4.2 Article

Collective Dynamic Choice: The Necessity of Time Inconsistency

Journal

AMERICAN ECONOMIC JOURNAL-MICROECONOMICS
Volume 7, Issue 4, Pages 150-178

Publisher

AMER ECONOMIC ASSOC
DOI: 10.1257/mic.20140161

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Funding

  1. National Science Foundation [SES 0551014, SES 0961481]
  2. Gordon and Betty Moore Foundation [1158]
  3. Direct For Social, Behav & Economic Scie
  4. Divn Of Social and Economic Sciences [0963583] Funding Source: National Science Foundation

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We study collective decisions by time-discounting individuals choosing a common consumption stream. We show that with any heterogeneity in time preferences, every Pareto efficient and non-dictatorial method of aggregating utility functions must be time-inconsistent. We also show that decisions made via non-dictatorial voting methods are intransitive.

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