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<p>This paper investigates the formation of dynamically consistent collective preferences in environments involving both time and uncertainty. Traditional aggregation methods often treat these dimensions separately, resulting in fragmented insights. We propose a preference aggregation rule–the <i>utilitarian-boolean-geometric</i> rule–that ensures dual-level dynamic consistency. We show that this rule can be fully characterized by a set of simple and intuitive axioms. Our findings also extend to a broader range of intertemporal utilities, providing a comprehensive approach to ensuring dynamic consistency in collective decisions.</p>

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Intertemporal collective choice and dynamic consistency

  • 期刊论文

  • 发表日期：

    2026年2月24日

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  • Xiaoxi Li,
  • Xiangyu Qu

摘要

This paper investigates the formation of dynamically consistent collective preferences in environments involving both time and uncertainty. Traditional aggregation methods often treat these dimensions separately, resulting in fragmented insights. We propose a preference aggregation rule–the utilitarian-boolean-geometric rule–that ensures dual-level dynamic consistency. We show that this rule can be fully characterized by a set of simple and intuitive axioms. Our findings also extend to a broader range of intertemporal utilities, providing a comprehensive approach to ensuring dynamic consistency in collective decisions.