warm-glow motive. Second, the paper confirms the economic relevance of reciprocity by using field data. This extends the … current body of research on reciprocity, which is almost exclusively confined to laboratory studies. …

health, and fairness of pay. …

theories of fairness and reciprocity capture these forces. We find that cooperators’ punishment is almost exclusively targeted … between different fairness principles. Fairness theories that are based on the assumption that players compare their own … the defectors. Fairness theories assuming that players aim to minimize payoff inequalities cannot explain the fact that …

We study the intrapersonal relationship between trust and reciprocity in a laboratory experiment. Reciprocal subjects …

paper, we conduct laboratory experiments in which we explore the motivations for and the effects of group identity. We find …

public good experiments, we find that contributions are increasing over time even in the absence of punishment possibilities …