Using Terror Alert Levels to Estimate the Effect of Police on Crime
AbstractChanges in the terror alert level set by the Department of Homeland Security provide a shock to police presence in Washington, D.C. Using daily crime data during the period the terror alert system has been in place, we show that the level of crime decreases significantly, both statistically and economically, during high-alert periods. The decrease in the level of crime is especially large in the National Mall. This provides strong evidence of the causal effect of police on the level of crime and suggests a research strategy that can be used in other cities.
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Bibliographic InfoArticle provided by University of Chicago Press in its journal Journal of Law and Economics.
Volume (Year): 48 (2005)
Issue (Month): 1 (April)
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Web page: http://www.journals.uchicago.edu/JLE/
Other versions of this item:
- Jonathan Klick & Alexander Tabarrok, . "Using Terror Alert Levels to Estimate the Effect of Police on Crime," American Law & Economics Association Annual Meetings 1042, American Law & Economics Association.
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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