Double Loop Podcast

Glenn Langenburg leads a panel discussion (with Eric Ray joining via phone) at the Pacific Northwest Division of the IAI / Northwest Association of Forensic Scientists Joint Conference with guests and Janis Puracal from the Forensic Justice Project and Carey Hall. The panel discussion explores the Janis's history with exonerations, innocence, justice reform, and forensic science and the challenges that face those that have been erroneously convicted. The conversation also explores the challenges that forensic scientists face in these areas and steps that they can take to ensure neutrality and that justice is served.

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Join Glenn Langenburg and Eric Ray in Reno, NV for the 2019 International Association for Identification conference. We are joined by Becca Coutant, Carey Hall, Nicole Praska, Claudine Carter Pereira, and Jason Jardine and cover a number of topics including limited examinations, defense attorney perspectives, conclusion terminology, blood prints, management, and stats. There's even a little story of Glenn losing his cool and an out-take for the blooper reel. The conference was fantastic, and big thanks to all of the new listeners that we met during the week.

To celebrate 200+ episodes, an old photo of Glenn with John Vanderkolk is included.

Eric Ray and Glenn Langenburg review a new paper that's been long in the making. "The permanence of friction ridge skin and persistence of friction ridge skin and impressions: A comprehensive review and new results" by Monson, et al. was recently published in Forensic Science International. The paper details the persistence and permanence of 1st, 2nd, and 3rd level detail over multiple years. There are important takeaways from the paper although it isn't quite the level of the FBI/Noblis papers. So let's see what the guys think.

Eric Ray was recently teaching in Idaho (the ID state) and had the opportunity to sit down with Nick Craven, Katlyn Shelar, Whitney Betzel, and Tara Koho and talk with them about topics ranging from latent print exclusions, AFIS candidate lists, and the future of statistical models. Glenn Langenburg then joins Eric to continue the discussion with some follow-up points and continuing the conversation further into Exclusion policies and requirements, the nature of risk, and a preview on how to use a 5 Conclusion scale.

Eric Ray and Glenn Langenburg discuss the new article from Austin Hicklin, Brad Ulery, Tom Busey, and company researching latent print examiners with eye tracking equipment. Gaze behavior and cognitive states during fingerprint target group localization was published in Cognitive Research and examines what we look at and how context plays a huge part in this process. Download the paper online and follow along as we explore a great new paper.

EPISODE 200!!! - Eric Ray and Glenn Langenburg celebrate the big number 200 with an overseas interview with Australian latent print examiner and friend of the show, Michael Whyte. The guys talk forensics down under, some of the travels, teaching, and technology that Michael is involved with and announce DoubleLoopPodcast.com. Check it out, and let us know how we can make it even better.

Eric and Glenn return from a couple weeks off of crazy travels with a few stories from the road including a "Men Who Love My Little Pony" ("Bronies") cosplay conference. In this episode, the guys sit down for a fantastic interview with Duke Law Professor Brandon Garrett to discuss his and colleagues' recent juror study. The most recent paper provides fingerprint proficiency test results to mock jurors to see how this information may impact their decision making and how reliable they believe fingerprint evidence to be.

Eric Ray and Glenn Langenburg start the show talking about some exciting new classes that they have developed. Then they discuss which is more correct: 2009 "NRC" Report or "NAS" Report. Finally, they describe the available facts in the recent Archie Williams Innocence Project exoneration case. He was freed after 36 years in prison for rape based on eyewitness identifications, but an AFIS hit now implicates another person.

Glenn and Eric start with a brief chat about ethics and the recent JFI letter regarding testing and studies involving human subjects. They then jump into the main discussion on the "Review of Several False Positive Error Rate Estimates for Latent Fingerprint Examination Proposed Based on the 2014 Maimi-Dade Police Department Study" by Madeline Ausdemore, Jessie Hendricks, and Cedric Neumann. The review found that the data best fit a model of two error rates: one for when the true match is not present and one where the true match is one of the individuals presented. The article concludes with follow-up letters to the JFI from Igor Pacheco, Brian Cerchiai, Stephanie Stoiloff, Glenn Langenburg, Jonathan Koehler, Carey Hall, and Brendan Max. This episode is sponsored by GO EVIDENCE.

Eric Ray and Glenn Langenburg discuss post-Laura Interview thoughts after last episode's "lay person" interview. They tie in a new paper surveying mock-jurors, published by Gianni Ribeiro from Australia. Later, Gianni calls in from Oz to discuss her research. Oh, and Eric and Glenn both come up with genius ideas this episode.