Comparative Cheap Talk
When are comparative statements credible? For instance, when can a professor rank different students for an employer, or a stock analyst rank different stocks for a client? We show that simple complementarity conditions ensure that an expert with private information about multiple issues can credibly rank the issues for a decision maker. By restricting the expert’s ability to exaggerate, multidimensional cheap talk of this form permits communication when it would not be credible in a single dimension. The communication gains can be substantial with even a couple of issues, and the complete ranking is asymptotically equivalent to full revelation as the number of issues becomes large. Nevertheless, partial rankings are sometimes more credible and/or more profitable for the expert than the complete ranking. We confirm the robustness of comparative cheap talk to asymmetries that are not too large. Moreover, we show that for a sufficiently large number of independent issues there are always some issues sufficiently symmetric to permit influential cheap talk.
|Date of creation:||2004|
|Date of revision:|
|Publication status:||Published in Journal of Economic Theory, 2007|
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Web page: http://kelley.iu.edu/bepp/
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- Joseph Farrell, 1987. "Cheap Talk, Coordination, and Entry," RAND Journal of Economics, The RAND Corporation, vol. 18(1), pages 34-39, Spring.
- David Spector, 1999.
"Rational debate and one-dimensional conflict,"
99-09, Massachusetts Institute of Technology (MIT), Department of Economics.
- Wouter Dessein, 2002.
"Authority and Communication in Organizations,"
Review of Economic Studies,
Oxford University Press, vol. 69(4), pages 811-838.
- Wouter Dessein, 2000. "Authority and Communication in Organizations," Econometric Society World Congress 2000 Contributed Papers 1747, Econometric Society.
- Phillip C. Stocken, 2000. "Credibility of Voluntary Disclosure," RAND Journal of Economics, The RAND Corporation, vol. 31(2), pages 359-374, Summer.
- Michael Ostrovsky & Michael Schwarz, 2003. "Equilibrium Information Disclosure: Grade Inflation and Unraveling," Harvard Institute of Economic Research Working Papers 1996, Harvard - Institute of Economic Research.
- Krishna, Vijay & Morgan, John, 2004. "The art of conversation: eliciting information from experts through multi-stage communication," Journal of Economic Theory, Elsevier, vol. 117(2), pages 147-179, August.
- Archishman Chakraborty & Nandini Gupta & Rick Harbaugh, 2006.
"Best foot forward or best for last in a sequential auction?,"
RAND Journal of Economics,
RAND Corporation, vol. 37(1), pages 176-194, 03.
- Archishman Chakraborty & Nandini Gupta & Rick Harbaugh, 2004. "Best Foot Forward or Best for Last in a Sequential Auction?," Working Papers 2004-07, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
- Archishman Chakraborty & Nandini Gupta & Rick Harbaugh, 2000. "Best Foot Forward or Best for Last in a Sequential Auction?," Claremont Colleges Working Papers 2000-43, Claremont Colleges.
- Athey, Susan, 2002. "Monotone Comparative Statics Under Uncertainty," Scholarly Articles 3372263, Harvard University Department of Economics.
- Marco Battaglini, 2002.
"Multiple Referrals and Multidimensional Cheap Talk,"
Econometric Society, vol. 70(4), pages 1379-1401, July.
- Marco Battaglini, 2000. "Multiple Referrals and Multidimensional Cheap Talk," Econometric Society World Congress 2000 Contributed Papers 1557, Econometric Society.
- Marco Battaglini, 1999. "Multiple Referrals and Multidimensional Cheap Talk," Discussion Papers 1295, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Ronny Razin & Gilat Levy, 2004.
"Multidimentional Cheap Talk,"
2004 Meeting Papers
184, Society for Economic Dynamics.
- Crawford, Vincent P & Sobel, Joel, 1982.
"Strategic Information Transmission,"
Econometric Society, vol. 50(6), pages 1431-51, November.
- Morgan, John & Stocken, Phillip C, 2003.
" An Analysis of Stock Recommendations,"
RAND Journal of Economics,
The RAND Corporation, vol. 34(1), pages 183-203, Spring.
- Stephen Morris, 1999.
Cowles Foundation Discussion Papers
1242, Cowles Foundation for Research in Economics, Yale University.
- Robert J. Aumann & Sergiu Hart, 2002.
"Long Cheap Talk,"
Discussion Paper Series
dp284, The Federmann Center for the Study of Rationality, the Hebrew University, Jerusalem, revised Nov 2002.
- Joseph Farrell & Matthew Rabin, 1996. "Cheap Talk," Journal of Economic Perspectives, American Economic Association, vol. 10(3), pages 103-118, Summer.
- Chakraborty, Archishman & Harbaugh, Rick, 2003. "Cheap talk comparisons in multi-issue bargaining," Economics Letters, Elsevier, vol. 78(3), pages 357-363, March.
- Matthew O Jackson & Hugo F Sonnenschein, 2007. "Overcoming Incentive Constraints by Linking Decisions -super-1," Econometrica, Econometric Society, vol. 75(1), pages 241-257, 01.
- Susan Athey, 2002. "Monotone Comparative Statics Under Uncertainty," The Quarterly Journal of Economics, MIT Press, vol. 117(1), pages 187-223, February.
- Baliga, Sandeep & Morris, Stephen, 2002.
"Co-ordination, Spillovers, and Cheap Talk,"
Journal of Economic Theory,
Elsevier, vol. 105(2), pages 450-468, August.
- Marco Ottaviani & Francesco Squintani, 2002. "Non-Fully Strategic Information Transmission," Wallis Working Papers WP29, University of Rochester - Wallis Institute of Political Economy.
- Archishman Chakraborty & Nandini Gupta & Rick Harbaugh, 2002. "Seller Cheap Talk in Common Value Auctions," Claremont Colleges Working Papers 2002-30, Claremont Colleges.
- Sobel, Joel, 1985. "A Theory of Credibility," Review of Economic Studies, Wiley Blackwell, vol. 52(4), pages 557-73, October.
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