Cheap talks with uncertainty in expert's preferences


  • Juan Eduardo Calderón Sánchez Universidad Autónoma de San Luis Potosí and Universidad Politécnica de San Luis Potosí



type space, bias, partition, cheap talk


This paper models the strategic information transmission employed by Crawford-Sobel introducing a variant to the lead example of Dimitrakas-Sarafidis. The expert type space has two dimensions; the expert has the private information over two parameters, the state and his bias. The space of actions of the decision maker has only one dimension. We suppose that the state lies in the interval [0,1], but the expert bias lies in the interval [-1,1]. We find that the equilibriums are also in partitions, but there is not equilibrium for all positive integer, the most informative equilibrium exists for a partition of size 3.


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Battaglini, M. (2002). Multiple referrals and multidimensional cheap talk, Econometrica, 70(4), 1379-1401.

Chakraborty, A. y R. Harbaugh (2003). Ordinal cheap talk, Claremont Colleges Working Papers, núm. 2003-05.

Crawford, V. y J. Sobel (1982). Strategic information transmission, Econometrica, 50(6), 1431-1452.

Dimitrakas, V. y Y. Sarafidis (2006). Advice from an expert with unknown motives, INSEAD, mimeo.

Levy, G. y R. Razin (2007). On the limits of communication in multidimensional cheap talk: a comment, Econometrica, 75(3), 885-893.

Li, M. (2004). To disclose or not to disclose: cheap talk with uncertain biases, Concordia University, mimeo.

Li, M. y K. Madarázs (2006). Does disclosure help? Cheap talk and conflicts of interest, Concordia University, mimeo.

Mas Colell, A., M. D. Winston y J. Green (1995). Microeconomic theory, Oxford, Oxford University Press.

Morgan, J. y P. Stocken (2003). An analysis of stock recommendations, Rand Journal of Economics, 34(1), 183-203.



How to Cite

Calderón Sánchez, J. E. (2009). Cheap talks with uncertainty in expert’s preferences. Estudios Económicos De El Colegio De México, 24(2), 285–301.