Schmitz, Patrick W. and Tröger, Thomas (2011): The (sub-)optimality of the majority rule.
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We consider collective choice from two alternatives. Ex ante, each agent is uncertain about which alternative she prefers, and may be uncertain about the intensity of her preferences. An environment is given by a probability distribution over utility vectors that is symmetric across agents and neutral across alternatives. In many environments, the majority voting rule maximizes agents' ex-ante expected utilities among all anonymous and dominant-strategy implementable choice rules. But in some environments where the agents' utilities are stochastically correlated, other dominant-strategy choice rules are better for all agents. If utilities are stochastically independent across agents, majority voting is ex-ante optimal among all anonymous and incentive-compatible rules. We also compare rules from an interim viewpoint.
|Item Type:||MPRA Paper|
|Original Title:||The (sub-)optimality of the majority rule|
|Subjects:||D - Microeconomics > D7 - Analysis of Collective Decision-Making > D72 - Political Processes: Rent-Seeking, Lobbying, Elections, Legislatures, and Voting Behavior|
|Depositing User:||Patrick W. Schmitz|
|Date Deposited:||09. Aug 2011 20:37|
|Last Modified:||16. Feb 2013 08:22|
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