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The burden of proof for a cultural group selection account

  • Pat Barclay (a1) and Daniel Brian Krupp (a2) (a3)


Richerson et al. establish cultural group selection as a plausible force in human social evolution. However, they do not demonstrate its causal precedence for any trait, let alone its “essentialness.” To do so, they must show that a particular group trait was caused by cultural transmission, and directly caused differences in group fitness.



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