Cooperation is central to human societies. Yet relatively little is known about the cognitive underpinnings of cooperative decision-making. Does cooperation require deliberate self-restraint? Or is spontaneous prosociality reined in by calculating self-interest? Here we present a theory of why...

We experimentally investigate the nature of cooperation in various repeated games, with subjects from Romania and USA. We find stark cross-country differences in the propensity to sustain multilateral cooperation through bilateral rewards and punishments. U.S. groups perform well because...

Background: Economic risk taking is different from social risk taking. In experimental economics, the former is typically measured through an individual’s willingness to trade off variance for expected value, whereas the latter is typically measured by the trust game (TG) where one individual...

Behavioral and economic analysis of law fundamentally depends on understanding what motivates individual actors. While it is often assumed that people care only about maximizing their own monetary payoff, recent experimental work has challenged this assumption. A canonical example involves...

The role of religion in human cooperation remains a highly contested topic. Recent studies using economic game experiments to explore this issue have been largely inconclusive, yielding a range of conflicting results. In this study, we investigate the ability of religion to promote cooperation...

Trust is a central component of social and economic interactions among humans. While rational self-interest dictates that "investors" should not be trusting and "trustees" should not be trustworthy in one-shot anonymous interactions, behavioral experiments with the "trust game" have found that...

What is the extent and nature of religious prosociality? If religious prosociality exists, is it parochial and extended selectively to co-religionists, or is it generalized regardless of the recipient? Further, is it driven by preferences to help others or by expectations of reciprocity? We...

Recent work using decontextualized economic games suggests that cooperation is a dynamic decision-making process: automatic responses typically support cooperation on average, while deliberation leads to increased selfishness. Here we performed two studies examining how these temporal effects...

Large-scale cooperation, or the willingness of individuals to incur costs in order to help others, is a defining trait of the human species. However, cooperation poses a theoretical puzzle: since it is individually costly to cooperate, it seems that natural selection should favor non-cooperation...

When people have the chance to help others at a cost to themselves, are cooperative decisions driven by intuition or reflection? To answer this question, recent studies have tested the relationship between reaction times and cooperation, reporting both positive and negative correlations. To...