Indirect Reciprocity, Image-Scoring and Moral Hazard

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/5105 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/5105 http://eprints.org/relation/isCoversheetVersionOf https://pure.iiasa.ac.at/id/document/5105 archive 351 disk0/00/00/77/64 2016-01-15 02:18:32 2021-08-27 17:19:13 2016-01-15 02:18:32 monograph show 3 Brandt H. 7736 Sigmund K. 1050 Indirect Reciprocity, Image-Scoring and Moral Hazard pub iis_ecl prog_adn Cooperation; Reputation; Evolutionary dynamics Whether one-shot interactions can stably sustain mutual cooperation if they are based on a minimal form of reputation building has been the subject of considerable debate. We show by mathematical modeling that the answer is positive if we assume an individual's social network evolves in time. In this case, a stable mixture of discriminating and undiscriminating altruists can be proof against invasion by defectors. This sheds light on current discussions about the merits of different types of moral assessment, an issue where theoretical arguments and experimental findings seem at odds.Unexpectedly, our approach also relates to the proverbial observation that people tend to become more tightfisted with age. 2005-12 published IR-05-078 IR-05-078 1166 282 public interim_report IIASA, Laxenburg, Austria 10 FALSE info:eu-repo/semantics/book