September 29, 2009
Cheng & Yoon on "Predicting the Constitutionality of Punitive Damages"
Edward Cheng (Brooklyn) and Albert Yoon (Toronto) have posted their recent article, "Predicting the Constitutionality of Punitive Damages: A Statistical Approach." The abstract provides:
The constitutional doctrine governing punitive damages captivates legal scholars and jurists in part because it is both complex and evolving. The unpredictability, however, presents difficulties for attorneys and their clients, who need greater certainty to make practical decisions about litigation and settlement. In this Essay, we offer a statistical approach for predicting court decisions on the constitutionality of punitives. As it turns out, basic logisitic regression methods with appropriate model selection can be quite effective, although we make further gains using a Bayesian hierarchical approach. Using a new dataset of cases challenging punitive damage constitutionality from 1989 to 2008, our hierarchical model can predict out-of-sample outcomes with 76-85 percent accuracy. These results suggest that while constitutionality may not be subject to a deterministic formula, it can be effectively modeled statistically. Beyond the punitive damages context, our work additionally offers a glimpse of the potential of statistical models for predicting a wide variety of legal questions.
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