The Peter Principle states that, after a promotion, the observed output of promotedemployees tends to fall. Lazear (2004) models this principle as resulting from a regression tothe mean of the transitory component of ability...

The "common effect" model in program evaluation assumes that all treated individuals have the same impact from a program. Our paper contributes to the recent literature that tests and goes beyond the common effect model by investigating impact heterogeneity using data from the experimental...

In many environments, tournaments can elicit more effort from workers, except perhapswhen workers can sabotage each other. Because it is hard to separate effort, ability andoutput in many real workplace settings, the empirical evidence on the incentive effect oftournaments is thin...

Small and informal firms account for a large share of employment in developing countries.The rapid expansion of microfinance services is based on the belief that these firms haveproductive investment opportunities and can enjoy high returns to capital if given theopportunity...