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Credulity, lies, and costly talk. (English) Zbl 1156.91322
Summary: This paper studies a model of strategic communication by an informed and upwardly biased sender to one or more receivers. Applications include situations in which (i) it is costly for the sender to misrepresent information, due to legal, technological, or moral constraints, or (ii) receivers may be credulous and blindly believe the sender’s recommendation. In contrast to the predictions obtained in the benchmark cheap talk model, our model admits a fully separating equilibrium, provided that the state space is unbounded above. The language used in equilibrium is inflated and naive receivers are deceived.

91A28 Signaling and communication in game theory
91A10 Noncooperative games
Full Text: DOI
[1] Benabou, R.; Laroque, G., Using privileged information to manipulate markets: insiders, gurus, and credibility, Quart. J. econ., 107, 921-958, (1992) · Zbl 0825.90256
[2] Bernheim, B.D.; Severinov, S., Bequests as signals: an explanation for the equal division puzzle, J. polit. econ., 111, 733-764, (2003)
[3] Birkhoff, G.; Rota, G., Ordinary differential equations, (1989), Wiley New York, NY · Zbl 0183.35601
[4] Blanes, J., Credibility and cheap talk of securities analysts: theory and evidence, (2003), Mimeo, London School of Economics
[5] H.B. Cai, J.T. Wang, Overcommunication in strategic information transmission games, Games Econ. Behav., forthcoming. · Zbl 1150.91008
[6] Chen, Y., Perturbed communication games with honest senders and naive receivers, (2005), Mimeo, Arizona State University · Zbl 1282.91059
[7] Coddington, E.; Levinson, N., Theory of ordinary differential equations, (1955), McGraw-Hill New York, NY · Zbl 0064.33002
[8] Crawford, V., Lying for strategic advantage: rational and boundedly rational misrepresentation of intentions, Amer. econ. rev., 93, 133-149, (2003)
[9] Crawford, V.; Sobel, J., Strategic information transmission, Econometrica, 50, 1431-1452, (1982) · Zbl 0494.94007
[10] Dickhaut, J.W.; McCabe, K.A.; Mukherjee, A., An experimental study of strategic information transmission, Econ. theory, 6, 389-403, (1995) · Zbl 0840.90042
[11] Ettinger, D.; Jehiel, P., Towards a theory of deception, (2005), Mimeo, University College London
[12] Farrell, J., Meaning and credibility in cheap-talk games, Games econ. behav., 5, 514-531, (1993) · Zbl 0790.90091
[13] Fudenberg, D.; Tirole, J., Perfect Bayesian equilibrium and sequential equilibrium, J. econ. theory, 53, 236-260, (1991) · Zbl 0717.90108
[14] Jackson, A., Trade generation, reputation, and Sell-side analysts, J. finance, 60, 673-717, (2005)
[15] Kartik, N., Information transmission with almost-cheap talk, (2005), Mimeo, University of California at San Diego
[16] Lim, T., Rationality and analysts’ forecast bias, J. finance, 54, 369-385, (2001)
[17] Mailath, G., Incentive compatibility in signaling games with a continuum of types, Econometrica, 55, 1349-1365, (1987) · Zbl 0641.90096
[18] Malmendier, U.; Shanthikumar, D., Are investors naive about incentives?, (2003), Mimeo, Stanford GSB
[19] Manelli, A., Cheap talk and sequential equilibria in signaling games, Econometrica, 69, 917-942, (1996) · Zbl 0856.90137
[20] Michaely, R.; Womack, K.L., Conflict of interest and credibility of underwriter analyst recommendations, Rev. finan. stud., 12, 654-686, (1999)
[21] Morgan, J.; Stocken, P., An analysis of stock recommendations, RAND J. econ., 34, 183-203, (2003)
[22] Olszewski, W., Informal communication, J. econ. theory, 117, 180-200, (2004) · Zbl 1181.91042
[23] Ottaviani, M.; Squintani, F., Naive audience and communication bias, (2006), Mimeo, London Business School · Zbl 1118.91027
[24] H. Rosovsky, M. Hartley, Evaluation and the Academy: Are We Doing the Right Thing? Grade Inflation and Letters of Recommendations, American Academy of Arts and Science, Cambridge, MA, 2002.
[25] Sobel, J., A theory of credibility, Rev. econ. stud., 52, 557-573, (1985) · Zbl 0568.90004
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