Evidence Commons^™

The Automated Fourth Amendment, Maneka Sinha

Faculty Scholarship

Courts routinely defer to police officer judgments in reasonable suspicion and probable cause determinations. Increasingly, though, police officers outsource these threshold judgments to new forms of technology that purport to predict and detect crime and identify those responsible. These policing technologies automate core police determinations about whether crime is occurring and who is responsible. Criminal procedure doctrine has failed to insist on some level of scrutiny of—or skepticism about—the reliability of this technology. Through an original study analyzing numerous state and federal court opinions, this Article exposes the implications of law enforcement’s reliance on these practices given the weighty interests …

Junk Science At Sentencing, Maneka Sinha

Faculty Scholarship

Junk science used in criminal trials has contributed to hundreds of wrongful convictions. But the problem is much worse than that. Junk science does not only harm criminal defendants who go to trial, but also the overwhelming majority of defendants—over ninety-five percent—who plead guilty, skip trial, and proceed straight to sentencing.

Scientific, technical, and other specialized evidence (“STS evidence”) is used regularly, and with increasing frequency, at sentencing. Despite this, Federal Rule of Evidence 702 and its state equivalents—which help filter unreliable STS evidence at trials—do not apply at the critical sentencing stage. In fact, at sentencing, no meaningful admissibility …

Beyond The Witness: Bringing A Process Perspective To Modern Evidence Law, Edward K. Cheng, G. Alexander Nunn

Faculty Scholarship

The focal point of the modern trial is the witness. Witnesses are the source of observations, lay and expert opinions, authentication, as well as the conduit through which documentary, physical, and scientific evidence is introduced. Evidence law therefore unsurprisingly concentrates on – or perhaps obsesses over – witnesses. In this Article, we argue that this witness-centered perspective is antiquated and counterproductive. As a historical matter, focusing on witnesses may have made sense when most evidence was the product of individual observation and action. But the modern world frequently features evidence produced through standardized, objective, and even mechanical processes that largely …

The Inability To Self-Diagnose Bias, Christopher Robertson

Faculty Scholarship

The Constitution guarantees litigants an 'impartial' jury, one that bases its judgment on the evidence presented in the courtroom, untainted by affiliations with the parties, racial animus, or media coverage that may include inadmissible facts, a one-sided portrayal, and naked opinion. Problems of juror bias arise in almost every trial – state and federal, civil and criminal - and the problem is most severe in the highest profile cases, where the need for accuracy and legitimacy in outcomes is most salient.

The Supreme Court has instructed courts to use a simple method to determine whether jurors are biased: ask them. …

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 …

The Fragile Promise Of Open-File Discovery, Ben Grunwald

Faculty Scholarship

Under traditional rules of criminal discovery, defendants are entitled to little prosecutorial evidence and are thus forced to negotiate plea agreements and prepare for trial in the dark. In an effort to expand defendants’ discovery rights, a number of states have recently enacted “open-file” statutes, which require the government to share the fruits of its investigation with the defense. Legal scholars have widely supported these reforms, claiming that they level the playing field and promote judicial efficiency by decreasing trials and speeding up guilty pleas. But these predictions are based largely on intuition and anecdotal data without extended theoretical analysis …

Copwatching, Jocelyn Simonson

Faculty Scholarship

No abstract provided.

Dna, Blue Bus, And Phase Changes, Edward K. Cheng, G. Alexander Nunn

Faculty Scholarship

In ‘Exploring the Proof Paradoxes’, Mike Redmayne comprehensively surveyed the puzzles at the intersection of law and statistics, the most famous of which is the Blue Bus problem, which prohibits legal actors from ascribing liability purely on the basis of probabilistic evidence. DNA evidence, however, is a longstanding exception to Blue Bus. Like Blue Bus, DNA presents probabilistic evidence of identity. Unlike Blue Bus, DNA is widely accepted as legitimate, even when it stands alone as so-called ‘naked’ statistical evidence. Observers often explain such DNA exceptionalism in two ways: either that people break down in extreme cases, or relatedly, that …

From Simple Statements To Heartbreaking Photographs And Videos: An Interdisciplinary Examination Of Victim Impact Evidence In Criminal Cases, Mitchell J. Frank

Faculty Scholarship

No abstract provided.

Dna And Distrust, Kerry Abrams, Brandon L. Garrett

Faculty Scholarship

Over the past three decades, government regulation and funding of DNA testing has reshaped the use of genetic evidence across various fields, including criminal law, family law, and employment law. Courts have struggled with questions of when and whether to treat genetic evidence as implicating individual rights, policy trade-offs, or federalism problems. We identify two modes of genetic testing: identification testing, used to establish a person’s identity, and predictive testing, which seeks to predict outcomes for a person. Judges and lawmakers have often drawn a bright line at predictive testing, while allowing uninhibited identity testing. The U.S. Supreme Court in …

Is There Really A Sex Bureaucracy?, Suzanne B. Goldberg

Faculty Scholarship

This essay identifies several features of the higher-education context that can enrich The Sex Bureaucracy‘s account of why colleges and universities have adopted new policies and trainings to address sexual assault on their campuses. These features include: 1) schools’ preexisting systems for addressing student conduct; 2) the shared interest of schools in reducing impediments to education, including nonconsensual sexual contact; and 3) the pedagogical challenges of developing trainings that are engaging and effective. Taking these three factors into account, we can see that while federal Title IX intervention has had a profound effect, it is also important not to …

The Incompatibility Of Due Process And Naked Statistical Evidence, G. Alexander Nunn

Faculty Scholarship

Numerous articles and commentaries have grappled with an undeniable feeling of injustice that comes from wrestling with naked statistical evidence. Even if, from a purely quantitative standpoint, the weight of the evidence supports the imposition of liability on a defendant, the sole use of probabilities to assess this liability seems innately unfair. This tension has spawned a great debate that questions the role of naked statistical evidence in today’s legal system. Contributing to this discourse, this Note argues that, in certain circumstances, the use of naked statistical evidence constitutes a due process violation. United States circuit courts have held that …

Wrongful Convictions And Upstream Reform In The Criminal Justice System, Kate Kruse

Faculty Scholarship

This Article explores the viability of upstream criminal justice reforms within the context of an adversary and procedural system of criminal justice, focusing on reforms in eyewitness identification procedures. Mistaken eyewitness identification evidence is often cited as the leading cause of wrongful convictions in the United States. Eyewitness identification reforms have also been the most developed upstream efforts to grow out of the innocence movement. The success and limitation of upstream reform in eyewitness identification shed light on the efficacy of upstream criminal justice system reform more generally, as well as in areas that are less developed, such as the …

Impeachment By Unreliable Conviction, Anna Roberts

Faculty Scholarship

No abstract provided.

A Primer On The Use Of Dangerous Trial Exhibits, Robert M. Jarvis

Faculty Scholarship

It sometimes is necessary at trial to introduce a dangerous exhibit-such as a bomb, gun, or knife-to bolster a client's story, discredit an opposing witness, or give the jury a clearer picture of the underlying events. Doing so, however, requires care and planning. Not only do many courts have specific rules regarding how such exhibits are to be noticed, handled, and displayed, but there are also numerous practical and tactical considerations that must be weighed. In this Article, the author presents the first comprehensive discussion regarding dangerous trial exhibits and offers suggestions for their successful use.

The Jury Wants To Take The Podium -- But Even With The Authority To Do So, Can It? An Interdisciplinary Examination Of Jurors' Questioning Of Witnesses At Trial, Mitchell J. Frank

Faculty Scholarship

No abstract provided.

Framing The Prosecution, Daniel C. Richman

Faculty Scholarship

The enormous value of Dan Simon’s In Doubt lies not just in its nuanced exploration of the challenges to accurate criminal factfinding, but also in its challenge to us to rethink trials themselves. Even as we endeavor to give criminal defendants the means and license to raise reasonable doubts, we need to think more about when and how those doubts can be allayed. Just because most jurisdictions have not come out of the first round of play – the one in which defendants get the tools to poke holes in the cases against them – does not mean it is …

Real Women, Real Rape, Bennett Capers

Faculty Scholarship

No abstract provided.

More Than A "Quick Glimpse Of The Life": The Relationship Between Victim Impact Evidence And Death Sentencing, Jerome E. Deise, Raymond Paternoster

Faculty Scholarship

In striking down the use of victim impact evidence (VIE) during the penalty phase of a capital trial, the Supreme Court in Booth v. Maryland and South Carolina v. Gathers argued that such testimony would appeal to the emotions of jurors with the consequence that death sentences would not be based upon a reasoned consideration of the blameworthiness of the offender. After a change in personnel, the Court overturned both decisions in Payne v. Tennessee, decided just two years after Gathers. The majority in Payne were decidedly less concerned with the emotional appeal of VIE, arguing that it would only …

Persuasive Visions: Film And Memory, Jessica Silbey

Faculty Scholarship

This commentary takes a new look at law and film studies through the lens of film as memory. Instead of describing film as evidence and foreordaining its role in truth-seeking processes, it thinks instead of film as individual, institutional and cultural memory, placing it squarely within the realm of contestability. Paralleling film genres, the commentary imagines four forms of memory that film could embody: memorabilia (cinéma vérité), memoirs (autobiographical and biographical film), ceremonial memorials (narrative film monuments of a life, person or institution), and mythic memory (dramatic fictional film). Imagining film as memory resituates film’s role in law (procedural, substantive …

Manson And Its Progeny: An Empirical Analysis Of American Eyewitness Law, Nicholas A. Kahn-Fogel

Faculty Scholarship

Since the Supreme Court established the current constitutional framework for determining the admissibility of eyewitness identification evidence in Manson v. Brathwaite in 1977, scientists and scholars who have evaluated the opinion have uniformly criticized it as insufficient to deter police from using flawed identification procedures and inconsistent with scientific evidence of the best ways to assess the reliability of evidence tainted by such procedures. Until now, however, the work of these scientists and scholars has been based primarily on simulation experiments and on a selective assortment of easily criticized judicial decisions applying Manson. This study provides the first systematic analysis …

Blind Justice, Bennett Capers

Faculty Scholarship

No abstract provided.

Real Rape, Too, Bennett Capers

Faculty Scholarship

No abstract provided.

Home Is Where The Crime Is, Bennett Capers

Faculty Scholarship

No abstract provided.

Thinking Like A Public Interest Lawyer: Theory, Practice, And Pedagogy, Jocelyn Simonson

Faculty Scholarship

No abstract provided.

The Unintentional Rapist, Bennett Capers

Faculty Scholarship

No abstract provided.

Analysis Of Videotape Evidence In Police Misconduct Cases, Martin A. Schwartz, Jessica Silbey, Jack Ryan, Gail Donoghue

Faculty Scholarship

Many evidentiary issues arise with respect to the admission of videotape evidence and computer generated simulations at trial, and the authors of this Article address these issues as they arise in police misconduct cases. Professor Schwartz provides insight into and analysis of the evidentiary principles that govern the use of video and computer simulation evidence at trial in cases where police misconduct is at issue. His discussion first addresses the issues that concern the admissibility of videotape evidence, then discusses the role of a videotape on summary judgment, and lastly, analyzes evidentiary issues with respect to computer generated simulations.

Case For A Constitutional Definition Of Hearsay: Requiring Confrontation Of Testimonial, Nonassertive Conduct And Statements Admitted To Explain An Unchallenged Investigation, The, James L. Kainen, Carrie A. Tendler

Faculty Scholarship

Crawford v. Washington’s historical approach to the confrontation clause establishes that testimonial hearsay inadmissible without confrontation at the founding is similarly inadmissible today, despite whether it fits a subsequently developed hearsay exception. Consequently, the requirement of confrontation depends upon whether an out-of-court statement is hearsay, testimonial, and, if so, whether it was nonetheless admissible without confrontation at the founding. A substantial literature has developed about whether hearsay statements are testimonial or were, like dying declarations, otherwise admissible at the founding. In contrast, this article focuses on the first question – whether statements are hearsay – which scholars have thus far …

A Witness To Justice, Jessica Silbey

Faculty Scholarship

In the 1988 film The Accused, a young woman named Sarah Tobias is gang raped on a pinball machine by three men while a crowded bar watches. The rapists cut a deal with the prosecutor. Sarah's outrage at the deal convinces the assistant district attorney to prosecute members of the crowd that cheered on and encouraged the rape. This film shows how Sarah Tobias, a woman with little means and less experience, intuits that according to the law rape victims are incredible witnesses to their own victimization. The film goes on to critique what the right kind of witness would …

Race, Genes And Justice: A Call To Reform The Presentation Of Forensic Dna Evidence In Criminal Trials, Jonathan Kahn

Faculty Scholarship

The article considers how and when, if at all, is it appropriate to use race in presenting forensic DNA evidence in a court of law? This relatively straightforward question has been wholly overlooked by legal scholars. By pursuing it, this article promises to transform fundamentally the presentation forensic DNA evidence. Currently, it is standard practice for prosecutors to use race in presenting the odds that a given defendant's DNA matches DNA found at a crime scene. This article takes an interdisciplinary approach to question the validity of this widespread but largely uninterrogated practice. It examines how race came to enter …