for finding groups of data points is presented. The problem of identifying leverage groups is addressed, and a heuristic … algorithm for identifying both leverage points and leverage groups is proposed. Semi-portable FORTRAN code implementing the …

field experiment, we document meaningful improvements in teacher job performance when high- and low-performing teachers … are asked to focus on specific skills identified in the low-performer's prior performance evaluations. In the classrooms … control classrooms. These improvements in teacher performance persisted, and perhaps grew, in the year after treatment …

, performance of players on national teams in the year just before and the year just after they join an elite club team, and … explain differences in the rate of human capital accumulation on the job. Data tracking national soccer team performance and … individual has been a member of an elite team than when he has been a member of lower level teams. The conclusion is borne out by …

identifying individual contributions to group performance. We randomly assign people to multiple teams and predict team … performance. We call these individuals “team players”. Team players score significantly higher on a well-established measure of … – improve group performance about as much as IQ. We find suggestive evidence that team players increase effort among teammates …

performance of black students. This can bias many secondary analyses. Other assessments use different measurement models. This …Economists often use test scores to measure a student's performance or an adult's human capital. These scores reflect …

absent worker, the extent to which the worker functions as part of a team, and the time sensitivity of the worker's output …

long director tenure can exacerbate deadlock. Moreover, we rationalize why CEOs and incumbent directors have power to …

Incentive schemes that reward participants based on their relative performance are often thought to be particularly …-taking strategies. However, decision-makers take more risk when they see the gaps between their performance score and their peers …’ scores grow. Combined feedback about peers’ strategies and performance—from which subjects may assess the overall …