Communication in Dynastic Repeated Games: `Whitewashes' and `Coverups'
AbstractWe ask whether communication can directly substitute for memory in dynastic repeated games in which short lived individuals care about the utility of their offspring who replace them in an infinitely repeated game. Each individual is unable to observe what happens before his entry in the game. Past information is therefore conveyed from one cohort to the next by means of communication. When communication is costless and messages are sent simultaneously, communication mechanisms or protocols exist that sustain the same set of equilibrium payoffs as in the standard repeated game. When communication is costless but sequential, the incentives to `whitewash' the unobservable past history of play become pervasive. These incentives to whitewash can only be countered if some player serves as a `neutral historian' who verifies the truthfulness of others' reports while remaining indifferent in the process. By contrast, when communication is sequential and (lexicographically) costly, all protocols admit only equilibria that sustain stage Nash equilibrium payoffs. We also analyze a centralized communication protocol in which history leaves a `footprint' that can only be hidden by the current cohort in a unanimous `coverup'. We show that in this case only weakly renegotiation proof payoffs are sustainable in equilibrium.
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Bibliographic InfoPaper provided by EconWPA in its series Game Theory and Information with number 0107001.
Length: 37 pages
Date of creation: 23 Jul 2001
Date of revision:
Note: Type of Document - LaTex; prepared on Dell PC; to print on PostScript; pages: 37 ; figures: included
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Web page: http://220.127.116.11
Dynastic Repeated Games; Communication; Whitewashing; Coverups;
Other versions of this item:
- Luca Anderlini & Roger Lagunoff, 2005. "Communication in dynastic repeated games: ‘Whitewashes’ and ‘coverups’," Economic Theory, Springer, vol. 26(2), pages 265-299, 08.
- Luca Anderlini & Roger Lagunoff, 2000. "Communication in Dynastic Repeated Games: `Whitewashes' and `Coverups," Working Papers gueconwpa~01-01-03, Georgetown University, Department of Economics, revised 01 Jul 2001.
- C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
- C73 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Stochastic and Dynamic Games; Evolutionary Games
- D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
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