Consensus decision making in human crowds

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Dyer_0-422211.pdf
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2008
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Dyer, John R. G.
Ioannou, Christos C.
Morrell, Lesley J.
Croft, Darren P.
Waters, Dean A.
Krause, Jens
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Zusammenfassung

In groups of animals only a small proportion of individuals may possess particular information, such as a migration route or the direction to a resource. Individuals may differ in preferred direction resulting in conflicts of interest and, therefore, consensus decisions may have to be made to prevent the group from splitting. Recent theoretical work has shown how leadership and consensus decision making can occur without active signalling or individual recognition. Here we test these predictions experimentally using humans. We found that a small informed minority could guide a group of naïve individuals to a target without verbal communication or obvious signalling. Both the time to target and deviation from target were decreased by the presence of informed individuals. When conflicting directional information was given to different group members, the time taken to reach the target was not significantly increased; suggesting that consensus decision making in conflict situations is possible, and highly efficient. Where there was imbalance in the number of informed individuals with conflicting information, the majority dictated group direction. Our results also suggest that the spatial starting position of informed individuals influences group motion, which has implications in terms of crowd control and planning for evacuations.

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570 Biowissenschaften, Biologie
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collective behaviour, consensus decision making, human crowd, information transfer, leadership
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undefined / . - undefined, undefined
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ISO 690DYER, John R. G., Christos C. IOANNOU, Lesley J. MORRELL, Darren P. CROFT, Iain D. COUZIN, Dean A. WATERS, Jens KRAUSE, 2008. Consensus decision making in human crowds. In: Animal Behaviour. 2008, 75(2), pp. 461-470. ISSN 0003-3472. eISSN 1095-8282. Available under: doi: 10.1016/j.anbehav.2007.05.010
BibTex
@article{Dyer2008-02Conse-39934,
  year={2008},
  doi={10.1016/j.anbehav.2007.05.010},
  title={Consensus decision making in human crowds},
  number={2},
  volume={75},
  issn={0003-3472},
  journal={Animal Behaviour},
  pages={461--470},
  author={Dyer, John R. G. and Ioannou, Christos C. and Morrell, Lesley J. and Croft, Darren P. and Couzin, Iain D. and Waters, Dean A. and Krause, Jens}
}
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