Models of job tournaments and competitive workplaces more generally predict that while individual effort may increase as competition intensifies between workers, the incentive for workers to cooperate with each other diminishes. We report on a field experiment conducted with workers from a...

Numerous laboratory studies find that minor nuances of presentation and description change behavior in ways that are inconsistent with standard economic models. How much do these context effects matter in natural settings, when consumers make large, real decisions and have the opportunity to...

Time-consuming and costly religious rituals pose a puzzle for economists committed to rational choice theories of human behavior. We propose that religious rituals promote in-group trust and cooperation that help to overcome collective-action problems. To test this hypothesis we design field...

The in-group-out-group bias is among the most well documented and widely observed phenomenon in the social sciences. Despite its role in hiring decisions and job discrimination, negotiations, and conflict and competition between groups, economists have paid little attention to the...

Microfinance has been heralded as an effective way to address imperfections in credit markets. From a theoretical perspective, however, the success of microfinance contracts has puzzling elements. In particular, the group-based mechanisms often employed are vulnerable to free-riding and...

We conducted a natural field experiment to explore the effect of price changes on charitable contributions. To operationalize our tests, we examine whether an offer to match contributions to a non-profit organization changes the likelihood and amount that an individual donates. Direct mail...

We use a sample of subsistence farmers in Sierra Leone as respondents to compare behavior in a context-free experiment (a standard public goods game) and behavior in the field (a real development intervention). There is no meaningful correlation in behavior across contexts. This casts doubt on...

Commitment devices for savings could benefit those with self-control as well as familial or spousal control issues. We examine the impact of a commitment savings product in the Philippines on household decision making power and savings attitudes. We find evidence to support both types of...