ABSTRACT We document that central banks are discontinuously more likely to report slightly positive profits than slightly negative profits, especially when political pressure is greater, the public is more receptive to extreme political views, and central bank governors are eligible for reappointment. The propensity to report small profits over small losses is correlated with higher inflation and lower interest rates. We conclude that there are agency problems at central banks, which give rise to discontinuous profit incentives that correlate with central banks’ policy choices and outcomes. These findings inform the debate about the political economy of central banking and central bank design.

ABSTRACT After a natural experiment is first used, other researchers often reuse the setting, examining different outcome variables. We use simulations based on real data to illustrate the multiple hypothesis testing problem that arises when researchers reuse natural experiments. We then provide guidance for future inference based on popular empirical settings including difference‐in‐differences, instrumental variables, and regression discontinuity designs. When we apply our guidance to two extensively studied natural experiments, business combination laws and the Regulation SHO pilot, we find that many results that were statistically significant using single hypothesis testing do not survive corrections for multiple hypothesis testing.