Exploring how community-based social norms evolve

Cooperation is a guiding principle of everyday life. It's as simple as following the rules of the road when driving or holding a door for a stranger; cooperation is a fundamental aspect of human societies and has long intrigued ...

Cooperation among strangers has increased since the 1950s

Despite common concerns that the social fabric is fraying, cooperation among strangers has gradually increased in the U.S. since the 1950s, according to research published by the American Psychological Association.

Is not helping a bad person good or bad?

A research team led by Hitoshi Yamamoto from Rissho University has analyzed how the social norm of indirect reciprocity is adopted in human society and revealed results that contradict previous theoretical predictions. The ...

Is punishment as effective as we think?

A game to study human behavior has shown punishment is an ineffective means for promoting cooperation among players. The result has implications for understanding how cooperation has evolved to have a formative role in human ...

Evolving righteousness in a corrupt world

Initially cooperative societies devolve toward corruption, but introducing small "payments" in conjunction with punishment can lead to stable, righteous societies, according to a modeling study published Sep. 12 in the open ...

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