Like other states, minorities are disproportionately represented in the California's state prison system, particularly for drug offenses. Unlike other states, California has had a policy of mandatory diversion to drug treatment for non-violent drug offenders since mid-2001 (Proposition 36)....

Municipal governments commonly confront the problem of tardy or delinquent property tax payments. We implement an experiment in property tax collection for tardy taxpayers in the City of Philadelphia for the calendar year, 2015. The experiment sent one of seven reminder letters to the tardy...

Given the central role of private individuals and firms in determining the effectiveness of the criminal justice system, and the quality and availability of criminal opportunities, private actions arguably deserve a central role in the analysis of crime and crime prevention policy. But the...