Event dependence in U.S. executions
Public Deposited- Creator
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Baumgartner, Frank R.
- Affiliation: College of Arts and Sciences, Department of Political Science
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Box-Steffensmeier, Janet M.
- Other Affiliation: Department of Political Science; Ohio State University
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Campbell, Benjamin W.
- Other Affiliation: Department of Political Science; Ohio State University
- Abstract
- Since 1976, the United States has seen over 1,400 judicial executions, and these have been highly concentrated in only a few states and counties. The number of executions across counties appears to fit a stretched distribution. These distributions are typically reflective of self-reinforcing processes where the probability of observing an event increases for each previous event. To examine these processes, we employ two-pronged empirical strategy. First, we utilize bootstrapped Kolmogorov-Smirnov tests to determine whether the pattern of executions reflect a stretched distribution, and confirm that they do. Second, we test for event-dependence using the Conditional Frailty Model. Our tests estimate the monthly hazard of an execution in a given county, accounting for the number of previous executions, homicides, poverty, and population demographics. Controlling for other factors, we find that the number of prior executions in a county increases the probability of the next execution and accelerates its timing. Once a jurisdiction goes down a given path, the path becomes self-reinforcing, causing the counties to separate out into those never executing (the vast majority of counties) and those which use the punishment frequently. This finding is of great legal and normative concern, and ultimately, may not be consistent with the equal protection clause of the U.S. Constitution.
- Date of publication
- 2018
- Keyword
- DOI
- Identifier
- PMID: 29293583
- Onescience id: 8e5470f3a7e2531fbd6d535eda3ec2a54f298581
- Publisher DOI: https://doi.org/10.1371/journal.pone.0190244
- PMCID: PMC5749737
- Resource type
- Article
- Rights statement
- In Copyright
- Journal title
- PloS One
- Journal volume
- 13
- Journal issue
- 1
- Page start
- e0190244
- Language
- English
- ISSN
- 1932-6203
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