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• W2952092715 abstract "Abstract Borrowing from the concept of keystone species in ecological food webs, a recent focus in the field of animal behaviour has been keystone individuals: individuals whose impact on population dynamics is disproportionally larger than their frequency in the population. In populations evolving culture, such may be the role of high-magnitude innovators: individuals whose innovations are a major departure from the population’s existing behavioural repertoire. Their effect on cultural evolution is twofold: they produce innovations that constitute a ‘cultural leap’, and, once copied, their innovations may induce further innovations by conspecifics (socially induced innovations), as they explore the new behaviour themselves. I use computer simulations to study the co-evolution of independent innovations, socially induced innovations, and innovation magnitude, and show that while socially induced innovation is assumed here to be less costly than independent innovation, it does not readily evolve. When it evolves, it may in some conditions select against independent innovation and lower its frequency, despite it requiring independent innovation in order to operate; at the same time, however, it leads to much faster cultural evolution. These results confirm the role of high-magnitude innovators as keystones, and suggest a novel explanation for low frequency of independent innovation." @default.
• W2952092715 created "2019-06-27" @default.
• W2952092715 creator A5039655122 @default.
• W2952092715 date "2018-01-04" @default.
• W2952092715 modified "2023-09-26" @default.
• W2952092715 title "High-magnitude innovators as keystone individuals in the evolution of culture" @default.
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• W2952092715 doi "https://doi.org/10.1101/242131" @default.
• W2952092715 hasPublicationYear "2018" @default.
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