Law Commons^™

Do Case Outcomes Really Reveal Anything About The Legal System? Win Rates And Removal Jurisdiction, Kevin M. Clermont, Theodore Eisenberg

Cornell Law Faculty Publications

General Observations on Interpreting Win-Rate Data Properly. Many empirical legal studies use data on plaintiffs' rate of success, because of those data's ready availability and apparent import. Yet these "win rates" are probably the slipperiest of all judicial data. Win rates are inherently ambiguous because of the case-selection effect. The litigants' selection of the cases brought produces a biased sample from the mass of underlying disputes. The settlement process, usually conducted by rational and knowledgeable persons who take into account and thereby neutralize the very factor that one would like to study, produces a residue of litigated cases for which …