Human inbreeding avoidance: Culture in nature

@article{Berghe1983HumanIA,
  title={Human inbreeding avoidance: Culture in nature},
  author={Pierre van den Berghe},
  journal={Behavioral and Brain Sciences},
  year={1983},
  volume={6},
  pages={91 - 102}
}
Abstract Much clinical and ethnographic evidence suggests that humans, like many other organisms, are selected to avoid close inbreeding because of the fitness costs of inbreeding depression. The proximate mechanism of human inbreeding avoidance seems to be precultural, and to involve the interaction of genetic predispositions and environmental conditions. As first suggested by E. Westermarck, and supported by evidence from Israeli kibbutzim, Chinese sim-pua marriage, and much convergent… 
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