sequentially. We nd thatpure indirect reciprocity enables mutual cooperation although strategicconsiderations and group size are …A cyclical network of indirect reciprocity is derived organizing 3- or6-person groups into rings of social interaction … first. Mutual cooperation is triggered by assuming thatwhat one passes on to the next is multiplied by a factor of 3 …

punishment costs. The negative effect of altruism on cooperation and material payoffs is greater the stronger is the reciprocity … additive. But this need not be the case. Behavioral experiments find that if reciprocity-minded subjects feel hostility towards … when group members have opportunities to punish low contributors. Cooperation may also be supported if individuals are …

We investigate experimentally whether the extent of conditional cooperation in public good games depends on the … conditional cooperation. We also find no evidence that the type of game makes a difference to unconditional contributions. The …

We investigate experimentally whether the extent of conditional cooperation in public good games depends on the … leads and three follow. Even though we observe less conditional cooperation for an MPCR of 0.2, the prevalence of … conditional cooperation remains relatively stable to changes in the MPCR and game timing. In contrast, the level of MPCR has a …