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Collegial decision making based on social amplification leads to optimal group formation.

ABSTRACT: Group-living animals are often faced with choosing between one or more alternative resource sites. A central question in such collective decision making includes determining which individuals induce the decision and when. This experimental and theoretical study of shelter selection by cockroach groups demonstrates that choices can emerge through nonlinear interaction dynamics between equal individuals without perfect knowledge or leadership. We identify a simple mechanism whereby a decision is taken on the move with limited information and signaling and without comparison of available opportunities. This mechanism leads to optimal mean benefit for group individuals. Our model points to a generic self-organized collective decision-making process independent of animal species.

SUBMITTER: Ame JM

PROVIDER: S-EPMC1458659 | biostudies-literature | 2006 Apr

REPOSITORIES: biostudies-literature

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Collegial decision making based on social amplification leads to optimal group formation.

Amé Jean-Marc JM Halloy José J Rivault Colette C Detrain Claire C Deneubourg Jean Louis JL

Proceedings of the National Academy of Sciences of the United States of America 20060331 15

Group-living animals are often faced with choosing between one or more alternative resource sites. A central question in such collective decision making includes determining which individuals induce the decision and when. This experimental and theoretical study of shelter selection by cockroach groups demonstrates that choices can emerge through nonlinear interaction dynamics between equal individuals without perfect knowledge or leadership. We identify a simple mechanism whereby a decision is t ...[more]

PMID: 16581903

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