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EP140 Robin Dunbar on Friendship

The Jim Rutt Show

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Predicting the Group Size of Humans Based on Brain Size

The regression equation predicts that humans would have a group size of about 150 based on the size of their brain./nThe speaker acknowledges that this estimate may be too small given the size of modern human societies./nThe speaker suggests looking at the group sizes of traditional hunter-gatherer societies to gain insight into human communities./nIdentifying the equivalent community type in humans to compare with monkeys and apes is challenging due to the complex social structure of humans./nHumans live in a hierarchical social system with small groups nested within larger groups.

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