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Group Decision and Negotiation

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22-10-2021

What Forms the Trajectory of Social Reforms? The Roles of Decision Rules and Communication under Epistemic Uncertainty

Authors: Taiga Tsubota, Masahide Horita

Published in: Group Decision and Negotiation | Issue 1/2022

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Abstract

This paper presents a theoretical model that explains how decision rules and communication jointly affect collective outcomes in a small community under epistemic uncertainty. To see the likelihood of social reform and the probability of sensible decision-making under uncertainty, we compare two types of decision rules: unanimity rule and majority rule with veto. Also, we analyze the role of communication among voters before the voting occurs. We show that there exist equilibria and that once each player’s preference is determined, the equilibrium behavior is specified. In addition, we use simulation methods to examine how the precision of group decision and the voters’ welfare vary.

previous article A Real Case Application of Game Theoretical Concepts in a Complex Decision-Making Process: Case Study ERTMS

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We thank the referee for clarifying this point.

Again, since the voting system includes the voting set, we say the Unanimity system, not the unanimity rule.

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Title: What Forms the Trajectory of Social Reforms? The Roles of Decision Rules and Communication under Epistemic Uncertainty
Authors: Taiga Tsubota
Masahide Horita
Publication date: 22-10-2021
Publisher: Springer Netherlands
Published in: Group Decision and Negotiation / Issue 1/2022
Print ISSN: 0926-2644
Electronic ISSN: 1572-9907
DOI: https://doi.org/10.1007/s10726-021-09763-w

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