Cooperation and control in multiplayer social dilemmas

摘要: Direct reciprocity and conditional cooperation are important mechanisms to prevent free riding in social dilemmas. However, large groups, these may become ineffective because they require single individuals have a substantial influence on their peers. the recent discovery of zero-determinant strategies iterated prisoner’s dilemma suggests that we underestimated degree control player can exert. Here, develop theory for multiplayer dilemmas, with any number involved players. We distinguish several particularly interesting subclasses strategies: fair ensure own payoff matches average group; extortionate allow perform above average; generous let below average. use this describe sustain cooperation, including generalized variants Tit-for-Tat Win-Stay Lose-Shift. Moreover, explore two models show how further enhance strategic options by coordinating play others. Our results highlight importance individual coordination succeed groups.