This paper ranks Dutch economists using information about publications and citations. Rankings involve the aggregation of several performance dimensions. Instead of using a cardinal approach, where each dimension is weighted based on impact factors of journals for example, we use an ordinal...

If contract enforcers must be randomly selected from the same population and thus are as opportunistic as ordinary traders could a system of adjudication nevertheless increase the degree to which contractual obligations on large anonymous markets are fulfilled? Adopting an indirect evolutionary...

Abstract: When it comes to economic reforms in developing countries, many economists agree on broad objectives (such as fostering outward orientation). Broad objectives, however, can be pursued in many di¤erent ways, and policy experimentation is often indispensable for learning which...

Abstract: We study the effects of improvements in eBay’s rating mechanism on seller exit and continuing sellers’ behavior. Following a large sample of sellers over time, we exploit the fact that the rating mechanism was changed to reduce strategic bias in buyer rating. That improvement did...

A sophisticated player is an individual who takes the action of the opponents, in a strategic situation, as determined by decision of rational opponents, and acts accordingly. A sophisticated agent is rational in the choice of his action, but ignores the fact that he is part of a strategic...

Behavioral economics provides several motivations for the common observation that agents appear somewhat unwilling to deviate from recent choices.More recent choices can be more salient than other choices, or more readily available in the agent's mind.Alternatively, agents may have formed...

This paper considers the financing of a research project under uncertainty about the time of completion and the probability of eventual success.The uncertainty about future success gradually diminishes with the arrival of additional funding.The entrepreneur controls the funds and can divert...

This paper models the effect of a HIV/AIDS epidemic on saving behavior and studies the welfare effects of testing for HIV. The model specifies a utility function that includes both regular consumption, and medical expenditures. Medical expenditures generate more utility if individuals are HIV...