Law Commons^™

Firearms And Toolmark Error Rates, Susan Vanderplas, Kori Khan, Heike Hofmann, Alicia L. Carriquiry

Department of Statistics: Faculty Publications

We have outlined several problems with the state of error rate studies on firearm and toolmark examination. Fundamentally, we do not know what the error rate is for these types of comparisons. This is a failure of the scientific study of toolmarks, rather than the examiners themselves, but until this is corrected with multiple studies that meet the criteria described in Section 3, we cannot support the use of this evidence in criminal proceedings.

Controlling The Jury-Teaching Function, Richard D. Friedman

Articles

When evidence with a scientific basis is offered, two fundamental questions arise. First, should it be admitted? Second, if so, how should it be assessed? There are numerous participants who might play a role in deciding these questions—the jury (on the second question only), the parties (through counsel), expert witnesses on each side, the trial court, the forces controlling the judicial system (which include, but are not limited to, the appellate courts), and the scientific establishment. In this Article, I will suggest that together, the last two—the forces controlling the judicial system and the scientific establishment—have a large role to …

The Child Quasi-Witness, Richard D. Friedman, Stephen J. Ceci

Articles

This Essay provides a solution to the conundrum of statements made by very young children and offered against an accused in a criminal prosecution. Currently prevailing doctrine allows one of three basic outcomes. First, in some cases the child testifies at trial. But this is not always feasible, and when it is, cross-examination is a poor method for determining the truth. Second, evidence of the child's statement may be excluded, which denies the adjudicative process of potentially valuable information. Third, the evidence may be admitted without the child testifying at trial, which leaves the accused with no practical ability to …

Jack Weinstein And The Missing Pieces Of The Hearsay Puzzle, Richard D. Friedman

Articles

For the first three quarters of the twentieth century, the Wigmore treatise was the dominant force in organizing, setting out, and explaining the American law of evidence. Since then, the first two of those roles have been taken over in large part by the Federal Rules of Evidence (Rules). And the third has been performed most notably by the Weinstein treatise. Judge Jack Weinstein was present at the creation of the Rules and before. Though he first made his name in Civil Procedure, while still a young man he joined two of the stalwarts of evidence law, Edmund Morgan and …

The Nrc Report And Its Implications For Criminal Litigation, Paul C. Giannelli

Faculty Publications

The National Research Council, an arm of the National Academy of Sciences, issued a landmark report on forensic science in February 2009. In the long run, the report’s recommendations, if adopted, would benefit law enforcement and prosecutors. The recommendations would allow forensic science to develop a strong scientific basis and limit evidentiary challenges regarding the reliability of forensic evidence. In keeping with its congressional charge, however, the NRC Committee did not directly address admissibility issues. Nevertheless, given its content, the report will inevitably be cited in criminal cases. Indeed, within months, the United States Supreme Court cited the report, noting …

Expert Information And Expert Evidence: A Preliminary Taxonomy, Samuel R. Gross, Jennifer L. Mnookin

Articles

Federal Rule of Evidence 702 speaks in very general terms. It governs every situation in which "scientific, technical or other specialized knowledge will assist the trier of fact," and provides that, in that situation, "a witness qualified as an expert by knowledge, skill, experience, or education, may testify thereto in the form of an opinion or otherwise . . . .' In 2000, following a trio of Supreme Court cases interpreting Rule 702, the Rule was amended to include a third requirement, in addition to the helpfulness of the testimony and the qualifications of the witness: reliability. Under Rule 702 …

"Whodunit" Versus "What Was Done": When To Admit Character Evidence In Criminal Cases, Sherry F. Colb

Cornell Law Faculty Publications

In virtually every jurisdiction in the United States, the law of evidence prohibits parties from offering proof of an individual's general character traits to suggest that, on a specific occasion, the individual behaved in a manner consistent with those traits. In a criminal trial in particular, the law prohibits a prosecutor's introduction of evidence about the defendant's character as proof of his guilt. In this Article, Professor Colb proposes that the exclusion of defendant character evidence is appropriate in one category of cases but inappropriate in another. In the first category, which Professor Colb calls "whodunit" cases, the parties agree …

Scientific Testing & Proof Of Paternity: Some Controversy And Key Issues For Family Law Counsel, Christopher L. Blakesley

Scholarly Works

Blood and tissue testing, especially DNA matching, have become important elements of both criminal and paternity or maternity litigation. Such scientific testing has become so important that it has taken on aspects that may cause it to benefit or to do harm to the judicial process or to any given case. This article focuses on the value and the dangers surrounding this interesting subject.

The 1995 Louisiana Supreme Court decision in Pace v. State reemphasized the importance of DNA testing generally and the significance of blood and tissue genetic testing used to exclude paternity. The advances in and importance of …

The Death And Transfiguration Of Frye, Richard D. Friedman

Articles

The rule of Frye v. United States was seventy years old, and had long dominated American law on the question of how well established a scientific principle must be for it to provide the basis for expert testimony. Even after the passage of the Federal Rules of Evidence, several of the federal circuits, as well as various states, purported to adhere to Frye's "general acceptance" standard. But now, unanimously, briefly, and with no apparent angst, the United States Supreme Court has held in Daubert v. Merrell Dow Pharmaceuticals, Inc. that the Frye rule is incompatible with the Federal Rules.

The Silent Revolution, Faust Rossi

Cornell Law Faculty Publications

No abstract provided.

Opinions And Expert Testimony, John W. Reed

Book Chapters

Article VI of the Michigan Rules of Evidence contains the rules dealing with witnesses. Trials bring to mind testimonial evidence. There surely are other kinds of evidence, such as docmnents, guns, automobile tires, chemical substances, and the like. But most evidence comes from the mouths of witnesses, and even demonstrative evidence usually is admitted only after a witness has taken the stand and testified to foundation facts. So it is important and appropriate that we turn to the provisions of the rules that deal with qualifications and credibility of witnesses. I would like to direct your attention to MRE 601 …

Evidence Problems In Criminal Cases, John W. Reed

Book Chapters

The Federal Rules of Evidence, enacted by Congress, became effective on July 1, 1975. Ten states have adopted state versions of the Federal Rules to govern trials in their courts, and about half the remaining states are considering whether to follow suit. Michigan is one of these latter states. Early in 1977 a committee appointed by the Supreme Court of Michigan proposed rules of evidence for Michigan closely patterned on the Federal Rules, and, if all goes well, the Court will promulgate rules for the Michigan courts to become effective in 1977 or soon thereafter. Michigan lawyers should be aware …

Privileges In The Law Of Evidence: The Realities Of Attorney-Client Confidences, Robert Allen Sedler, Joseph J. Simeone

Law Faculty Research Publications

No abstract provided.