Publication

Forensic Science in Legal Education

July 17, 2023 / Publication / Training and Education

In criminal cases, forensic science reports and expert testimony play an increasingly important role in adjudication. More states now follow a federal reliability standard, following Daubert v. Merrell Dow Pharmaceuticals

The Contribution of Forensic and Expert Evidence to DNA Exoneration Cases: An Interim Report

July 17, 2023 / Publication, Reports / DNA, Forensic Statistics, Implementation and Practice

This report is from Simon A. Cole, Vanessa Meterko, Sarah Chu, Glinda Cooper, Jessica Weinstock Paredes, Maurice Possley, and Ken Otterbourg (2022), The Contribution of Forensic and Expert Evidence to

Likelihood ratios for categorical count data with applications in digital forensics

July 14, 2023 / Publication / Digital, Forensic Statistics

We consider the forensic context in which the goal is to assess whether two sets of observed data came from the same source or from different sources. In particular, we

Uncertainty in probabilistic genotyping of low template DNA: A case study comparing STRMix™ and TrueAllele™

July 14, 2023 / Publication / DNA, Forensic Statistics

Two probabilistic genotyping (PG) programs, STRMix™ and TrueAllele™, were used to assess the strength of the same item of DNA evidence in a federal criminal case, with strikingly different results.

Analyzing spatial responses: A comparison of IRT- based approaches

July 12, 2023 / Publication / Forensic Statistics, Latent Print

We investigate two approaches for analyzing spatial coordinate responses using models inspired by Item Response Theory (IRT). In the first, we use a two-stage approach to first construct a pseudoresponse

Judging Firearms Evidence

July 12, 2023 / Publication / Firearms and Toolmarks, Implementation and Practice

Firearms violence results in hundreds of thousands of criminal investigations each year. To try to identify a culprit, firearms examiners seek to link fired shell casings or bullets from crime

A Rotation-Based Feature and Bayesian Hierarchical Model for the Forensic Evaluation of Handwriting Evidence in a Closed Set

July 12, 2023 / Publication / Forensic Statistics, Handwriting

Forensic handwriting examiners are often tasked with identifying the writer of a particular document. Examples of handwriting evidence include ransom notes, forged documents and signatures, and threatening letters. At present,

Shining a Light on Forensic Black-box Studies

July 12, 2023 / Publication / Forensic Statistics, Implementation and Practice

Forensic science plays a critical role in the United States criminal justice system. For decades, many feature-based fields of forensic science, such as firearm and toolmark identification, developed outside the

Creating a Forensic Database of Shoeprints from Online Shoe-Tread Photos

June 29, 2023 / Publication / Footwear

Shoe-tread impressions are one of the most common types of evidence left at crime scenes. However, the utility of such evidence is limited by the lack of databases of footwear

Perceptions of blind proficiency testing among latent print examiners

June 29, 2023 / Publication / Implementation and Practice, Latent Print

In recent years, scholars have levied multiple criticisms against traditional proficiency testing procedures in forensic laboratories. Consequently, on several occasions, authorities have formally recommended that laboratories implement blind proficiency testing

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