An evolutionarily stable scoring rule for indirect reciprocity

Activity: Talk or presentationScience to science


Indirect reciprocity is a mechanism which might provide a solution to the puzzle of how cooperation has evolved. Image scoring is a simple first-order assessment rule which bases an individual's reputation only on its past behavior. If reputation is binary (either "Good" or "Bad"), then conditional cooperation is evolutionarily stable under some higher-order assessment rules, but not under image scoring, which has led to a dismissal of the scoring rule. Here we show that introducing "Neutral" alongside Good and Bad types allows conditional cooperation to persist under image scoring.
Period1 Oct 2008
Event titleMiniworkshop on Evolutionary Game Theory
Event typeUnkonwn
Degree of RecognitionNational