This file is part of IDEAS, which uses RePEc data


[ Papers | Articles | Software | Books | Chapters | Authors | Institutions | JEL Classification | NEP reports | Search | New papers by email | Author registration | Rankings | Volunteers | FAQ | Blog | Help! ]

A Bayesian Model of Voting in Juries

Author info | Abstract | Publisher info | Download info | Related research | Statistics
Author Info
John Duggan (Department of Political Science, Department of Economics, University of Rochester)
Cesar Martinelli () (Centro de Investigacion Economica (CIE), Instituto Tecnologico Autonomo de Mexico (ITAM))

Additional information is available for the following registered author(s):

Abstract

We take a game-theoretic approach to the analysis of juries by modelling voting as a game of incomplete information. Rather than the usual assumption of two possible signals (one indicating guilt, the other innocence), we allow jurors to perceive a full spectrum of signals. Given any voting rule requiring a fixed fraction of votes to convict, we characterize the unique symmetric equilibrium of the game, and we consider the possibility of asymmetric equilibria: we give a condition under which no asymmetric equilibria exist and show that, without under which no asymmetric equilibria exist and show that, without it, asymmetric equilibria may exist. We offer a condition under which unanimity rule exhibits a bias toward convicting the innocent, regardless of the size of the jury, and we exhibit an example showing this bias can be reversed. And we prove a "jury theorem" for our general model: as the size of the jury increases, the probability of a mistaken judgment goes to zero for every voting rule, except unanimity rule; for unanimity rule, we give a condition under which the probability of a mistake is bounded strictly above zero, and we show that, without this condition, the probability of a mistake may go to zero.

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 file. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

File URL: http://ftp.itam.mx/pub/academico/inves/martinelli/9904.pdf
File Format: application/pdf
File Function: First version, 1998-11
Download Restriction: no

Publisher Info
Paper provided by Centro de Investigacion Economica, ITAM in its series Working Papers with number 9904.

Download reference. The following formats are available: HTML, plain text, BibTeX, RIS (EndNote), ReDIF
Length: 38 pages
Date of creation: Jun 1999
Date of revision:
Handle: RePEc:cie:wpaper:9904

Contact details of provider:
Postal: Camino a Sta. Teresa 930, Mexico, D.F. 10700
Phone: +525 628 4197
Fax: +525 628 4058
Email:
Web page: http://cie.itam.mx/
More information through EDIRC

For technical questions regarding this item, or to correct its listing, contact: (Diego Dominguez).

Related research
Keywords:

Other versions of this item:

References listed on IDEAS
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.:
  1. Wit, Jorgen, 1998. "Rational Choice and the Condorcet Jury Theorem," Games and Economic Behavior, Elsevier, vol. 22(2), pages 364-376, February. [Downloadable!] (restricted)
  2. Myerson, Roger B., 1998. "Extended Poisson Games and the Condorcet Jury Theorem," Games and Economic Behavior, Elsevier, vol. 25(1), pages 111-131, October. [Downloadable!] (restricted)
    Other versions:
  3. Timothy Feddersen & Wolfgang Pesendorfer, 1996. "Convicting the Innocent: The Inferiority of Unanimous Jury Verdicts," Discussion Papers 1170, Northwestern University, Center for Mathematical Studies in Economics and Management Science. [Downloadable!]
  4. Feddersen, Timothy J & Pesendorfer, Wolfgang, 1996. "The Swing Voter's Curse," American Economic Review, American Economic Association, vol. 86(3), pages 408-24, June.
    Other versions:
    • Timothy J. Feddersen & Wolfgang Pesendorfer, 1995. "The Swing Voter's Curse," Discussion Papers 1064, Northwestern University, Center for Mathematical Studies in Economics and Management Science. [Downloadable!]
  5. Hao Li & Sherwin Rosen & Wing Suen, 1999. "Conflicts and Common Interests in Committees," NBER Working Papers 7158, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    Other versions:
  6. Timothy Feddersen & Wolfgang Pesendorfer, 1997. "Voting Behavior and Information Aggregation in Elections with Private Information," Econometrica, Econometric Society, vol. 65(5), pages 1029-1058, September.
    Other versions:
  7. John Duggan & Cesar Martinelli, 1998. "A Bayesian Model of Voting in Juries," Wallis Working Papers WP14, University of Rochester - Wallis Institute of Political Economy. [Downloadable!]
    Other versions:
Full references

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.)

  1. Cesar Martinelli, 2002. "Would Rational Voters Acquire Costly Information?," Working Papers 0210, Centro de Investigacion Economica, ITAM. [Downloadable!]
    Other versions:
  2. David Austen-Smith & Tim Feddersen, 2002. "Deliberation and Voting Rules," Discussion Papers 1359, Northwestern University, Center for Mathematical Studies in Economics and Management Science. [Downloadable!]
  3. Pablo Amorós, 2006. "Eliciting Socially Optimal Rankings from Unfair Jurors," Economic Working Papers at Centro de Estudios Andaluces E2006/10, Centro de Estudios Andaluces. [Downloadable!]
  4. Jerome Mathis, 2006. "Deliberation with Partially Verifiable Information," THEMA Working Papers 2006-03, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise. [Downloadable!]
  5. Hao Li & Sherwin Rosen & Wing Suen, 2000. "Conflicts and Common Interests in Committees," Econometric Society World Congress 2000 Contributed Papers 0341, Econometric Society. [Downloadable!]
    Other versions:
  6. Ulrich Doraszelski, 1999. "Deliberations with Double-Sided Information," Discussion Papers 1276R, Northwestern University, Center for Mathematical Studies in Economics and Management Science. [Downloadable!]
  7. Cesar Martinelli, 2000. "Convergence Results for Unanimous Voting," Working Papers 0005, Centro de Investigacion Economica, ITAM. [Downloadable!]
    Other versions:
  8. Philip Bond & Hülya Eraslan, 2004. "Strategic Voting over Strategic Proposals, Second Version," PIER Working Paper Archive 07-014, Penn Institute for Economic Research, Department of Economics, University of Pennsylvania, revised 02 Jan 2007. [Downloadable!]
  9. John Duggan & Cesar Martinelli, 1999. "A Bayesian Model of Voting in Juries," Working Papers 9904, Centro de Investigacion Economica, ITAM. [Downloadable!]
    Other versions:
  10. Chambers, Christopher P., 2005. "Consistent Representative Democracy," Working Papers 1217, California Institute of Technology, Division of the Humanities and Social Sciences. [Downloadable!]
Statistics
Access and download statistics

Did you know? You can import bibliographic info in various formats into you bibliographic tool, or just into your word processor. See under "publisher info" on each abstract page.

This page was last updated on 2008-7-15.


This information is provided to you by IDEAS at the Department of Economics, College of Liberal Arts and Sciences, University of Connecticut using RePEc data on a server sponsored by the Society for Economic Dynamics.