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The generalized homogeneity assumption and the Condorcet jury theorem

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  • Ruth Ben-Yashar

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Abstract

The Condorcet jury theorem (CJT) is based on the assumption of homogeneous voters who imperfectly know the correct policy. We reassess the validity of the CJT when voters are homogeneous and each knows the correct decision with an average probability of more than a half. Copyright Springer Science+Business Media New York 2014

Suggested Citation

  • Ruth Ben-Yashar, 2014. "The generalized homogeneity assumption and the Condorcet jury theorem," Theory and Decision, Springer, vol. 77(2), pages 237-241, August.
  • Handle: RePEc:kap:theord:v:77:y:2014:i:2:p:237-241
    DOI: 10.1007/s11238-013-9395-y
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    References listed on IDEAS

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    1. Austen-Smith, David & Banks, Jeffrey S., 1996. "Information Aggregation, Rationality, and the Condorcet Jury Theorem," American Political Science Review, Cambridge University Press, vol. 90(1), pages 34-45, March.
    2. Bernard Grofman, 1975. "A comment on ‘democratic theory: A preliminary mathematical model.’," Public Choice, Springer, vol. 21(1), pages 99-103, March.
    3. Ben-Yashar, Ruth C & Nitzan, Shmuel I, 1997. "The Optimal Decision Rule for Fixed-Size Committees in Dichotomous Choice Situations: The General Result," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 38(1), pages 175-186, February.
    4. Ladha, Krishna K., 1995. "Information pooling through majority-rule voting: Condorcet's jury theorem with correlated votes," Journal of Economic Behavior & Organization, Elsevier, vol. 26(3), pages 353-372, May.
    5. Ruth Ben-Yashar & Mor Zahavi, 2011. "The Condorcet jury theorem and extension of the franchise with rationally ignorant voters," Public Choice, Springer, vol. 148(3), pages 435-443, September.
    6. Ruth Ben-Yashar & Igal Milchtaich, 2007. "First and second best voting rules in committees," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 29(3), pages 453-486, October.
    7. Iain McLean (ed.), 1994. "Condorcet," Books, Edward Elgar Publishing, number 309, July.
    8. Daniel Berend & Luba Sapir, 2005. "Monotonicity in Condorcet Jury Theorem," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 24(1), pages 83-92, August.
    9. Ruth Ben-Yashar & Jacob Paroush, 2000. "A nonasymptotic Condorcet jury theorem," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 17(2), pages 189-199.
    10. Berg, Sven & Paroush, Jacob, 1998. "Collective decision making in hierarchies," Mathematical Social Sciences, Elsevier, vol. 35(3), pages 233-244, May.
    11. Raaj Kumar Sah, 1991. "Fallibility in Human Organizations and Political Systems," Journal of Economic Perspectives, American Economic Association, vol. 5(2), pages 67-88, Spring.
    12. Scott Feld & Bernard Grofman, 1984. "The accuracy of group majority decisions in groups with added members," Public Choice, Springer, vol. 42(3), pages 273-285, January.
    13. Sah, Raaj Kumar & Stiglitz, Joseph E, 1988. "Committees, Hierarchies and Polyarchies," Economic Journal, Royal Economic Society, vol. 98(391), pages 451-470, June.
    14. Daniel Berend & Jacob Paroush, 1998. "When is Condorcet's Jury Theorem valid?," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 15(4), pages 481-488.
    15. Nitzan, Shmuel & Paroush, Jacob, 1982. "Optimal Decision Rules in Uncertain Dichotomous Choice Situations," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 23(2), pages 289-297, June.
    16. Ruth Ben-Yashar, 2006. "Information is important to Condorcet jurors," Public Choice, Springer, vol. 127(3), pages 305-319, June.
    17. Eyal Baharad & Ruth Ben-Yashar, 2009. "The robustness of the optimal weighted majority rule to probability distortion," Public Choice, Springer, vol. 139(1), pages 53-59, April.
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    Citations

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    Cited by:

    1. Ruth Ben-Yashar & Shmuel Nitzan, 2017. "Are two better than one? A note," Public Choice, Springer, vol. 171(3), pages 323-329, June.
    2. Alexander Lundberg, 2020. "The importance of expertise in group decisions," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 55(3), pages 495-521, October.
    3. Ruth Ben-Yashar & Shmuel Nitzan, 2017. "Is diversity in capabilities desirable when adding decision makers?," Theory and Decision, Springer, vol. 82(3), pages 395-402, March.
    4. BEN-YASHAR, Ruth & NITZAN, Shmuel, 2016. "Is Diversity in Capabilities Desirable When Adding Decision Makers?," Discussion paper series HIAS-E-21, Hitotsubashi Institute for Advanced Study, Hitotsubashi University.
    5. Baharad, Eyal & Ben-Yashar, Ruth & Patal, Tal, 2020. "On the merit of non-specialization in the context of majority voting," Journal of Mathematical Economics, Elsevier, vol. 87(C), pages 128-133.

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