This paper analyzes the effect of an accountability system in the Brazilian college market. For each discipline, colleges were assigned a grade that depended on the scores of their students on the ENC, an annual mandatory ...

This paper introduces a model economy in which formation of coalition groups under technological progress is generated endogenously. The coalition formation depends crucially on the rate of arrival of new technologies. In ...

It is often suggested that competition improves productivity, however, the underlying support for this idea is surprisingly thin. This paper presents a case study examining the e ects of a change in the competitive environment ...