Evidence Commons^™

Hearsay In High Definition: Body-Worn Cameras And The Future Of Intimate Partner Violence Prosecutions, Kenechukwu Okocha

Working Papers

Technological advances in documenting police encounters with the public have outpaced evidentiary hearsay rules. Specifically, the rapid adoption of body-worn cameras (BWCs), fueled by racial justice and police reform advocates, has produced previously unavailable, vivid, and timely recordings of IPV victims’ accounts of abuse. Unfortunately, state and federal rules governing hearsay often prevent juries from considering these out-of-court statements. Such restrictions carry particular force in IPV cases, where victims frequently recant or decline to testify at trial due to abuser manipulation or distrust of the criminal justice system.

Courts and legislatures have eased some evidentiary restrictions in IPV cases in …

Angel Gutierrez-Zacatenco V. Rosa Herrera, 142 Nev. Adv. Op. 52 (Aug. 13, 2026), Sana Azim

Nevada Supreme Court Summaries

Incomplete medical records can be authenticated for admissibility purposes through a sufficient fact-specific demonstration of authenticity.

The Use And Abuse Of Hearsay In Family Law Matters, Jessica Tueller, Monica Dionisio

Other Faculty Publications

No abstract provided.

Zhang V. Zhang, 142 Nev. Adv. Op. 45 (June 18, 2026), Nathan Mackay

Nevada Supreme Court Summaries

Even when a party has violated their disclosure requirements, a district court must analyze the Young factors before issuing a discovery sanction that effectively terminates the case with prejudice.

Byron Aaron Garcia V. State Of Nevada, 142 Nev. Adv. Op. 42 (Jun. 11, 2026), Lauren Jung

Nevada Supreme Court Summaries

A probationer is not denied due process when the district court relies on the totality of everything, including the preliminary hearing transcript, prior police investigation report, and probation violation report and police report to revoke probation and impose a suspended sentence.

Off-Label Neuroimaging, Jane C. Moriarty

Law Faculty Publications

The growth of neuroimaging evidence in the courtroom is consistent with the increased reliance on technical and machine-based specialties at trial. Litigants routinely seek to introduce neuroimaging evidence in both civil and criminal trials to supplement traditional medical, psychiatric, and psychological opinion testimony. A substantial portion of neuroimaging evidence is still in the developmental stage—what I term “off-label neuroimaging.” Unsurprisingly, evaluating the reliability of developing neuroimaging poses challenging questions for gatekeeping courts. Among the complex evidentiary issues neuroimaging presents for courts and litigants, this Article considers one foundational question: How should courts determine whether neuroimaging evidence is sufficiently reliable for …

Ai Suppression: E-Discovery Software And Brady, Jason Hartline, Liren Shan, Alec Sun, Rebecca Wexler

Faculty Scholarship

Prosecutors regularly rely on AI e-discovery software, known as technology assisted review (TAR) tools, to sort and prioritize digital evidence. These tools implicate constitutional concerns: they can either risk suppressing or help to surface exculpatory and impeachment evidence that prosecutors must disclose under the Brady due process rule. Yet doctrine, agency guidance, and scholarship offer virtually no direction on their use.

This Article examines how TAR affects Brady compliance. Using computer science simulations on synthetic data sets, we show that TAR can either hide or help to expose Brady evidence, depending on how it is configured and the configurations of …

Rethinking Us Evidence Law: Burdens Of Proof And The Effect Of Rebuttable Evidentiary Presumptions, Paul F. Rothstein, Ronald J. Coleman

Georgetown Law Faculty Publications and Other Works

This is the draft table of contents for a forthcoming book from Edward Elgar Publishing. It is posted here with permission of the publisher.

Cardozo Law Announces Three New Faculty Appointments, Benjamin N. Cardozo School Of Law

Cardozo Law News Archive

Cardozo School of Law announced the appointments of three new faculty members: Assistant Professor of Law Mridula Raman, Assistant Clinical Professor of Law and Co-Director of the Civil Rights Clinic Stefen R. Short, and Harold A. Stevens Visiting Assistant Professor of Law Fregine Sheehy. Their expertise spans criminal law, civil rights, disability justice, critical race theory, evidence, and human rights law.

Metrics Not Thresholds: How To Regulate Ai And Other Expert Methods For Use In Criminal Investigations And Proceedings, Rebecca Wexler

Faculty Scholarship

Should regulators set performance thresholds for AI tools used in the criminal legal system? This Article draws on U.S. evidence law for guidance. Its answer is ... don’t. Instead of gatekeeping with ex ante performance thresholds, regulators should require or incentivize metrics of reliability that can be clearly communicated to end-user decisionmakers.

Richt V. State Of Nevada, 142 Nev. Adv. Op. 32 (April 30, 2026), Vanessa Arias

Nevada Supreme Court Summaries

A defendant must establish a foundation for a self-defense claim before being allowed to bring in evidence of the victim's character. If the defendant wishes to admit evidence to support a self-defense claim it must be relevant. Lay witnesses are allowed to testify regarding their own perception.

Smith (Sophia) V. State, 142 Nev. Adv. Op. 26, 587 P.3d 251 (Apr. 9, 2026), Karin Tidgewell

Nevada Supreme Court Summaries

In Smith (Sophia) v. State, the Nevada Supreme Court held that violations of NRS 200.5099(3) should be prosecuted as one count of elder exploitation per victim, regardless of the number of acts that occur against a single victim.

Childhood, Likelihood, And Probative Value: A Further Call For Greater Probity And Less Childism In Evidence Law, Mae C. Quinn

Faculty Scholarship

No abstract provided.

The Psychology Of A Favor: Why Hidden Witness Payments Demand A New Brady Rule, Adam M. Gershowitz

Faculty Publications

Prosecutors and the police regularly pay informants and other witnesses in criminal cases. These payments can be in the form of rewards, relocation expenses, crime victims funds, and even simple cash. Although witness payments are legal, prosecutors are supposed to disclose them under the Brady doctrine because they are favorable evidence that the defense could use to impeach the witness. Yet prosecutors often fail to disclose witness payments because of communication failures with the police, poor training, excessive caseloads, and occasional ethical lapses.

This Article examines dozens of hidden witness payments that prosecutors failed to disclose. In nearly eighty percent …

Understanding “Truth Of The Matter Asserted”, Frank Rosenblatt

Journal Articles

Many people struggle to understand hearsay. It’s not their fault. The hearsay definition is confusing and unhelpful, especially its final phrase: that hearsay is an out-of-court statement1 offered to prove “the truth of the matter asserted” in the statement.2 What does “truth of the matter asserted” mean? The definition’s plain language isn’t much help. This paper shares the basic example that I have found to be most effective in my law school evidence classes to diagnose hearsay.

Matadamas-Serrano V. State, 142 Nev. Adv. Op. 20 (Mar. 5, 2026), Mary Shamon

Nevada Supreme Court Summaries

A district court does not commit reversible error by denying a Batson challenge at step one based on strike percentages alone, or by allowing a substitute coroner to give an independent opinion based on autopsy photographs.

Evidence And Assessing Verbatim Transcription Quality Of Black English And Standard American English, L. Alexander Walker Iii

Faculty Scholarship

This chapter explores the accuracy of private transcription services when transcribing Black English and Standard American English. Courts and lawyers in the US regularly rely on transcripts from such services, but third-party verification of their accuracy, especially with respect to their quality when faced with nonstandard language varieties, is lacking. This study draws on experimental methods to contrast the quality of transcription services offered by transcribers and AI route. The quantitative results show that transcription by humans and AI resulted in more mistakes when transcribing Black English than when transcribing Standard American English. Furthermore, a qualitative analysis reveals that these …

The Brady Materiality Standard, Brandon L. Garrett, Adam M. Gershowitz

Faculty Publications

The Brady doctrine requires prosecutors to disclose all favorable and material evidence to the defense. To effectuate that rule, the U.S. Supreme Court has defined materiality as a “reasonable probability” that the evidence would have affected the outcome at trial. But apart from that definition, the Court has resisted offering any further guidance to lower courts. While far too little is known about how Brady materiality claims are actually adjudicated, there is strong evidence that courts often reject Brady claims involving withheld evidence on the grounds that the evidence was not significant enough to be material.

To examine how Brady …

Toys As Evidence, Randall K. Johnson

Faculty Works

This Essay asks and answers a single question, which was posed during a recent symposium at the National Museum of Toys & Miniatures. Could the study of revealed preferences, which is the idea that observed behaviors are the best indicator of one’s beliefs, improve our collective understanding about what constitutes unlawful discrimination in certain U.S. markets? A possible answer, which is informed by the Brown v. Board of Education decision, is the study of revealed preferences may improve our collective understanding for three reasons.

One reason is the study of revealed preferences provides a window into how some producers and …

The Empirical Double Standard: Opinion Surveys Across The Civil–Criminal Divide, Kay L. Levine, Bernard Chao

Faculty Articles

Across different legal domains, liability doctrines recognize the value of community input. But do courts truly listen to the community’s voice when deciding these sorts of cases? This study is the first to explore how courts treat community opinion survey evidence within both civil and criminal law. To that end, we comprehensively examine trademark, false advertising, patent, antitrust, obscenity, death penalty, and search cases.

Our research uncovers a significant asymmetry: Courts readily admit survey evidence in civil proceedings but systematically exclude it in criminal cases. This asymmetry does not appear to stem from structural differences between civil and criminal litigation …

Keeping Evidence Real, Anya Bernstein, Julia Simon-Kerr

Faculty Scholarship

Commentators largely agree that the Federal Rules of Evidence have problems. Expert testimony standards admit junk science. Impeachment rules chill defendant testimony. The hearsay regime defies consistent application and obstructs self-representation. The list goes on: Many rules fail to assist, or affirmatively thwart, jurors trying to make good decisions. Such shortcomings disproportionately harm those with the least power in the system, raising profound questions about whether the evidence code serves its statutory mandate—to promote truth and justice in court proceedings. In the face of widely recognized problems, the government body charged with managing the evidence code—the Advisory Committee on Evidence …

Trial By Character, Hillel J. Bavli

Faculty Journal Articles and Book Chapters

In this Article, I argue that courts regularly deviate from Federal Rule of Evidence 404(b), which prohibits character evidence—evidence of a defendant’s past misdeeds offered to prove that the defendant acted in conformity with a certain character trait on the occasion in question. These deviations undermine the fairness of a trial and the presumption of innocence. The Article addresses this problem in three ways. First, it explains how courts have misinterpreted Rule 404(b)—an error that I call the permitted-purpose fallacy—and how they have fortified this misinterpretation with a body of flawed principles and precedent. Second, it reports the results of …

Automated Writer And Acquisition-Condition Classification Of Digitally Captured Handwriting Using Statistical Dynamic Features And Support Vector Machines, Long-Huang Tsai, Hsiang-Ju Lai, Wen-Chao Yang, Jiajun Jiang, Chung-Hao Chen

Electrical & Computer Engineering Faculty Publications

Digitally captured handwriting preserves pen trajectories and dynamic signals, but it also records hardware- and input-dependent properties that can confound forensic interpretation. This study revises a support vector machine (SVM) screening framework using 16,500 samples from 30 writers, 11 writing-content categories, and five acquisition conditions spanning three tablets and stylus or finger input. Twenty-four raw and derived time-series variables were summarized by maximum, minimum, mean, median, and standard deviation, yielding 120 features; the mode statistic was removed. Writing direction and angular velocity were recalculated with atan2-based vector formulas. Unavailable device/API channels were encoded as zero, and Z-score parameters were estimated …

Misinformation And The Law, Gustavo Ribeiro

Scholarly Articles in Law Reviews & Journals

This Article bridges critical gaps between the growing body of social science research on misinformation and the persistent challenges jurors face in evaluating potentially unreliable evidence in courtrooms. Misinformation—a pervasive issue undermining decision-making in democratic societies—mirrors the difficulties jurors encounter in distinguishing truth from falsehood amid compelling but unreliable evidence. The consequences of such challenges are dire: wrongful convictions, racial disparities, and the erosion of public trust in the legal system.

This Article is the first piece of legal scholarship to provide a comprehensive discussion of current research on the psychological mechanisms underlying susceptibility to misinformation—such as the illusory truth …

The Federal Rules Of Evi-Dance: Exploring And Reimagining Evidence Law Through Music, And Proposing Amendments To Rule 604, Brian C. Potts

Faculty Articles

Every trial has a rhythm and a flow. Every trial is a performance. This article extends the literature on law and music further into the field of evidence. I offer a new exploration and reimagining of the Federal Rules of Evidence through leitmotivs. I contend that leitmotivs—musical calling cards—reify principles of evidence law. As I spin these leitmotivs, I propose two amendments to Rule 604 regarding the oath for courtroom interpreters. I propound a new critique explaining how and why courts are wrong when they often claim “Daubert did not work a ‘seachange’ over federal evidence law.” I tender two …

The Devil Is In The Det[Ai]Ls: Ai Agents, Ghost Students, And The Crisis Of Verified Presence In An Agentic Ai World, Aras Bozkurt, Helen Crompton, Caroline Fell Kurban

STEMPS Faculty Publications

The transition from reactive Generative Artificial Intelligence (GenAI) to agentic AI systems marks a categorical shift in digital education, moving beyond simple content generation to goal-oriented, autonomous execution. This paper explores the emergence of the “ghost student”: a digital surrogate created by the coupling of Large Language Models (the “mind”) and agentic AI browsers (the “body”). These entities are capable of navigating Learning Management Systems (LMS), engaging with content, and completing assessments with human-like mimicry, often rendering the actual learner’s presence optional. We argue that this phenomenon creates a verification gap that traditional proctoring and detection tools are structurally unable …

Adversarial Certification Of Evidentiary Software, Nicholas G. Vincent, Bryan H. Choi, Eli Siems, Clay Halbert, Katherine J. Strandburg

Publications

No abstract provided.

The Brady Materiality Standard, Brandon L. Garrett, Adam M. Gershowitz

Faculty Scholarship

The Brady doctrine requires prosecutors to disclose all favorable and material evidence to the defense. To effectuate that rule, the U.S. Supreme Court has defined materiality as a “reasonable probability” that the evidence would have affected the outcome at trial. But apart from that definition, the Court has resisted offering any further guidance to lower courts. While far too little is known about how Brady materiality claims are actually adjudicated, there is strong evidence that courts often reject Brady claims involving withheld evidence on the grounds that the evidence was not significant enough to be material.

To examine how Brady …

Orenstein To Receive 2026 John Henry Wigmore Award For Lifetime Achievement, Maurer School Of Law - Indiana University

Keep Up With the Latest News from the Law School (blog)

Professor Aviva A. Orenstein, the Karen Lake Buttrey and Donald W. Buttrey Chair at the Indiana University Maurer School of Law, has been named the recipient of the 2026 John Henry Wigmore Award for Lifetime Achievement.

The John Henry Wigmore Award, presented by the Evidence Section of the Association of American Law Schools (AALS), honors individuals whose careers have made exceptional contributions to the field of evidence law. Previous recipients include leading scholars in evidence whose work has shaped teaching, scholarship, and practice.

“The award is presented to evidence scholars who have made leading contributions to the understanding of …

Talley V. The State Of Nevada, 141 Nev. Adv. Op. 61 (Dec. 04, 2025), Sabrina Richards

Nevada Supreme Court Summaries

No abstract provided.