摘要:We study the effect of providing relative performance feedback information on
performance under piece-rate incentives. A natural experiment that took place in
a high school offers an unusual opportunity to test this effect in a real-effort
setting. For one year only, students received information that allowed them to
know whether they were above (below) the class average as well as the distance
from this average. We exploit a rich panel data set and find that the provision
of this information led to an increase of 5% in students’ grades. Moreover, the
effect was significant for the whole distribution. However, once the information
was removed the effect disappeared. To rule out the concern that the effect may
be driven by teachers within the school, we verify our results using national
level exams (externally graded) for the same students, and the effect remains.