The theory of norm psychology proposed by Sripada & Stich, and many other theories in which social learning plays a major role, suggests that people will often internalize norms that reduce their own biological fitness. It might be thought that no such psychological mechanism could possibly evolve. But that would be a mistake. In this talk I’ll explain why it was all but inevitable that natural selection would lead to norm psychology in our species, once we had acquired the ability to learn from one another. The account I’ll offer explains why many human norms foster cooperative or pro-social behavior. It also explains why many human norms lead to ethnic hatred and morally repugnant behavior. If the account is correct, these norms will be very difficult to dislodge, and robust cultural differences in norms are likely to be widespread.

링크: http://xphi-europe.org/seoul2014/#body