Previous empirical specifications are not flexible enough to capture the true pattern of sheepskin effects over time. If the quality of the match between the worker and the job contributes to earnings and if higher ability workers more easily reveal their true productivity, sheepskin effects...

Previous empirical specifications are not flexible enough to capture the true pattern of sheepskin effects over time. If the quality of the match between the worker and the job contributes to earnings and if higher ability workers more easily reveal their true productivity, sheepskin effects...