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Evolution of indirect reciprocity by image scoring

Evolution of indirect reciprocity by image scoring,Nature,Martin A. Nowak,Karl Sigmund

Evolution of indirect reciprocity by image scoring   (Citations: 567)
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of indirect reciprocity. We show that the probability of knowing the 'image' of the recipient must exceed the cost-to-benefit ratio of the altruistic act. We propose that the emergence of indirect reciprocity was a decisive step for the evolution of human societies.
Journal: Nature , 2004
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