Social network architecture and the tempo of cumulative cultural evolution.

Social network architecture and the tempo of cumulative cultural evolution.
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DOI:
10.1098/rspb.2020.3107
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发表时间:
2021-03-10
期刊:
Proceedings. Biological sciences
影响因子:
--
通讯作者:
Farine DR
Farine DR
中科院分区:
其他
文献类型:
--
作者:
Cantor M;Chimento M;Smeele SQ;He P;Papageorgiou D;Aplin LM;Farine DR

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建立在先前知识基础上的能力-累积的文化进化-是人类社会的标志。虽然累积的文化进化取决于社会制度、认知和环境之间的相互作用,但越来越多的证据表明,累积的文化进化是由更大、更有组织的社会促进的。然而,这种影响可能与社会连接模式相互关联,因此,社会网络架构作为塑造累积文化进化的额外因素的相对重要性仍然不清楚。通过模拟具有定型社会结构的人群中文化特征的创新和扩散,我们将网络结构的相对贡献与人口规模和连通性的相对贡献分开。我们证明,虽然更结构化的网络,如在多层次社会中发现的网络,可以促进文化特征重组成高价值的产品,但它们也阻碍了传播,使产品更容易灭绝。我们发现,传输机制,因此,在确定累积的文化进化的结果是至关重要的。我们的研究结果突出了人口规模,结构和传播机制之间的复杂相互作用,对未来的研究具有重要意义。
The ability to build upon previous knowledge—cumulative cultural evolution—is a hallmark of human societies. While cumulative cultural evolution depends on the interaction between social systems, cognition and the environment, there is increasing evidence that cumulative cultural evolution is facilitated by larger and more structured societies. However, such effects may be interlinked with patterns of social wiring, thus the relative importance of social network architecture as an additional factor shaping cumulative cultural evolution remains unclear. By simulating innovation and diffusion of cultural traits in populations with stereotyped social structures, we disentangle the relative contributions of network architecture from those of population size and connectivity. We demonstrate that while more structured networks, such as those found in multilevel societies, can promote the recombination of cultural traits into high-value products, they also hinder spread and make products more likely to go extinct. We find that transmission mechanisms are therefore critical in determining the outcomes of cumulative cultural evolution. Our results highlight the complex interaction between population size, structure and transmission mechanisms, with important implications for future research.
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