The Causes of Growth in Prison Admissions and Populations
John F. Pfaff
Fordham University School of Law
July 12, 2011
The explosive growth in the US prison population is well documented, but its causes are poorly understood. In this paper I exploit previously-unused data to define precisely where the growth is occurring. In short, the growth in prison populations has been driven almost entirely by increases in felony filings per arrest. All other possible sites of growth — arrests, admissions per filing, convictions per filings and admissions per conviction, and even (perhaps most surprisingly) time served per admission — have barely changed over the past four decades. But the growth in filings tracks that of admissions almost perfectly. This paper demonstrates the importance of felony filings and considers some of the possible explanations for their growth.
Number of Pages in PDF File: 46
Keywords: Prisons, Crime, Incarceration, Prosecutors
JEL Classification: K14, K42
Date posted: July 15, 2011 ; Last revised: November 28, 2011
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