We 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 hidden by the current cohort by a unanimous `coverup'. We show that in this case only weakly renegotiation proof payoffs are sustainable in equilibrium.
Download Info
To download:
If you experience problems downloading a file, check if you have the
proper application to
view it first. Information about this may be contained
in the File-Format links below. In case of further problems read
the IDEAS help
page. Note that these files are not on the IDEAS
site. Please be patient as the files may be large.
Publisher Info
Paper provided by Georgetown University, Department of Economics in its series Working Papers with number
gueconwpa~01-01-09.
Length: 37pp Date of creation: 01 Nov 2000 Date of revision:
01 Jul 2001 Handle: RePEc:geo:guwopa:gueconwpa~01-01-09
Contact details of provider: Postal: Georgetown University Department of Economics Washington, DC 20057-1036 Phone: 202-687-6074 Fax: 202-687-6102 Email: Web page: http://econ.georgetown.edu/
Order Information: Postal: Marcia Suss Administrative Officer Georgetown University Department of Economics Washington, DC 20057-1036 Email: Web: http://econ.georgetown.edu/
For technical questions regarding this item, or to correct its listing, contact: (Marcia Suss).
Find related papers by JEL classification: 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
Cited by: (explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)
Luca Anderlini (Georgetown University), Dino Gerardi (Yale University), Roger Lagunoff (Georgetown University), .
"The Folk Theorem in Dynastic Repeated Games,"
Working Papers
gueconwpa~04-04-09, Georgetown University, Department of Economics.
[Downloadable!]