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A Model of Adversarial Committees |
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Abstract:
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We generalize the Condorcet Jury Theorem to an environment where each voter has private
information about the true state of the world and two groups of voters have opposing statecontingent
preferences. We show that in equilibrium under unanimity rule, the probability of
making a wrong choice for the majority-type voters is bounded below and above. Under any
non-unanimous rule, we show that in a large electorate, if the majority-type voters are attentive
to their private information, and the fraction of the majority-type voters is greater than the
fraction of votes required to pass the alternative, then the probability of choosing the correct
alternative from the majority-type voter’s perspective gets close to one, as in the case of preference
aggregation in complete information. Otherwise, non-unanimous voting rules (except for
simple majority rule) fail to aggregate information. Finally we show that only simple majority
rule is minority-dominance proof. |
Most Common Document Word Stems:
n (255), p (255), 1 (255), 0 (217), vote (163), voter (141), type (135), k (135), s0 (133), altern (128), pr (115), tm (100), joriti (100), ma (100), s1 (97), probabl (97), m (89), -1 (86), state (86), rule (78), equilibrium (77), |
Author's Keywords:
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Adversarial committee, Condorcet Jury Theorem, Information aggregation,
Minority-dominance proofness |
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Association:
Name: American Political Science Association URL: http://www.apsanet.org
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Citation:
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MLA Citation:
| Kim, Jaehoon. "A Model of Adversarial Committees" Paper presented at the annual meeting of the American Political Science Association, Hilton Chicago and the Palmer House Hilton, Chicago, IL, Sep 02, 2004 <Not Available>. 2009-05-26 <http://www.allacademic.com/meta/p59319_index.html> |
APA Citation:
| Kim, J. , 2004-09-02 "A Model of Adversarial Committees" Paper presented at the annual meeting of the American Political Science Association, Hilton Chicago and the Palmer House Hilton, Chicago, IL Online <.PDF>. 2009-05-26 from http://www.allacademic.com/meta/p59319_index.html |
Publication Type: Conference Paper/Unpublished Manuscript Review Method: Peer Reviewed Abstract: We generalize the Condorcet Jury Theorem to an environment where each voter has private
information about the true state of the world and two groups of voters have opposing statecontingent
preferences. We show that in equilibrium under unanimity rule, the probability of
making a wrong choice for the majority-type voters is bounded below and above. Under any
non-unanimous rule, we show that in a large electorate, if the majority-type voters are attentive
to their private information, and the fraction of the majority-type voters is greater than the
fraction of votes required to pass the alternative, then the probability of choosing the correct
alternative from the majority-type voter’s perspective gets close to one, as in the case of preference
aggregation in complete information. Otherwise, non-unanimous voting rules (except for
simple majority rule) fail to aggregate information. Finally we show that only simple majority
rule is minority-dominance proof. |
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| Document Type: |
.pdf |
| Page count: |
30 |
| Word count: |
13303 |
| Text sample: |
| J A Model of Adversarial Committees 1 aehoon Kim Center for Business Government and Society MEDS Department Kel logg School of Management Northwestern University Evanston Il linois 60208 Abstract We generalize the Condorcet Jury Theorem to an environment where each voter has private information about the true state of the world and two groups of voters have opposing state- contingent preferences. We show that in equilibrium under unanimity rule the probability of making a wrong choice for the ma |
| Voting: Condorcet's Jury The- orem with Correlated Votes J. Econ. Behav. Organ. 26 (1995) 353372. A. McLennan Consequences of the Condorcet Jury Theorem for Beneficial Information Aggregation by Rational Agents Amer. Polit. Sci. Rev. 92 (1998) 413418. A. Meirowitz Informative Voting and Condorcet Jury Theorems with a Continuum of Types Soc. Choice Welfare 19 (2002) 219236. R. Myerson Extended Poisson Games and the Condorcet Jury Theorem Games Econ. Behav. 25 (1998) 111131. R. Myerson Large Poisson Games J. Econ. |
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