进化视角下的社会身份基础

Abstract Social identity theory provides a rich description of how humans relate to various kinds of social groups, but no substantive account of why human psychology evolved to be so group-minded in the first place. We propose that the evolutionarily original form of social identity was one's moral identity as a cooperative group member. For ancient humans, survival depended on being an assimilated member of a cultural group, which, in turn, competed against other groups. In this context, humans evolved skills and motivations for engaging in the collective agency of a cultural group, especial