Does Capital Punishment Have a Deterrent Effect? New Evidence from Postmoratorium Panel Data

Hashem Dezhbakhsh, Paul Rubin and Joanna M. Shepherd

American Law and Economics Review, 2003, vol. 5, issue 2, 344-376

Abstract: Evidence on the deterrent effect of capital punishment is important for many states that are currently reconsidering their position on the issue. We examine the deterrent hypothesis by using county-level, postmoratorium panel data and a system of simultaneous equations. The procedure we employ overcomes common aggregation problems, eliminates the bias arising from unobserved heterogeneity, and provides evidence relevant for current conditions. Our results suggest that capital punishment has a strong deterrent effect; each execution results, on average, in eighteen fewer murders--with a margin of error of plus or minus ten. Tests show that results are not driven by tougher sentencing laws and are robust to many alternative specifications. Copyright 2003, Oxford University Press.

Date: 2003
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