Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Most doctors in the National Resident Matching Program (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 that the patterns in the NRMP data may be an artifact of the interview process that precedes the match. Our study highlights the importance of understanding market interactions occurring before and after a matching clearinghouse. It casts doubts on analyses of clearinghouses that take reported preferences at face value.