Law Commons^™

Power And Statistical Significance In Securities Fraud Litigation, Jill E. Fisch, Jonah B. Gelbach

All Faculty Scholarship

Event studies, a half-century-old approach to measuring the effect of events on stock prices, are now ubiquitous in securities fraud litigation. In determining whether the event study demonstrates a price effect, expert witnesses typically base their conclusion on whether the results are statistically significant at the 95% confidence level, a threshold that is drawn from the academic literature. As a positive matter, this represents a disconnect with legal standards of proof. As a normative matter, it may reduce enforcement of fraud claims because litigation event studies typically involve quite low statistical power even for large-scale frauds.

This paper, written for …

Pretrial Detention And Bail, Megan Stevenson, Sandra G. Mayson

All Faculty Scholarship

Our current pretrial system imposes high costs on both the people who are detained pretrial and the taxpayers who foot the bill. These costs have prompted a surge of bail reform around the country. Reformers seek to reduce pretrial detention rates, as well as racial and socioeconomic disparities in the pretrial system, while simultaneously improving appearance rates and reducing pretrial crime. The current state of pretrial practice suggests that there is ample room for improvement. Bail hearings are often cursory, with no defense counsel present. Money-bail practices lead to high rates of detention even among misdemeanor defendants and those who …

Putting The Trial Penalty On Trial, David S. Abrams

All Faculty Scholarship

The "trial penalty" is a concept widely accepted by all the major actors in the criminal justice system: defendants, prosecutors, defense attorneys, court employees, and judges. The notion is that defendants receive longer sentences at trial than they would have through plea bargain, often substantially longer. The concept is intuitive: longer sentences are necessary in order to induce settlements and without a high settlement rate it would be impossible for courts as currently structured to sustain their immense caseload. While intuitively appealing, this view of the trial penalty is completely at odds with economic prediction. Since both prosecutors and defendants …

Docketology, District Courts And Doctrine, David A. Hoffman, Alan J. Izenman, Jeffrey Lidicker

All Faculty Scholarship

Empirical legal scholars have traditionally modeled trial court judicial opinion writing by assuming that judges act rationally, seeking to maximize their influence by writing opinions in politically important cases. Support for this hypothesis has reviewed published trial court opinions, finding that civil rights and other "hot" topics are more likely to be explained than purportedly ordinary legal problems involved in resolving social security and commercial law cases. This orthodoxy comforts consumers of legal opinions, because it suggests that they are largely representative of judicial work. To test such views, we collected data from a thousand cases in four different jurisdictions. …