A Dynamic Game under Ambiguity: Repeated Bargaining with Interactive Learning

Besanko, David, Tong, Jian and Wu, Jianjun (2012) A Dynamic Game under Ambiguity: Repeated Bargaining with Interactive Learning. Southampton, GB, University of Southampton, 60pp.


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Conventional Bayesian games of incomplete information are limited in their ability to represent complete ignorance of an uninformed player about an opponent's private information. Using an illustrative example of repeated bargaining with interactive learning, we analyze a dynamic game of incomplete information that incorporates a multiple-prior belief system. We consider a game in which a principal sequentially compensates an agent for his effort on a novel experiment --- a Poisson process with unknown hazard rate. The agent has knowledge to form a single prior over the hazard rate, but the principal has complete ignorance, represented by the set of all plausible prior distributions over the hazard rate. We propose a new equilibrium concept --- Perfect Objectivist Equilibrium --- in which the principal infers the agent's prior from the observed history of the game via maximum likelihood updating. The new equilibrium concept embodies a novel model of learning under ambiguity in the context of a dynamic game. The unique (Markov) equilibrium outcome determines a unique bargaining solution. The underlying Markov Perfect Objectivist Equilibria are all belief-free, in sharp contrast to Markov Perfect Bayesian Equilibria, which hinge on subjective pretense of knowledge and predict a continuum of equilibrium outcomes.

Item Type: Monograph (Working Paper)
Subjects: H Social Sciences > HA Statistics
Divisions : Faculty of Social and Human Sciences > Social Sciences > Economics
ePrint ID: 207857
Accepted Date and Publication Date:
10 January 2012Made publicly available
Date Deposited: 18 Jan 2012 15:19
Last Modified: 31 Mar 2016 13:48
URI: http://eprints.soton.ac.uk/id/eprint/207857

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