‘Dunbar's number’ deconstructed
收藏DataCite Commons2025-05-01 更新2025-05-10 收录
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https://datadryad.org/dataset/doi:10.5061/dryad.ghx3ffbnn
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资源简介：
A widespread and popular belief posits that humans possess a cognitive
capacity that is limited to keeping track of and maintaining stable
relationships with approximately 150 people. This influential number,
‘Dunbar's number’, originates from an extrapolation of a regression
line describing the relationship between relative neocortex size and group
size in primates. Here, we test if there is statistical support for this
idea. Our analyses on complementary datasets using different methods yield
wildly different numbers. Bayesian and generalized least-squares
phylogenetic methods generate approximations of average group sizes
between 69–109 and 16–42, respectively. However, enormous 95% confidence
intervals (4–520 and 2–336, respectively) imply that specifying any one
number is futile. A cognitive limit on human group size cannot be derived
in this manner.
提供机构：
Dryad
创建时间：
2021-03-26
