, 514-531. Frisell, L., 2004, "Taking advice from imperfectly informed advisors: Yardstick competition re-examined," mimeo, Sveriges Riksbank. Gonzalez, A., 2004, "Antitrust Enforcement and the Design of Disclosure Rules. An Application to Merger Control," Working Paper, University of Toulouse 1. Kuhn, K-U., 2002, "Reforming European Merger Review: Targeting Problem Areas in Policy Outcomes," Journal of Industry, Competition and Trade, 2, 311-364. Laffont, J.-J. and J. Tirole, 1991, "The Politics of Government Decision-Making: a Theory of Regulatory Capture," Quarterly Journal of Economics, 106, 1089-1127. Li, M., 2003, "Combining Expert Opinions," Working Paper, University of Wisconsin. Marcoul, P., 2003, "A Theory of Advice Based on Information Search Incentives," Working Paper, Iowa State University. Morgan, J. and P. Stocken, 2003, "An Analysis of Stock Recommendations," Rand Journal of Economics, 34(1), 183-203. Morris, S., 2001, "Political Correctness," Journal of Political Economy, 109, 231-265. Ottaviani, M. and P. N. Sorensen, 2001, "Professional Advice: The Theory of Reputational Cheap Talk," Working Paper, University College London. Rey, P., 2001, "Towards a Theory of Competition Policy," Working Paper, IDEI. Roller, L.-H., Stennek, J. and F. Verboven, 2000, "Efficiency Gains from Mergers," Working Paper, IUI. Shin, H.S., 1998, "Adversarial and Inquisitorial Procedures in Arbitration," RAND Journal of Economics, 29(2), 378-405.