More Guns, More Crime Author(s): Mark Duggan Source: Journal of Political Economy, Vol. 109, No. 5 (October 2001), pp. 1086-1114 Published by: The University of Chicago Press Stable URL: http://www.jstor.org/stable/10.1086/322833 Accessed: 03-04-2018 19:37 UTC JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
[email protected]. Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at http://about.jstor.org/terms The University of Chicago Press is collaborating with JSTOR to digitize, preserve and extend access to Journal of Political Economy This content downloaded from 153.90.149.52 on Tue, 03 Apr 2018 19:37:56 UTC All use subject to http://about.jstor.org/terms More Guns, More Crime Mark Duggan University of Chicago and National Bureau of Economic Research This paper examines the relationship between gun ownership and crime. Previous research has suffered from a lack of reliable data on gun ownership. I exploit a unique data set to reliably estimate annual rates of gun ownership at both the state and the county levels during the past two decades. My findings demonstrate that changes in gun ownership are significantly positively related to changes in the hom- icide rate, with this relationship driven almost entirely by an impact of gun ownership on murders in which a gun is used.