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Police Patrols and Crime

Author

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  • Jordi Blanes I Vidal
  • Giovanni Mastrobuoni
Abstract
An influential literature has used the aftermath of terrorist attacks to estimate large effects of police street deployment on crime. However, the elasticities obtained in these settings may not easily extrapolate to more standard circumstances. This paper exploits a natural experiment that aimed to increase police presence in more than 6,000 well-defined areas, by economically-realistic amounts and under relatively normal circumstances. Using data transmitted by GPS devices worn by police officers, we first document exogenous and discontinuous changes in patrolling intensity. We do not find that these increases in patrolling were accompanied by corresponding decreases in crime. The standard errors are small enough to reject relatively small elasticities. We discuss and empirically evaluate explanations for our findings.

Suggested Citation

  • Jordi Blanes I Vidal & Giovanni Mastrobuoni, 2018. "Police Patrols and Crime," Carlo Alberto Notebooks 551, Collegio Carlo Alberto.
    • Handle: RePEc:cca:wpaper:551
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    References listed on IDEAS

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    1. Mirko Draca & Stephen Machin & Robert Witt, 2011. "Panic on the Streets of London: Police, Crime, and the July 2005 Terror Attacks," American Economic Review, American Economic Association, vol. 101(5), pages 2157-2181, August.
    2. Gary S. Becker, 1974. "Crime and Punishment: An Economic Approach," NBER Chapters, in: Essays in the Economics of Crime and Punishment, pages 1-54, National Bureau of Economic Research, Inc.
    3. Mastrobuoni, Giovanni, 2019. "Police disruption and performance: Evidence from recurrent redeployments within a city," Journal of Public Economics, Elsevier, vol. 176(C), pages 18-31.
    4. Mastrobuoni, Giovanni, 2015. "Police Disruption and Performance: Evidence from Recurrent Redeployments within a City," IZA Discussion Papers 8799, Institute for the Study of Labor (IZA).
    5. Paul Heaton & Priscillia Hunt & John MacDonald & Jessica Saunders, 2016. "The Short- and Long-Run Effects of Private Law Enforcement: Evidence from University Police," Journal of Law and Economics, University of Chicago Press, vol. 59(4), pages 889-912.
    6. Levitt, Steven D, 1997. "Using Electoral Cycles in Police Hiring to Estimate the Effect of Police on Crime," American Economic Review, American Economic Association, vol. 87(3), pages 270-290, June.
    7. Klick, Jonathan & Tabarrok, Alexander, 2005. "Using Terror Alert Levels to Estimate the Effect of Police on Crime," Journal of Law and Economics, University of Chicago Press, vol. 48(1), pages 267-279, April.
    8. John M. MacDonald & Jonathan Klick & Ben Grunwald, 2016. "The effect of private police on crime: evidence from a geographic regression discontinuity design," Journal of the Royal Statistical Society Series A, Royal Statistical Society, vol. 179(3), pages 831-846, June.
    9. Levitt, Steven D, 1998. "Why Do Increased Arrest Rates Appear to Reduce Crime: Deterrence, Incapacitation, or Measurement Error?," Economic Inquiry, Western Economic Association International, vol. 36(3), pages 353-372, July.
    10. Larson, Richard C., 1975. "What happened to patrol operations in Kansas city? A review of the Kansas city preventive patrol experiment," Journal of Criminal Justice, Elsevier, vol. 3(4), pages 267-297.
    11. Aaron Chalfin & Justin McCrary, 2017. "Criminal Deterrence: A Review of the Literature," Journal of Economic Literature, American Economic Association, vol. 55(1), pages 5-48, March.
    12. Rafael Di Tella & Ernesto Schargrodsky, 2004. "Do Police Reduce Crime? Estimates Using the Allocation of Police Forces After a Terrorist Attack," American Economic Review, American Economic Association, vol. 94(1), pages 115-133, March.
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    Cited by:

    1. Anna Bindler & Randi Hjalmarsson, 2021. "The Impact of the First Professional Police Forces on Crime [State Capacity and Economic Development: A Network Approach]," Journal of the European Economic Association, European Economic Association, vol. 19(6), pages 3063-3103.
    2. Cabrera, José María & Cid, Alejandro & Veneri, Federico, 2022. "Hot Spots, Patrolling Intensity, and Robberies: Lessons from a three-year program in Uruguay," MPRA Paper 113786, University Library of Munich, Germany.
    3. Rosario Crinó & Giovanni Immordino & Salvatore Piccolo, 2021. "Criminal mobility, fugitives, and extradition rules," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 23(1), pages 69-104, February.
    4. Rosario Crinò & Giovanni Immordino & Salvatore Piccolo, 2018. "Fighting Mobile Crime," DISCE - Working Papers del Dipartimento di Economia e Finanza def071, Università Cattolica del Sacro Cuore, Dipartimenti e Istituti di Scienze Economiche (DISCE).
    5. Blesse, Sebastian & Diegmann, André, 2022. "The place-based effects of police stations on crime: Evidence from station closures," Journal of Public Economics, Elsevier, vol. 207(C).
    6. Blesse, Sebastian & Diegmann, André, 2019. "Police reorganization and crime: Evidence from police station closures," Working Papers 07/2019, German Council of Economic Experts / Sachverständigenrat zur Begutachtung der gesamtwirtschaftlichen Entwicklung.
    7. Vikram Maheshri & Giovanni Mastrobuoni, 2018. "Do Security Measures Displace Crime? Theory and Evidence from Italian Bank Robberies," Carlo Alberto Notebooks 579, Collegio Carlo Alberto.

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    More about this item

    Keywords

    Police; Crime; Natural Experiments; Deterrence.;
    All these keywords.

    JEL classification:

    • D29 - Microeconomics - - Production and Organizations - - - Other
    • K40 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - General

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