Evidence for positive reciprocity, where subjects give more than dictators with the same endowment, has always been rare. We investigate the significant positive reciprocity in a prior experiment which broke a trust game into a 2-stage dictator game. There, the 2nd dictator knew that the 1st...

In contrast to guilt based reciprocity, which hypothesizes that reciprocity is an increasing function of the 2nd order expectation of the trustors’ 1st order expectations for reciprocation, we tested for reciprocity that is a decreasing function of the trustees’ 2nd order expectations, i.e.,...

A controversy has been simmering in law about whether pro bono work should be mandatory for lawyers. This debate has tended to neglect the credence good aspect of the services of experts (e.g., of doctors, lawyers, and accountants), and the role that voluntary pro bono work might play. Expert...

Gifts are often used where the institutions of contracting do not exist, or are underdeveloped, as in emerging markets, or otherwise unenforceable, as with illicit transactions in developed markets. The following is an analysis of gifts in the context of belief preferences with unobservable...

The mixed strategy Nash equilibrium (MNE) is a well-established concept in theory, but empirical and experimental support has been hampered by the need for a large sample size for across-subject choices and serial correlation for within-subject choices. We overcome these difficulties in testing...

A large body of chiefly laboratory research has attempted to demonstrate that people can exhibit choice-averse behavior from cognitive overload when faced with many options. However, meta-analyses of these studies, which are generally of one or two product lines, reveal conflicting results....

A controversy has been simmering in law for at least 30 years about whether pro bono work should be mandatory for lawyers, who now donate 1-3% of their time to the poor. This has centered on the unmet legal needs of the poor, the duty of lawyers, and the contrast with US doctors, who are...