We experimentally study the Gale and Shapley, 1962 mechanism, which is utilized in a wide set of applications, most prominently the National Resident Matching Program (NRMP). Several insights come out of our analysis. First, only 48% of our observed outcomes are stable, and among those a large...

We experimentally study the Gale and Shapley (1962) mechanism, which is utilized in a wide set of applications, most prominently the National Resident Match- ing Program (NRMP). Several insights come out of our analysis. First, only 48% of our observed outcomes are stable, and among those a...

Most doctors in the NRMP match with one of their most-preferred internship programs. However, surveys indicate doctors’ preferences are similar, suggesting a puzzle: how can so many doctors match with their top choices when positions are scarce? We provide one possible explanation. We show...