Abstract

http://ssrn.com/abstract=1819503
 


 



Estimating the Deterrent Effect of Incarceration Using Sentencing Enhancements


David Abrams


University of Pennsylvania Law School

January 2011

U of Penn, Inst for Law & Econ Research Paper No. 11-13

Abstract:     
Increasing criminal sanctions may reduce crime through two primary mechanisms: deterrence and incapacitation. Disentangling their effects is crucial, since each mechanism has different implications for optimal policy setting. I use the introduction of state add-on gun laws, which enhance sentences for defendants possessing a firearm during the commission of a felony, to isolate the deterrent effect of incarceration. Defendants subject to add-ons would be incarcerated in the absence of the law change, so any short-term impact on crime can be attributed solely to deterrence. Using cross-state variation in the timing of law passage dates, I find that the average add-on gun law results in a roughly 5 percent decline in gun robberies within the first three years. This result is robust to a number of specification tests and does not appear to be associated with large spillovers to other types of crime.

Number of Pages in PDF File: 57

Keywords: Punishment, mandatory minimum sentencing, incarceration, sentence length, enhancement, armed robbery, use of a gun in the commission of a crime, general deterrence, empirical research, forecasting and simulation, ascertaining disparities in criminal behavior, add-ons, add-on gun laws

JEL Classification: C79, J24, K14, K42

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Date posted: May 4, 2011  

Suggested Citation

Abrams, David, Estimating the Deterrent Effect of Incarceration Using Sentencing Enhancements (January 2011). U of Penn, Inst for Law & Econ Research Paper No. 11-13. Available at SSRN: http://ssrn.com/abstract=1819503 or http://dx.doi.org/10.2139/ssrn.1819503

Contact Information

David S. Abrams (Contact Author)
University of Pennsylvania Law School ( email )
3501 Sansom Street
Philadelphia, PA 19104
United States
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