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Empirical analysis

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Spillover Effects In Police Use Of Force, Justin E. Holz, Roman G. Rivera, Bocar A. Ba Dec 2019

Spillover Effects In Police Use Of Force, Justin E. Holz, Roman G. Rivera, Bocar A. Ba

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We study the link between officer injuries-on-duty and the force-use of their peers using a network of officers who, through a random lottery, began the police academy together. We find that peer injuries-on-duty increase the probability of using force by 7%. The effect is concentrated in a narrow time window near the event and is not associated with significantly lower injury risk to the officer. Complaints of improper searches and failure to provide service also increase after peer injuries, suggesting that the increase in force might be driven by heightened risk aversion.


In-Group Bias And The Police: Evidence From Award Nominations, Nayoung Rim, Roman G. Rivera, Bocar A. Ba Oct 2019

In-Group Bias And The Police: Evidence From Award Nominations, Nayoung Rim, Roman G. Rivera, Bocar A. Ba

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This paper examines the impact of in-group bias on the internal dynamics of a police department. Prior studies have documented racial bias in policing, but little is known about bias against officers due to lack of available data. We construct a novel panel dataset of Chicago Police Department officers, with detailed information on officer characteristics and work productivity. Exploiting quasi-random variation in supervisor assignment, we find that white supervisors are less likely to nominate black officers than white or Hispanic officers. We find weaker evidence that male supervisors are less likely to nominate female officers than male officers. We explore …


Death And Harmless Error: A Rhetorical Response To Judging Innocence, Colin Starger Feb 2008

Death And Harmless Error: A Rhetorical Response To Judging Innocence, Colin Starger

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Professor Garrett’s impressive empirical analysis of the first 200 post conviction DNA exonerations in the United States (“Garrett Study”) has the potential to affect contemporary debates surrounding our nation’s criminal justice system. This Response explores this potential by harnessing the Study’s data in support of arguments for and against a contested doctrinal proposition — that guilt-based harmless error rules should never apply in death penalty appeals. My analysis starts with the premise that the Study’s real world impact will necessarily depend on how jurists, politicians, and scholars extrapolate the explanatory power of the data beyond the 200 cases themselves. While …