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A model of deliberative and aggregative democracy

ARAN - Access to Research at NUI Galway

Show simple item record Perote Pena, Juan Piggins, Ashley 2011-11-11T10:32:21Z 2011-11-11T10:32:21Z 2011-02
dc.identifier.citation Perote Pena, J., & Piggins, A. (2011). A model of deliberative and aggregative democracy (Working paper no. 170). Galway: Department of Economics, National University of Ireland, Galway. en_US
dc.description.abstract We present a model of collective decision making in which voting and deliberation are treated simultaneously. Political theorists argue that public discussion can lead individuals to change their preferences. This aspect of democracy is typically ignored in models of social choice that focus exclusively on voting. In our model, individuals debate in a public forum and potentially revise their preferences in light of deliberation. Once this process is exhausted, a voting rule is applied to aggregate post-deliberation preferences into a social choice. Restricting attention to three alternatives, we identify conditions under which a democracy is truth-revealing in the sense that the deliberation path and the voting rule will always lead to the correct social choice being made, irrespective of the original profile of preferences and size of the electorate (provided the latter is finite). A critical parameter in the model is the persuasion cost. When this is low, a democracy is almost always truth-revealing. When it is high, we have the standard social choice model and truthful revelation is impossible. Moreover, we identify when and only when truthful revelation occurs in an interesting intermediate case. en_US
dc.format application/pdf en_US
dc.language.iso en en_US
dc.publisher National University of Ireland, Galway en_US
dc.relation.ispartofseries Economics Working Papers;170
dc.subject Economics en_US
dc.subject Deliberative democracy en_US
dc.subject Aggregation en_US
dc.subject Scoring rules en_US
dc.title A model of deliberative and aggregative democracy en_US
dc.type Working Paper en_US
dc.description.peer-reviewed peer-reviewed en_US
dc.contributor.funder Irish Research Council for the Humanities and Social Sciences en_US
dc.contributor.funder Spanish Ministry of Science and Innovation (MICINN/FEDER grants ECO2010-21624 and ECO2010-14929) en_US
dc.contributor.funder NUI Galway Millennium Fund en_US

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