The dark side of the vote: biased voters, social information, and information aggregation through majority voting

We experimentally investigate information aggregation through majority voting when some voters are biased. In such situations, majority voting can have a "dark side", that is, result in groups making choices inferior to those made by individuals acting alone. In line with theoretical predi...

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Bibliographische Detailangaben
Hauptverfasser: Morton, Rebecca B. 1954- (VerfasserIn), Piovesan, Marco (VerfasserIn), Tyran, Jean-Robert 1967- (VerfasserIn)
Format: Elektronisch E-Book
Sprache:English
Veröffentlicht: Berlin WZB 2013
Schriftenreihe:Discussion paper
Online-Zugang:Volltext
http://hdl.handle.net/10419/86141
Zusammenfassung:We experimentally investigate information aggregation through majority voting when some voters are biased. In such situations, majority voting can have a "dark side", that is, result in groups making choices inferior to those made by individuals acting alone. In line with theoretical predictions, information on the popularity of policy choices is beneficial when a minority of voters are biased, but harmful when a majority is biased. In theory, information on the success of policy choices elsewhere de-biases voters and alleviates the inefficiency. However, in the experiment, providing social information on success is ineffective and does not de-bias voters.
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