Source: The Conversation â USA â By Keith Yoder, Postdoctoral Scholar in Social Cognitive Neuroscience, University of Chicago
Looking out for number one has been important for survival for as long as there have been human beings.
But self-interest isnât the only trait that helped people win at evolution. Groups of individuals who were predisposed to cooperate, care for each other and uphold social norms of fairness tended to survive and expand relative to other groups, thereby allowing these prosocial motivations to proliferate.
So today, concern for oneself and concern for others both contribute to our sense of fairness. Together they facilitate cooperation among unrelated individuals, something ubiquitous among people but uncommon in nature.
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