We use a natural experiment to show that the presence of an external examiner has both a direct and an indirect negative effect on the performance of monitored classes in standardized educational tests. The direct effect is the difference in the test performance between classes of the same...

Entrepreneurs are believed to be the ultimate engine of modern economic systems. Yet, the study ofentrepreneurship suffers from the lack of consensus on the most crucial question: what makes anentrepreneur? A recent theory developed by Edward Lazear suggests that individuals mastering abalanced...