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user-inactivated · 3487 days ago · link · · parent · post: Romantic or disgusting? Passionate kissing is not a human universal.
Hmm. I can see only the most basic of social behaviors being genetically encoded, such as paying attention to the cry of a baby that is not yours. Maybe they're taking something that works on a very basic scale and are trying to cast too broad of a net with it.The basis of the field is that not only traits but certain social factors are also genetically encoded.