We argue that the key impediment to accurate measurement of the effect of police on crime is not necessarily simultaneity bias, but bias due to mismeasurement of police. Using a new panel data set on crime in medium to large U.S. cities over 1960- 2010, we obtain measurement error corrected...

This document contains supporting materials for the article "How Rigged Are Stock Markets? Evidence from Microsecond Timestamps" by Robert P. Bartlett, III and Justin McCrary.The paper to which this Appendix applies is available at the following URL: "https://ssrn.com/abstract=2812123"...

Copyright provides a long term of legal excludability, ostensibly to encourage the production of new creative works. How long this term should last, and the extent to which current law aligns with the economic incentives of copyright owners, has been the subject of vigorous theoretical debate....

Forward-looking behavior on the part of the monetary authority leads least squares estimates to understate the true growth consequences of monetary policy interventions. We present instrumental variables estimates of the impact of interest rates on real output growth for several European...

Standard sufficient conditions for identification in the regression discontinuity design are continuity of the conditional expectation of counterfactual outcomes in the running variable. These continuity assumptions may not be plausible if agents are able to manipulate the running variable. This...

An estimated one in three American adults has a criminal record. While some records are for serious offenses, most are for arrests or relatively low-level misdemeanors. In an era of heightened security concerns, easily available data and increased criminal background checks, these records act as...

For well over a century, legislators, courts, lawyers, and scholars have spent significant time and energy debating the optimal duration of copyright protection. While there is general consensus that copyright's term is of legal and economic significance, arguments both for and against a lengthy...

Arguably the most aggressive affirmative action program ever implemented in the United States was a series of court-ordered racial hiring quotas imposed on municipal police departments. My best estimate of the effect of court-ordered affirmative action on workforce composition is a 14 percentage...

This paper uses age-at-school-entry policies to identify the effect of female education on fertility and infant health. We focus on sharp contrasts in schooling, fertility, and infant health between women born just before and after the school entry date. School entry policies affect female...

Currently available asymptotic results in the literature suggest that matching estimators have higher variance than reweighting estimators. The extant literature comparing the finite sample properties of matching to specific reweighting estimators, however, has concluded that reweighting...