Do retirement savings policies--such as tax subsidies or employer-provided pension plans--increase total saving for retirement or simply induce shifting across accounts? We revisit this classic question using 45 million observations on wealth for the population of Denmark. We find that a...

In Project STAR, 11,571 students in Tennessee and their teachers were randomly assigned to classrooms within their schools from kindergarten to third grade. This article evaluates the long-term impacts of STAR by linking the experimental data to administrative records. We first demonstrate that...