Evidence Commons^™

Prosecutors, Ethics, And Expert Witnesses, Paul C. Giannelli, Kevin C. Mcmunigal

Faculty Publications

Commentators who have examined the DNA exonerations have noted the disturbing role that prosecutors have played in these wrongful convictions. Another significant contributor to these miscarriages of justice is the misuse of expert testimony, a third of the cases according to some sources. This Article examines the intersection of these two factors - the prosecutor's role in using and presenting expert testimony.

Prosecutorial misconduct may occur during most stages of a trial, beginning with the selection of witnesses, including the improper "shopping" for experts. Additional abuses occur when prosecutors fail to abide by rules governing the pretrial disclosure of scientific …

Ake V. Oklahoma: The Right To Expert Assistance In A Post-Daubert, Post-Dna World, Paul C. Giannelli

Faculty Publications

Although securing the services of defense experts to examine evidence, to advise counsel, and to testify at trial is frequently critical in modern criminal litigation, it was not until 1985 that the United States Supreme Court in Ake v. Oklahoma, 470 U.S. 68 (1985), recognized, for the first time, a constitutional right to expert assistance. In a system in which an overwhelming majority of criminal defendants are indigent, Ake was a landmark case. Nevertheless, the Ake Court could not have anticipated how the advent of DNA evidence would revolutionize forensic science or how the Daubert trilogy would alter the judicial …

Are Prosecutorial Ethics Standards Different?, Kevin C. Mcmunigal

Faculty Publications

Once a prosecutor determines to employ an expert, a number of distinct decisions must be confronted-from choosing the expert, to complying with discovery obligations, to presenting the testimony at trial. Part I of this essay considers the selection of experts. Although improper selection of experts can be viewed as merely another aspect of presenting misleading testimony, we treat it separately in this essay because the literature typically ignores it. Part 1I examines the pretrial disclosure of scientific evidence. The issues that have arisen in this context include late disclosure, omitting information from laboratory reports, declining to have a report prepared, …