TY - JOUR T1 - Antisocial rewarding in structured populations JF - bioRxiv DO - 10.1101/092932 SP - 092932 AU - Miguel dos Santos AU - Jorge Peña Y1 - 2017/01/01 UR - http://biorxiv.org/content/early/2017/03/09/092932.abstract N2 - Cooperation in collective action dilemmas usually breaks down in the absence of additional incentive mechanisms. This tragedy can be escaped if cooperators have the possibility to invest in reward funds that are shared exclusively among cooperators (prosocial rewarding). Yet, the presence of defectors who do not contribute to the public good but do reward themselves (antisocial rewarding) deters cooperation in the absence of additional countermeasures. Although a recent simulation study suggests that interactions in spatially structured populations are sufficient to prevent antisocial rewarding from deterring cooperation, the exact role of spatial structure on the evolution of public goods cooperation with reward funds remains unclear. To address this issue, we formulated and analyzed a game-theoretic model of social interactions in structured populations. We show that increasing reward funds facilitates the maintenance of prosocial rewarding but prevents its evolution from rare in spatially structured populations. Moreover, we demonstrate that spatial structure can sometimes select against the evolution of prosocial rewarding. Our results suggest that, even in spatially structured populations, additional mechanisms are required to prevent antisocial rewarding from deterring cooperation in public goods dilemmas. ER -