Law Commons^™

Firearm-Mark Evidence: Looking Back And Looking Ahead, David H. Kaye

Journal Articles

This article, written as a contribution to a festschrift for Paul Giannelli, surveys the development of the law on one type of feature-matching evidence that repeatedly attracted Professor Giannelli’s attention — “firearm-mark evidence.” By inspecting toolmarks on bullets or spent cartridge cases, firearms examiners can supply valuable information on whether a particular gun fired the ammunition in question. But the limits on this information have not always been respected in court, and a growing number of opinions have tried to address this fact.

The article explains how the courts have moved from a position of skepticism of the ability of …

Petition For Writ Of Certiorari, Montana V. Tipton, Leslie C. Griffin, Marci A. Hamilton, Paul G. Cassell

Supreme Court Briefs

No abstract provided.

Common Sense On Standards Of Proof, Kevin M. Clermont

Cornell Law Faculty Publications

The law speaks clearly on the standards of proof, but listeners often misunderstand its words. This article tries, with some common sense and a modicum of multivalent logic, to explain how the law expects its standards to be applied, and then to show how the law thereby avoids such complications as the conjunction paradox.

First, in accordance with belief function theory, the factfinder should start at zero belief. Given imperfect evidence, the factfinder will end up retaining a fair amount of uncommitted belief. As evidence comes in, though, the factfinder will form a belief in the truth of the disputed …

User-Generated Evidence, Rebecca Hamilton

Articles in Law Reviews & Other Academic Journals

Around the world, people are using their smartphones to document atrocities. This Article is the first to address the implications of this important development for international criminal law. While acknowledging the potential benefits such user-generated evidence could have for international criminal investigations, the Article identifies three categories of concern related to its use: (i) user security; (ii) evidentiary bias; and (iii) fair trial rights. In the absence of safeguards, user-generated evidence may address current problems in international criminal justice at the cost of creating new ones and shifting existing problems from traditional actors, who have institutional backing, to individual users …

The Technologies Of Race: Big Data, Privacy And The New Racial Bioethics, Christian Sundquist

Articles

Advancements in genetic technology have resurrected long discarded conceptualizations of “race” as a biological reality. The rise of modern biological race thinking – as evidenced in health disparity research, personal genomics, DNA criminal forensics, and bio-databanking - not only is scientifically unsound but portends the future normalization of racial inequality. This Article articulates a constitutional theory of shared humanity, rooted in the substantive due process doctrine and Ninth Amendment, to counter the socio-legal acceptance of modern genetic racial differentiation. It argues that state actions that rely on biological racial distinctions undermine the essential personhood of individuals subjected to such taxonomies, …

A Tale Of Two Standards: Why Wyoming Courts Should Apply The Actual Substantial Evidence Standard When Reviewing Workers’ Compensation Cases, Michael C. Duff

All Faculty Scholarship

In Wyoming, as in almost all states, facts in contested workers’ compensation cases are developed within an administrative agency. When agency factual findings are challenged in court, the level of judicial deference applied to the agency is important and may be outcome determinative. Wyoming courts claim to apply the “substantial evidence” standard of review, often expressed as evidence that a “reasonable mind could accept” as supporting an agency determination. The Wyoming Supreme Court, however, also sometimes upholds workers’ compensation agency decisions that are deemed “not contrary to the overwhelming weight of the evidence.” It is unclear whether this latter formulation …

Touch Dna And Chemical Analysis Of Skin Trace Evidence: Protecting Privacy While Advancing Investigations, Mary Graw Leary

Scholarly Articles

Forensic science transforms criminal investigations by resolving previously unsolvable cases and bringing an increased sense of justice to communities. This application of scientific disciplines to legal questions aids investigators in solving crimes. While many sciences can be utilized—such as physics (pattern evidence), chemistry (toxicology), or biology (cause of death), to name a few—two aspects of scientific advancement have played an outsized role in responding to crime. Trace evidence analysis—specifically, deoxyribonucleic acid (DNA) analysis—is an essential component to an effective and accurate criminal justice system. DNA evidence has emerged as a powerful tool to identify perpetrators of unspeakable crimes and to …

Introduction: Symposium On “Forensics, Statistics, And Law”, Brandon L. Garrett

Faculty Scholarship

No abstract provided.

Challenges Facing Judges Regarding Expert Evidence In Criminal Cases, Paul W. Grimm

Faculty Scholarship

No abstract provided.

Admissibility And Constitutional Issues Of The Concealed Information Test In American Courts: An Update, John B. Meixner Jr.

Scholarly Works

The use of physiological tools to detect incidentally acquired concealed knowledge about crime-related information has been a controversial and well-researched topic among scholars for well over 100 years. This chapter focuses on potential legal hurdles for courtroom use of concealed information tests, including admissibility issues and constitutional issues under the Fourth and Fifth Amendments to the US Constitution.

What Humility Isn’T: Responsibility And The Judicial Role, Benjamin Berger

Articles & Book Chapters

In recent years, academic literature has given some attention to humility as an important adjudicative principle or virtue. Drawing inspiration from a Talmudic tale, this chapter suggests that the picture of judicial humility painted in this literature is not only incomplete, but even potentially dangerous so. Seeking to complete the picture of what this virtue might entail, this piece explores the idea that humility is found in awareness of one’s position and role in respect of power, and a willingness to accept the burdens of responsibility that flow from this. The chapter examines elements of Chief Justice McLachlin’s criminal justice …

Adopted Statements In The Digital Age: Hearsay Responses To Social Media "Likes", Daniel R. Tilly

Scholarly Works

Social media users collectively register billions of "likes" each and every day to the endless flow of content posted on social networking websites. What an individual user actually intends by the quick click of the "like" button may vary widely. Perhaps she is conveying acknowledgement but not agreement. Maybe he is expressing support but not acceptance. Within the social media context, short-form clicks register the same response. Yet they may be intended to convey sorrow, joy, support, agreement, acknowledgement, humor, or a multitude of other emotions. What a user actually intends by social media "likes" depends entirely on the person …

Deconstructing The Epistemic Challenges To Mass Atrocity Prosecutions, Nancy Amoury Combs

Faculty Publications

Mass atrocity prosecutions are credited with advancing a host of praiseworthy objectives. They are believed to impose much-needed retribution, deter future atrocities, and affirm the rule of law in previously lawless societies. However, mass atrocity prosecutions will accomplish none of these laudable ends unless they are able to find accurate facts. Convicting the appropriate individuals of the appropriate crimes is a necessary and foundational condition for the success of mass atrocity prosecutions. But it is a condition that is frequently difficult to meet, as mass atrocity prosecutions are often bedeviled by pervasive and invidious obstacles to accurate fact-finding. This Article …

Why Courts Fail To Protect Privacy: Race, Age, Bias, And Technology, Bernard Chao, Catherine Durso, Ian Farrell, Christopher Robertson

Sturm College of Law: Faculty Scholarship

The Fourth Amendment protects against unreasonable “searches and seizures,” but in the digital age of stingray devices and IP tracking, what constitutes a search or seizure? The Supreme Court has held that the threshold question depends on and reflects the “reasonable expectations” of ordinary members of the public concerning their own privacy. For example, the police now exploit the “third party” doctrine to access data held by email and cell phone providers, without securing a warrant, on the Supreme Court’s intuition that the public has no expectation of privacy in that information. Is that assumption correct? If judges’ intuitions about …

Unlocking The Fifth Amendment: Passwords And Encrypted Devices, Laurent Sacharoff

Sturm College of Law: Faculty Scholarship

Each year, law enforcement seizes thousands of electronic devices — smartphones, laptops, and notebooks — that it cannot open without the suspect’s password. Without this password, the information on the device sits completely scrambled behind a wall of encryption. Sometimes agents will be able to obtain the information by hacking, discovering copies of data on the cloud, or obtaining the password voluntarily from the suspects themselves. But when they cannot, may the government compel suspects to disclose or enter their password?

This Article considers the Fifth Amendment protection against compelled disclosures of passwords — a question that has split and …

Surprise Vs. Probability As A Metric For Proof, Edward K. Cheng, Matthew Ginther

Vanderbilt Law School Faculty Publications

In this Symposium issue celebrating his career, Professor Michael Risinger in Leveraging Surprise proposes using "the fundamental emotion of surprise" as a way of measuring belief for purposes of legal proof. More specifically, Professor Risinger argues that we should not conceive of the burden of proof in terms of probabilities such as 51%, 95%, or even "beyond a reasonable doubt." Rather, the legal system should reference the threshold using "words of estimative surprise" -asking jurors how surprised they would be if the fact in question were not true. Toward this goal (and being averse to cardinality), he suggests categories such …

Mitochondrial Dna Replacement: Moral And Halakhic Concerns, J. David Bleich

Articles

Mitochondrial DNA (mtDNA), transmitted from mother to child, have their own genetic code that may cause debilitating genetic diseases. To prevent such unfortunate occurrences, researchers have developed a process enabling them to completely replace an ovum’s mitochondria with mitochondria contributed by a donor. Children born by use of this method have genetic material from both the mitochondrial donor and the birth mother; they are “three-parent babies.” Resultant medical, ethical, legal and theological problems are obvious.

Moreover, this technology may pose significant risks to neonates born of such procedures. Certainly no person has the right to cause harm to a fellow …

Debunked, Discredited, But Still Defended: Why Prosecutors Resist Challenges To Bad Science And Some Suggestions For Crafting Remedies For Wrongful Conviction Based On Changed Science, Aviva A. Orenstein

Articles by Maurer Faculty

Flawed science has significantly contributed to wrongful convictions. Courts struggle with how to address such convictions when the mistaken science (such as bogus expert claims about the differences between accidental fires and intentionally set ones) significantly affected the guilty verdict but there is no DNA evidence to directly exonerate the accused. My short piece explores why prosecutors often defend bad science. Mistakes in science tend to serve the prosecution, but there are other more subtle factors that explain prosecutors’ reluctance to address flawed forensic testimony. Such reluctance may arise from fondness for the status quo and a resistance to subverting …

A ‘Bad Rap’: R. V. Skeete And The Admissibility Of Rap Lyric Evidence, Ngozi Okidegbe

Faculty Scholarship

The use of accused-authored rap lyric evidence is no longer rare in Canadian criminal proceedings. Adduced by Crown prosecutors, rap lyrics written or co-written by an accused are increasingly used in criminal trials as evidence of the accused’s intent, knowledge, motive, identity, or confession to the commission of the specific offence charged. The practice is not without controversy.¹ The introduction of an accused’s artistic work in the form of rap lyrics at trial engages trial fairness concerns. Without a keen awareness of the social and cultural context that produces rap music, trial actors risk inflating their probative value and …

Character Flaws, Frederic Bloom

Publications

Character evidence doctrine is infected by error. It is riddled with a set of pervasive mistakes and misconceptions—a group of gaffes and glitches involving Rule 404(b)’s “other purposes” (like intent, absence of accident, and plan) that might be called “character flaws.” This Essay identifies and investigates those flaws through the lens of a single, sensational case: United States v. Henthorn. By itself, Henthorn is a tale worth telling—an astonishing story of danger and deceit, malice and murder. But Henthorn is more than just a stunning story. It is also an example and an opportunity, a chance to consider character …

Forensics, Chicken Soup, And Meteorites: A Tribute To Michael Risinger, Edward K. Cheng

Vanderbilt Law School Faculty Publications

Michael Risinger's scholarship has had a profound impact on our field. And while his work has run the gamut in evidence law, I think it is clear that Michael's true love has always been expert evidence, and more specifically, forensics. So let me take a moment to revisit "an oldie but a goodie": his 1989 article entitled Exorcism of Ignorance as a Proxy for Rational Knowledge: The Lessons of Handwriting Identification "Expertise," published in the University of Pennsylvania Law Review, and co-authored with Mark Denbeaux and Michael Saks.' For those of you who have not read the article, you should. …

The Logic And Limits Of Event Studies In Securities Fraud Litigation, Jill E. Fisch, Jonah B. Gelbach, Jonathan Klick

All Faculty Scholarship

Event studies have become increasingly important in securities fraud litigation after the Supreme Court’s decision in Halliburton II. Litigants have used event study methodology, which empirically analyzes the relationship between the disclosure of corporate information and the issuer’s stock price, to provide evidence in the evaluation of key elements of federal securities fraud, including materiality, reliance, causation, and damages. As the use of event studies grows and they increasingly serve a gatekeeping function in determining whether litigation will proceed beyond a preliminary stage, it will be critical for courts to use them correctly.

This Article explores an array of …

Honesty Without Truth: Lies, Accuracy, And The Criminal Justice Process, Lisa Kern Griffin

Faculty Scholarship

Focusing on “lying” is a natural response to uncertainty but too narrow of a concern. Honesty and truth are not the same thing and conflating them can actually inhibit accuracy. In several settings across investigations and trials, the criminal justice system elevates compliant statements, misguided beliefs, and confident opinions while excluding more complex evidence. Error often results. Some interrogation techniques, for example, privilege cooperation over information. Those interactions can yield incomplete or false statements, confessions, and even guilty pleas. Because of the impeachment rules that purportedly prevent perjury, the most knowledgeable witnesses may be precluded from taking the stand. The …

Bias On Trial: Toward An Open Discussion Of Racial Stereotypes In The Courtroom, Mikah K. Thompson

Faculty Works

In the 2017 case Pena-Rodriguez v. Colorado, the U.S. Supreme Court discussed several safeguards that are in place to assist the trial court in identifying racial bias among jurors. These safeguards include voir dire examination regarding racial bias, observation of juror demeanor and conduct that might demonstrate racial bias, reports of racially biased comments or actions by jurors during trial, and non-juror evidence of racial bias after trial. The Court acknowledged that these safeguards may be insufficient at times and therefore added a fifth one, holding that trial courts may review evidence suggesting that racial bias was a motivating factor …

Terry Stops And Frisks: The Troubling Use Of Common Sense In A World Of Empirical Data, David A. Harris, David Rudovsky

Articles

The investigative detention doctrine first announced in Terry v. Ohio and amplified over the past fifty years has been much analyzed, praised, and criticized from a number of perspectives. Significantly, however, over this time period commentators have only occasionally questioned the Supreme Court’s “common sense” judgments regarding the factors sufficient to establish reasonable suspicion for stops and frisks. For years, the Court has provided no empirical basis for its judgments, due in large part to the lack of reliable data. Now, with the emergence of comprehensive data on these police practices, much can be learned about the predictive power of …

Racial Character Evidence In Police Killing Cases, Jasmine Gonzales Rose

Faculty Scholarship

The United States is facing a twofold crisis: police killings of people of color and unaccountability for these killings in the criminal justice system. In many instances, the officers’ use of deadly force is captured on video and often appears clearly unjustified, but grand and petit juries still fail to indict and convict, leaving many baffled. This Article provides an explanation for these failures: juror reliance on “racial character evidence.” Too often, jurors consider race as evidence in criminal trials, particularly in police killing cases where the victim was a person of color. Instead of focusing on admissible evidence, jurors …

The Admissibility Of Sampling Evidence To Prove Individual Damages In Class Actions, Hillel J. Bavli, John Kenneth Felter

Faculty Journal Articles and Book Chapters

The 2016 Supreme Court decision in Tyson Foods, Inc. v. Bouaphakeo revived the use of “representative” or sampling evidence in class actions. Federal courts are now more receptive to class plaintiffs’ efforts to prove classwide liability and, occasionally, aggregate damages, with sampling evidence. However, federal courts still routinely deny motions for class certification because they find that calculations of class members’ individual damages defeat the predominance prerequisite of Rule 23(b)(3). As a result, meritorious classwide claims founder. In this paper, we combine legal and statistical analyses and propose a novel solution to this dilemma that adheres to the Tysondecision …

The Missing American Jury: Restoring The Fundamental Constitutional Role Of The Criminal, Civil, And Grand Juries, Anna Roberts

Faculty Publications

(Excerpt)

This is a bold book. Professor Thomas urges that the jury—criminal, civil, and grand—be recognized as a fourth “branch” (p. 5). She asserts that procedures that have contributed to the reduction of the jury’s power—including summary judgment and state prosecution without grand juries—are unconstitutional. And, as a Plan B if her constitutional arguments do not prevail, she proposes big changes that include informing juries about sentence exposure, presenting juries with any charges that were offered in plea bargaining, and requiring that juries justify their verdicts.

Sexual Consent And Disability, Jasmine E. Harris

All Faculty Scholarship

Our nation is engaged in deep debate over sexual consent. But to date the discussion has overlooked sexual consent’s implications for a key demographic: people with mental disabilities, for whom the reported incidence of sexual violence is three times that of the nondisabled population. Even as popular debate overlooks the question of sexual consent for those with disabilities, contemporary legal scholars critique governmental overregulation of this area, arguing that it diminishes the agency and dignity of people with disabilities. Yet in defending their position, these scholars rely on empirical data from over twenty years ago, when disability and sexual assault …

Opting Out Of Discovery, Jay Tidmarsh

Journal Articles

This Article proposes a system in which both parties are provided an opportunity to opt out of discovery. A party who opts out is immunized from dispositive motions, including a motion to dismiss for failure to state a claim or a motion for summary judgment. If neither party opts out of discovery, the parties waive jury-trial rights, thus giving judges the ability to use stronger case-management powers to focus the issues and narrow discovery. If one party opts out of discovery but an opponent does not, the cost of discovery shifts to the opponent. This Article justifies this proposal in …