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Criminal Law

All Faculty Scholarship

2010

Bias

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Do Judges Vary In Their Treatment Of Race?, David S. Abrams, Marianne Bertrand, Sendhil Mullainathan Sep 2010

Do Judges Vary In Their Treatment Of Race?, David S. Abrams, Marianne Bertrand, Sendhil Mullainathan

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Are minorities treated differently by the legal system? Systematic racial differences in case characteristics, many unobservable, make this a difficult question to answer directly. In this paper, we estimate whether judges differ from each other in how they sentence minorities, avoiding potential bias from unobservable case characteristics by exploiting the random assignment of cases to judges. We measure the between-judge variation in the difference in incarceration rates and sentence lengths between African-American and White defendants. We perform a Monte Carlo simulation in order to explicitly construct the appropriate counterfactual, where race does not influence judicial sentencing. In our data set, …