A Notion of Consistent Rationalizability - Between Weak and Pearce's Extensive Form Rationalizability
Abstract
Ben-Porath (1997) characterizes the strategies consistent with common certainty of rationality (CCR) and the origin of a generic game of perfect information. More generally, the notion of "weak extensive form rationalizability" (weak EFR) captures the implications initial CCR in an extensive form game. We go one step further by ascertaining at which additional information sets initial CCR can be maintained "consistently". Our consistency notion has two aspects: we examine whether there is "internal consistency" in assuming CCR at a given collection of information sets by using Battigalli and Siniscalchi's (1999) recent result while we introduce "external consistency" to account for all reachable information sets. For a class of games, including all belief- consistent games [cf. Reny (1993)], we identify a unique collection of information sets and hence a unique set of strategy profiles; moreover, we show that in this case our notion is outcome-equivalent to Pearce's (1984) EFR. But in general out notion is between weak and Pearce's EFR.Download Info
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Paper provided by School of Economics and Management, University of Aarhus in its series Economics Working Papers with number 2000-4.Length: 21
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Handle: RePEc:aah:aarhec:2000-4
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Related research
Keywords: Rationality; beliefs; extensive games; rationalizability;Find related papers by JEL classification:
- C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
This paper has been announced in the following NEP Reports:
- NEP-ALL-2000-10-05 (All new papers)
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Citations
Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.Cited by:
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- Effrosyni Diamantoudi, 2003. "Equilibrium binding agreements under diverse behavioral assumptions," Economic Theory, Springer, vol. 22(2), pages 431-446, 09.
- Effrosyni Diamantoudi, . "Equilibrium Binding Agreements under Diverse Bahavioral Assumptions," Economics Working Papers 2001-9, School of Economics and Management, University of Aarhus.
- Bo Sandemann Rasmussen, . "Government Debt and Capital Accumulation in the Blanchard-Cass-Yaari OLG Model," Economics Working Papers 2000-14, School of Economics and Management, University of Aarhus.
- Nikolaj Malchow-Moeller & Bo Jellesmark Thorsen, . "A Dynamic Agricultural Household Model with Uncertain Income and Irreversible and Indivisible Investments under Credit Constraints," Economics Working Papers 2000-7, School of Economics and Management, University of Aarhus.
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- Boriss Siliverstovs, 2005. "The Bi-parameter Smooth Transition Autoregressive model," Economics Bulletin, AccessEcon, vol. 3(23), pages 1-11.
- Nikolaj Malchow-Moeller & Bo Jellesmark Thorsen, . "Investment under Uncertainty - the Case of Repeated Investment Options," Economics Working Papers 2000-15, School of Economics and Management, University of Aarhus.
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