Endogenous ambiguity in cheap talk

Kellner, Christian and Le Quement, Mark T. (2018) Endogenous ambiguity in cheap talk. Journal of Economic Theory, 173. pp. 1-17. ISSN 0022-0531

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    This paper proposes a model of ambiguous language. We consider a simple cheap talk game in which a sender who faces an ambiguity averse receiver is able to perform ambiguous randomization, i.e. to randomize according to unknown probabilities. We show that for any standard influential communication equilibrium there exists an equilibrium featuring an ambiguous communication strategy which Pareto-dominates it in terms of consistent planning ex ante utilities. Ambiguity, by triggering worst-case decision-making by the receiver, shifts the latter's response to information towards the sender's ideal action, thus encouraging more information transmission.

    Item Type: Article
    Uncontrolled Keywords: cheap talk,ambiguity
    Faculty \ School: Faculty of Social Sciences > School of Economics
    Depositing User: Pure Connector
    Date Deposited: 29 Sep 2017 06:06
    Last Modified: 09 Apr 2019 12:38
    URI: https://ueaeprints.uea.ac.uk/id/eprint/65002
    DOI: 10.1016/j.jet.2017.10.007

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