DOI: 10.1016/j.tree.2017.06.004
论文题名: Individual Confidence-Weighting and Group Decision-Making
作者: Marshall J.A.R. ; Brown G. ; Radford A.N.
刊名: Trends in Ecology and Evolution
ISSN: 1695347
出版年: 2017
卷: 32, 期: 9 起始页码: 636
结束页码: 645
语种: 英语
英文关键词: collective behaviour
; consensus decisions
; cooperative breeders
; decision accuracy
; drift-diffusion model
; vocal communication
Scopus关键词: Animalia
英文摘要: Group-living species frequently pool individual information so as to reach consensus decisions such as when and where to move, or whether a predator is present. Such opinion-pooling has been demonstrated empirically, and theoretical models have been proposed to explain why group decisions are more reliable than individual decisions. Behavioural ecology theory frequently assumes that all individuals have equal decision-making abilities, but decision theory relaxes this assumption and has been tested in human groups. We summarise relevant theory and argue for its applicability to collective animal decisions. We consider selective pressure on confidence-weighting in groups of related and unrelated individuals. We also consider which species and behaviours may provide evidence of confidence-weighting, paying particular attention to the sophisticated vocal communication of cooperative breeders. Theory as applied to collective decision-making by non-human animals frequently assumes that all animals have equal decision-making abilities and access to equal-quality information. Decision theory shows that the optimal group decision-making strategy is to weight contributions to group decisions according to the decision accuracy or ‘subjective confidence’ of the contributor. Human groups have been shown to be able to combine judgements optimally, accounting for variations in subjective confidence. Collectively deciding animals, particularly groups of cooperative breeders, have sophisticated vocal communication abilities and may provide suitable systems to test theory. The time taken to reach a decision, or hesitancy, provides a link between optimal individual decision-making and optimal group decision-making, and may easily be evaluated by individuals. © 2017 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66883
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: Department of Computer Science and Sheffield Robotics, University of Sheffield, Regent Court, 211 Portobello, Sheffield, United Kingdom; School of Computer Science, University of Manchester, Oxford Road, Manchester, United Kingdom; School of Biological Sciences, University of Bristol, 24 Tyndall Avenue, Bristol, United Kingdom
Recommended Citation:
Marshall J.A.R.,Brown G.,Radford A.N.. Individual Confidence-Weighting and Group Decision-Making[J]. Trends in Ecology and Evolution,2017-01-01,32(9)