The Truckers and Turnover Project is a statistical case study of a single firm and its employees which matches proprietary personnel and operational data to new data collected by the researchers to create a two-year panel study of a large subset of new hires. The project's most distinctive...

We examined the persistence of teacher effects from grade to grade on lower-performing students using high-quality experimental data from Project STAR, where students and teachers were assigned randomly to classrooms of different sizes. The data included information about mathematics and reading...

We extend the analysis of early-emerging gender differences in academic achievement to include both (objective) test scores and (subjective) teacher assessments. Using data from the 1998-99 ECLS-K cohort, we show that the grades awarded by teachers are not aligned with test scores, with the...

In contemporary America, racial gaps in achievement are primarily due to gaps in skills. Skill gaps emerge early before children enter school. Families are major producers of those skills. Inequality in performance in school is strongly linked to inequality in family environments. Schools do...

How valuable are cognitive and social abilities for entrepreneurs' incomes as compared to employees? We answer three questions: (1) To what extent does a composite measure of ability affect an entrepreneur's earnings relative to employees? (2) Do different cognitive abilities (e.g. math ability,...

This paper replicates studies by Medoff and Abraham (1980, 1981) and Flabbi and Ichino (2001) using personnel data from the Dutch national aircraft manufacturer Fokker. It shows how a formal salary system, as is widely used by large firms, brings about that seniority-wage profiles are largely...

The quality of subjective performance evaluation is dependent on the incentive structures faced by evaluators, in particular on how they are monitored and themselves evaluated. Figure skating competitions provide a unique opportunity to study subjective evaluation. This paper develops and tests...

We describe the statistical model used for profiling new unemployed workers in Denmark. When a worker – during his or her first six months in unemployment – enters the employment office for the first time, this model predicts whether he or she will be unemployed for more than six months from...

This paper studies how schooling admission tests affect economic performance in an economy where individuals are endowed with both academic and non academic abilities and both abilities matter for labor productivity. We develop a simple model with selective government held schools, where...

When designing incentives for a manager, the trade-off between insurance and a good allocation of effort across various tasks is often identified with a trade-off between the responsiveness (sensitivity, precision, signal-noise ratio) of the performance measure and its similarity (congruity,...