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 …

Exposing Police Misconduct In Pre-Trial Criminal Proceedings, Anjelica Hendricks

All Faculty Scholarship

This Article presents a unique argument: police misconduct records should be accessible and applicable for pre-trial criminal proceedings. Unfortunately, the existing narrative on the value of police misconduct records is narrow because it exclusively considers how these records can be used to impeach officer credibility at trial. This focus is limiting for several reasons. First, it addresses too few defendants, since fewer than 3% of criminal cases make it to trial. Second, it overlooks misconduct records not directly addressing credibility—such as records demonstrating paperwork deficiencies, failures to appear in court, and “mistakes” that upon examination are patterns of abuse. Finally, …