Decision process and preferences over risk under the “endogenous decision ruleâ€: results from a group experiment

Andrea Morone, Simone Nuzzo and Tiziana Temerario

Economics and Business Letters, 2021, vol. 10, issue 2, 107-115

Abstract: Recent literature on individual vs.  group decision-making, in risky contexts, has brought about divergent results, mainly depending on the institutional rules through which groups take decisions. Some studies where group decisions relied on majority rule showed no appreciable difference between individuals and groups’ preferences, others where unanimity among group members was required found collective decisions to be less risk-averse than individual ones. We elicited groups’ preferences over risk using what we defined “endogenous-decision-rule†, i.e. leaving groups free to endogenously solve the potential disagreement among their members. Our results unambiguously show that individuals are more risk seeker than groups when facing gambles with positive expected payoff difference and more risk-averse in the opposite case.

Date: 2021
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