I survey the literature post Ledyard (Handbook of Experimental Economics, ed. by J. Kagel,
A. Roth, Chap. 2, Princeton, Princeton University Press, 1995) on three related issues in …

Humans are outstanding in their ability to cooperate with unrelated individuals, and
punishment–paying a cost to harm others–is thought to be a key supporting mechanism …

Impersonal cooperation among strangers enables societies to create valuable public goods,
such as infrastructure, public services, and democracy. Several factors have been proposed …

A normative conflict arises when multiple plausible rules exist, specifying how one ought to
behave in a given situation. In such cases, enforcing one normative rule can lead to a …

We report evidence from public goods experiments with and without punishment which we
conducted in Russia with 566 urban and rural participants of young and mature age cohorts …

Learning assistance tools used with digital games—commonly called scaffolds—can reduce
player frustration and help them create problem-solving strategies while supporting …

The human ability to establish cooperation, even in large groups of genetically unrelated
strangers, depends upon the enforcement of cooperation norms. Third-party punishment is …

Altruistic punishment may promote cooperation, but can also lead to costly feuds. We
examine how the threat of feuds affects individuals' willingness to engage in altruistic …

Punishing group members who parasitize their own group's resources is an almost universal
human behavior, as evidenced by multiple cross-cultural and theoretical studies. Recently …

We use data from experiments on finitely repeated dilemma games with fixed matching to
investigate the effect of different types of information on cooperation. The data come from 71 …