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Statistical Variability and the Deterrent Effect of the Death Penalty

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  • Paul R. Zimmerman

Abstract

In a recent paper Donohue and Wolfers (D&W) critique a number of modern econometric studies purporting to demonstrate a deterrent effect of capital punishment. This paper focuses on D&W's central criticism of a study by Zimmerman; specifically, that the estimated standard errors on the subset of his regressions that suggest a deterrent effect are downward biased due to autocorrelation. The method that D&W rely upon to adjust Zimmerman's standard errors is, however, potentially problematic, and is also only one of several methods to address the presence of autocorrelation. To this end, Zimmerman's original models are subjected to several parametric corrections for autocorrelation, all of which result in statistically significant estimates that are of the same magnitude to his original estimates. The paper also presents results obtained from an alternative model whose specification is motivated on theoretical and statistical grounds. These latter results also provide some evidence supporting a deterrent effect. Finally, the paper discusses D&W's use of randomization testing and their contention that executions are not carried out often enough to plausibly deter murders. Copyright 2009, Oxford University Press.

Suggested Citation

  • Paul R. Zimmerman, 2009. "Statistical Variability and the Deterrent Effect of the Death Penalty," American Law and Economics Review, Oxford University Press, vol. 11(2), pages 370-398.
  • Handle: RePEc:oup:amlawe:v:11:y:2009:i:2:p:370-398
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    File URL: http://hdl.handle.net/10.1093/aler/ahp003
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    Cited by:

    1. Gebhard Kirchgässner, 2011. "Econometric Estimates of Deterrence of the Death Penalty: Facts or Ideology?," Kyklos, Wiley Blackwell, vol. 64(3), pages 448-478, August.
    2. Berit C. Gerritzen & Gebhard Kirchgässner, 2013. "Facts or Ideology: What Determines the Results of Econometric Estimates of the Deterrence Effect of Death Penalty? A Meta-Analysis," CESifo Working Paper Series 4159, CESifo Group Munich.
    3. Joseph A. Clougherty & Jo Seldeslachts, 2013. "The Deterrence Effects of US Merger Policy Instruments," Journal of Law, Economics, and Organization, Oxford University Press, vol. 29(5), pages 1114-1144, October.
    4. Berit C. Gerritzen & Gebhard Kirchgässner, 2013. "Facts or Ideology: What Determines the Results of Econometric Estimates of the Deterrence Effect of Death Penalty?," CREMA Working Paper Series 2013-04, Center for Research in Economics, Management and the Arts (CREMA).
    5. Vincent Aidan O'Sullivan, 2018. "Hanging Down Under: Capital Punishment and Deterrence in Australia," Working Papers 228680000, Lancaster University Management School, Economics Department.

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