What drives people to cooperate with each other? And what characteristics lead a person to do something that will both benefit them, and those around them? Our new research suggests that the answer is intelligence: it is the primary condition for a socially cohesive and cooperative society.
In the past, some economists have suggested that consideration of others and generally pro-social attitudes are what motivate people towards more generous and cooperative behaviours which help sustain a cohesive society. Others have suggested that adhering to good norms and respecting

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