Is Police Behavior Getting Worse? The Importance of Data Selection in Evaluating the Police

52 Pages Posted: 31 Jan 2019 Last revised: 20 May 2019

See all articles by Aurelie Ouss

Aurelie Ouss

University of Pennsylvania

John Rappaport

University of Chicago - Law School

Date Written: January 28, 2019


Public concern about harmful policing is surging. Governments are paying historic amounts for law enforcement liability. Has police behavior changed? Or is society responding differently? Traditional data sources struggle with this question. Common metrics such as lawsuits and payouts conflate the prevalence and severity of policing harms with the responses of legal actors such as lawyers, judges, and juries. We overcome this problem using a new data source: liability insurance claims. Our dataset contains 23 years of claims against roughly 350 law enforcement agencies that contract with a single insurer. We find that while lawsuits and payouts have trended upwards over the past decade, insurance claims have declined. We generate and test multiple explanatory hypotheses. We conclude that, in our sample, police behavior is not getting worse; rather, public responses to policing harms are intensifying. Data selection, our analysis shows, strongly influences results in policing research.

Keywords: Police, police misconduct, copwatching, insurance, municipal liability, civil rights

JEL Classification: K14

Suggested Citation

Ouss, Aurelie and Rappaport, John, Is Police Behavior Getting Worse? The Importance of Data Selection in Evaluating the Police (January 28, 2019). University of Chicago Coase-Sandor Institute for Law & Economics Research Paper No. 865; U of Chicago, Public Law Working Paper No. 693. Available at SSRN: or

Aurelie Ouss

University of Pennsylvania ( email )

Philadelphia, PA 19104
United States

John Rappaport (Contact Author)

University of Chicago - Law School ( email )

1111 E. 60th St.
Chicago, IL 60637
United States
773-834-7194 (Phone)
773-702-0730 (Fax)


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