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Deliberation, Leadership and Information Aggregation



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Rivas, Javier and Rodríguez Álvarez, Carmelo (2017) Deliberation, Leadership and Information Aggregation. Manchester School, 85 (4). pp. 395-429. ISSN 1467-9957

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Official URL: https://doi.org/10.1111/manc.12151


We analyze a committee of voters who take a decision via a two-stage process. In a discussion stage, voters share non-verifiable information about a private signal concerning what is the best decision. In a voting stage, a decision is taken by voting. We introduce the possibility of leadership whereby a certain voter, the leader, is more influential than the rest at the discussion stage even though she is not better informed. We study the effects of leadership on information transmission and the quality of the choice made by the committee, and how these effects depend on the specific voting rule employed. We find that how truthful voters are at the discussion stage depends non-monotonically on how influential the leader is. Moreover, when the leaders influence is relatively high, supermajority voting rules may increase the probability of choosing the best option when compared with the majority voting rule.

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We would like to thank Salvador Barbera, Matthias Dahm, Antoine Loeper, Jo Seldeslachts, Chris Wallace and seminar participants at the University of Aberdeen, University of Bath, University of Leicester, University of Manchester, Universidad Publica de Navarra and Universidade de Vigo. Rodrıguez-Alvarez gratefully acknowledges the financial support from Junta de Andalucıa through research grant SEJ5980, from Plan Nacional I1D through research grant MINECO-2014-56676-C2-2-P, and from Fundacion Ramon Areces.

Uncontrolled Keywords:Committees; Information Aggregation; Leadership; Voting.
Subjects:Social sciences > Economics > Econometrics
ID Code:57240
Deposited On:07 Oct 2019 10:54
Last Modified:07 Oct 2019 12:06

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