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Coalitional Rationalizability

  • Ambrus, Attila
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    This paper investigates how groups or coalitions of players can act in their collective interest in noncooperative normal form games even if equilibrium play is not assumed. The main idea is that each member of a coalition will confine play to a subset of their strategies if it is in their mutual interest to do so. An iterative procedure of restrictions is used to define a noncooperative solution concept, the set of coalitionally rationalizable strategies. The procedure is analogous to iterative deletion of never best response strategies, but operates on implicit agreements by different coalitions. The solution set is a nonempty subset of the rationalizable strategies.

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    File URL: http://dash.harvard.edu/bitstream/handle/1/3200266/ambrus_coalitional.pdf
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    Paper provided by Harvard University Department of Economics in its series Scholarly Articles with number 3200266.

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    Date of creation: 2006
    Date of revision:
    Publication status: Published in Quarterly Journal of Economics
    Handle: RePEc:hrv:faseco:3200266
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    Web page: http://www.economics.harvard.edu/

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    1. Nir Dagan & Roberto Serrano & Oscar Volij, 1997. "A Noncooperative View of Consistent Bankruptcy Rules," Economic theory and game theory 005, Nir Dagan.
    2. Licun Xue, 1998. "Coalitional stability under perfect foresight," Economic Theory, Springer, vol. 11(3), pages 603-627.
    3. Srabana Gupta & Richard E. Romano, 1998. "Monitoring the Principal with Multiple Agents," RAND Journal of Economics, The RAND Corporation, vol. 29(2), pages 427-442, Summer.
    4. Delgado, Juan & Moreno, Diego, 2004. "Coalition-proof supply function equilibria in oligopoly," Journal of Economic Theory, Elsevier, vol. 114(2), pages 231-254, February.
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