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Title:Panic on the streets of London: police, crime and the july 2005 terror attacks PDF Logo
Authors:Draca, Mirko
Machin, Stephen
Witt, Robert
Issue Date:2008
Series/Report no.:IZA Discussion Papers 3410
Abstract:In this paper we study the causal impact of police on crime by looking at what happened to crime before and after the terror attacks that hit central London in July 2005. The attacks resulted in a large redeployment of police officers to central London boroughs as compared to outer London - in fact, police deployment in central London increased by over 30 percent in the six weeks following the July 7 bombings. During this time crime fell significantly in central relative to outer London. Study of the timing of the crime reductions and their magnitude, the types of crime which were more likely to be affected and a series of robustness tests looking at possible biases all make us confident that our research approach identifies a causal impact of police on crime. Implementing an instrumental variable approach shows an elasticity of crime with respect to police of approximately -0.3, so that a 10 percent increase in police activity reduces crime by around 3 percent.
Subjects:Crime
police : terror attacks
JEL:H00
Persistent Identifier of the first edition:urn:nbn:de:101:1-20080320126
Document Type:Working Paper
Appears in Collections:IZA Discussion Papers, Forschungsinstitut zur Zukunft der Arbeit (IZA)

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