Mounting evidence suggests that the outcomes of laboratory public goods games, and collective action in firms, communities, and polities, reflect the presence in most groups of individuals having differing preferences and beliefs. We designed a public goods experiment with targeted punishment...

We construct a dedicated web interface and use it to conduct a laboratory experiment to study willingness to lend and preference over borrowers in micro-finance lending. We distinguish between perceptions of transaction-related factors, such as neediness and trustworthiness, and identity-related...

We study trust and willingness to cooperate among and between Uyghur and Han college students in Xinjiang, China, where tensions exist between the two ethnic groups. We conduct an incentivized laboratory-style decision-making experiment in which within and between group interactions occur among...

We use a two-phase experimental design to study how systematically manipulated beliefs about trust and trustworthiness can promote or deter cooperation. We use decisions in an initially played trust game to create five environments that differ in the information subjects have about the relative...

Recent experimental studies question whether societies can selfgovern social dilemmas with the help of decentralized punishment opportunities. One important challenge for the mechanism is imperfect information about cooperative behavior. It has been shown that imperfect information increases...

We present results from a repeated public goods experiment where subjects choose by vote one of two sanctioning schemes: peer-to-peer (informal) or centralized (formal). We introduce, in some treatments, a moderate amount of noise (a 10 percent probability that a contribution is reported...

We study a laboratory social dilemma game in which incentives to steal from others lead to the socially inefficient diversion of resources from production unless the members of a given mini-society can abide by norms of non-theft or engage in low cost collective protection of their members'...

Why is there significant political support for progressive taxation and equalizing government transfers in western democracies? Possibilities include individual socail preferences for a less unequal distribution than what market forces alone would dictate, demand for social insurance, or...

We study the. Incentive effects of endogenous group formation in a voluntary contributon experiment. Subjects are given information on the past contributions of others and allowed to express a preference for partners. On the basis of the stated preferences new groups are formed. We find that the...

We use two types of cross-country growth regression models to revisit explanations of slow growth in Africa looking at growth rate variation among African countries only. Both sets of models produce results that are surprising given conclusions based on global sample: within Africa, we .nd...