Podcasts by Double Loop Podcast
Whether you're a practicing Latent Print Examiner or you're interested in forensics and true crime, the Double Loop Podcast is a weekly show featuring Glenn Langenburg and Eric Ray discussing latent print topics, current events in forensic science, the newest research articles, interesting guests, and analysis of notable cases from a forensic scientist perspective.
Further podcasts by Glenn Langenburg and Eric Ray
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Episode 260 - Tales from the Courtroom from 2023-11-26T00:00
Eric and Glenn return with a super-sized episode where they trade courtroom stories. Glenn had two cases in 2023 where the judges and decisions were rather surprising. From being hurried, harried...
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Episode 259 - The 2023 IAI Conference from 2023-09-23T00:00
Eric and Glenn share their adventures at the 2023 International Association for Identification conference held in August in National Harbor, MD in the Washington D.C. area. They discuss various le...
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Episode 258 - Gap Science Interview from 2023-09-15T07:50:55
Eric Ray and Glenn Langenburg are at the 2023 IAI conference in National Harbor, MD with Erin West and Ashley Church of Gap Science. They've developed a series of classes and an entire virtual conf...
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Episode 257 - Which Forensic Discipline Is The Most Reliable? from 2023-08-14T00:00
To start the episode, Glenn tells Eric a story relating to Edmond Locard and Galdino Ramos, a doctor with an interesting connection to the history of fingerprints. Later in the episode the guys ta...
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Episode 256 - Tom Busey - CSDIAI from 2023-07-20T07:39:25
Glenn Langenburg and Eric Ray bring the podcast to the California State Division of the IAI. Tom Busey joins the panel, and they discuss one of Tom's recent papers on an alternate method for calcul...
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Episode 255 - Busey Visual Evidence Paper from 2023-06-12T18:53:33
Eric Ray and Glenn Langenburg discuss the recent article from Tom Busey - Tracking the growth of visual evidence in fingerprint comparison tasks. Examiners were shown features one at a time and ask...
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Episode 254 - NIST Latent Accuracy from 2023-04-03T05:11:52
Glenn Langenburg and Eric Ray eventually discuss the results of the recent NIST Evaluation of Latent Friction Ridge Technology. But first there are a couple of detours. Glenn discusses recent testi...
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Episode 253 - Bigger Blacker Boxes from 2023-02-21T06:39:36
Eric Ray and Glenn Langenburg tackle three new Black Box / Accuracy studies from Austin Hicklin, et al and Noblis. Results from research into the accuracy of forensic handwriting comparison, footwe...
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Episode 252 - Alan McNamara Interview from 2023-02-08T08:34:59
Glenn Langenburg and Eric Ray are joined by Alan McNamara to continue discussing the case that sent him to jail. Alan shares his story from the day the police first knocked on his door through the ...
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Episode 251 - Alan McNamara Case - Part 2 from 2023-01-14T22:37:46
Eric Ray and Glenn Langenburg continue their discussion of the Alan McNamara case from the UK. This time they start with the trial and then go through many of the expert witnesses that got involved...
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Episode 250 - Alan McNamara Case - Part 1 from 2023-01-06T07:49:26
Glenn Langenburg and Eric Ray discuss the case of Alan McNamara from the UK. In this episode we cover the details of the burglary and how the police focused on Alan McNamara. Despite many issues in...
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Episode 249 - IAI 2022&Catch Up Episode from 2022-12-07T00:00
Eric and Glenn return from a hiatus to have a more relaxed catch-up episode. They share an adventure or two including the great Arizona Treasure Hunt that they participated in. Eric shares some e...
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Episode 248 - Dr. Henry Swofford Interview from 2022-08-11T00:00
Eric and Glenn interview returning guest, and newly minted PhD, Dr. Henry Swofford on his recent paper, with co-author Prof. Christophe Champod: “Probabilistic reporting and algorithms in forensic ...
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Episode 247 - Brianne Breedlove Interview from 2022-06-29T17:54:02
Glenn Langenburg and Eric Ray sit down with Brianne Breedlove from Uncover Forensics to discuss online training and how things have changed in professional forensic training over the past few years...
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Episode 246 - Stephan Cowans Case from 2022-05-07T00:00
Today, Eric and Glenn FINALLY review the Stephan Cowans case, a case of an erroneous identification from Boston where a fingerprint identification was critical evidence used to convict Cowans in 19...
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Episode 245 - Errors and CVs and Disclosure from 2022-03-31T07:34:55
Eric Ray and Glenn Langenburg go round and around on the topic of how to disclose errors to defense. Should your errors be listed in your CV? Should they be disclosed to defense automatically? Only...
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Episode 244 - Hillary Moses Daluz Interview from 2022-02-05T00:00
In this episode, the guys interview fingerprint examiner, multi-book author, and instructor, Hillary Moses Daluz . Hillary discusses her new book "Courtroom Testimony for the Fingerprint Examiner"...
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Episode 243 - New Years Grab Bag from 2022-01-31T08:10:47
Eric Ray and Glenn Langenburg catch up on a mix bag of topics in the first episode of 2022. Emails on the new conclusion proposal, setups for photography with transmitted light, and the main topic ...
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Episode 242 - Review of ASB Documents 2021 from 2021-12-27T00:00
In this episode, the guys talk about Thanksgiving: Eric’s amazing food preparation and Glenn’s travel to Canada to teach. Eric also gives a plug for Kasey Wertheim’s fingerprint book library that ...
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Episode 241 - Blind Proficiency Testing Paper from 2021-12-01T08:15:21
Eric Ray and Glenn Langenburg discuss the recent paper on Blind Proficiency Testing from the Houston Forensic Science Center: "Latent print quality in blind proficiency testing: Using quality metri...
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Episode 240 - Todd Weller returns to discuss inconclusives from 2021-10-21T00:00
The long awaited/dreaded return of the “Dad Joke Intro”! In this episode, Todd Weller (firearms expert) returns to the show to talk to Eric and Glenn about the article on inconclusive decisions by...
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Episode 239 - 2021 IAI Conference from 2021-09-27T01:14:42
Return with Glenn and Eric to the IAI Conference in Nashville, TN. The guys are joined by Josh Connelly, Kurt Aebersold, JP Rodriguez, and Claudine Carter Pereira. New accuracy studies, open field ...
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Episode 238 - Dror and Scurich Article from 2021-07-06T16:14:54
Glenn Langenburg and Eric Ray review the 2020 article from Itiel Dror and Nicholas Scurich. "(Mis)use of scientific measurements in forensic science" was published in Forensic Science International...
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Episode 237 - Testifying After an Error from 2021-04-25T23:45:37
Glenn Langenburg and Eric Ray discuss how to testify in court after an error occurs. Examiners nervous about upcoming testimony can find tips whether you made the error or a co-worker made an error...
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Episode 236 - Mindset Paper (Palms Part Deux!) from 2021-03-25T00:00
In this episode, the guys return for Round 2 with Dr. Heidi Eldridge and Prof. Christophe Champod. This time, they discuss the second paper arising from the palm print black box study (discussed i...
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Episode 235 - Todd Weller Interview from 2021-03-12T18:18:35
Glenn Langenburg and Eric Ray are joined by Todd Weller to discuss the firearms/toolmarks discipline. Todd was involved in the NY firearms case from Episode 227 and shares his experiences there. Th...
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Episode 234 - Palm Print Black Box Study from 2021-02-26T00:00
In this episode, Eric and Glenn are joined by Dr. Heidi Eldridge and Prof, Christophe Champod, the authors of "Testing the accuracy and reliability of palmar friction ridge comparisons - A black bo...
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Episode 233 - GYRO Accuracy Paper from 2021-02-16T07:52:33
Glenn Langenburg and Eric Ray finally get back on track with a review of a recent article on GYRO markings. "Evaluating the Accuracy and Weight of Confidence in Examiner Minutiae Annotations" was w...
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Episode 232 - Differing Conclusions Article from 2021-01-06T08:02:21
Glenn Langenburg and Eric Ray review the newest article from Austin Hicklin, Bradford Ulery, Madeline Ausdemore, and JoAnn Buscaglia. Why do latent fingerprint examiners differ in their conclusions...
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Episode 231 - Conclusion Scales Article from 2020-11-23T00:00
After some Halloween talk, Eric and Glenn discuss this episode’s research article: “The Utility of Expanded Conclusion Scales During Latent Print Examinations” by Carter, Vogelsand, Vanderkolk, and...
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Episode 230 - Fingerprint Error Rate in Close Non-Matches from 2020-10-28T00:00
In this Halloween episode, Eric and Glenn discuss a new paper published by Koehler and Liu titled “Fingerprint error rate on close non-matches” (Journal of Forensic Sciences, Sept. 2020). The pape...
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Episode 229 - Bob Garrett from 2020-10-13T07:17:38
Glenn Langenburg and Eric Ray pay special tribute this week to a giant in the fingerprint world, Bob Garrett. With the passing of Bob and a few other close friends and colleagues, Glenn and Eric wa...
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Episode 228 - Knuckle-Crease Daubert Hearing from 2020-09-16T00:00
In this episode, Glenn and Eric discuss a recent case Glenn was involved in: a knuckle-crease case. The case had a Daubert hearing in addition to trial testimony for jurors. The guys discuss if n...
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Episode 227 - NY Firearms Case from 2020-09-02T08:30:11
Glenn Langenburg and Eric Ray review a recent court decision on firearms testimony. NY v Ross was a recent Frye case where the testimony of firearms examiners was restricted to only class character...
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Episode 226 - Best Latent Print Books from 2020-07-20T06:28:24
Glenn Langenburg and Eric Ray were recently asked which latent print books they recommend the most. This episode they talk through the absolute creme de la creme of fingerprint tomes. New books, ol...
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Episode 225 - The Most Dangerous Animal of All Documentary from 2020-07-01T00:00
This week, the guys review and share their reactions to the documentary “The Most Dangerous Animal of All” (produced by Campfire Productions and available now on F/X and Hulu). This is a story abo...
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Episode 224 - Forensics in the New Normal from 2020-06-16T07:46:08
Glenn Langenburg and Eric Ray take a break from normal interviews and research reviews to host a laid-back happy hour discussion on how things have been different in the past few months in forensic...
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Episode 215 - Aging Latent Prints from 2020-06-02T00:00
Eric and Glenn wrap up their “activity level series” by discussing two articles (Girod, et al. 2016; and Hinners, et al. 2020) which propose determination of aging of latent fingerprint residue. T...
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Episode 223 - Luke Ryan Interview - Mass Drug Scandal Part 3 from 2020-05-24T00:00
In the final and third part of the series on the Massachusetts drug scandals and Netflix documentary, we interview Luke Ryan, the defense attorney featured in the documentary and who represented se...
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Episode 222 - How to Fix a Drug Scandal Documentary - Part 2 from 2020-05-06T06:25:07
Eric and Glenn finish out their discussion of the new Netflix documentary “How to Fix a Drug Scandal” (2020). In this episode we switch our focus on the dry-labbing of drug tests by Annie Dookhan, ...
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Episode 217 - Forensic Movie Recommendations during COVID-19 from 2020-04-29T00:00
In the wake of COVID-19 and so many of us staying at home, we decided as an April Fools’ Episode to make a list of movies that we enjoy and feature an aspect of forensic science. Eric and Glenn ru...
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Episode 221 - How to Fix a Drug Scandal Documentary - Part 1 from 2020-04-27T00:00
In the first of two episodes, Glenn and Eric discuss Netflix’s “How to Fix a Drug Scandal” (2020), covering the actions and consequences of two Massachusetts drug chemists. In this episode, they m...
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Episode 220 - Blind QC Research at HFSC from 2020-04-20T00:00
In this episode, Eric and Glenn start the show discussing a few kind emails and reviews of this podcast. They also talk about a weekly social event online—an online Happy Hour on Discord for Laten...
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Episode 219 - David Camm Case - Part 2 from 2020-04-15T09:04:55
The case against David Camm is about to be turned on its head. Eric Ray and Glenn Langenburg continue the story with a second and third trial and the introduction of a mountain of evidence against ...
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Episode 218 - David Camm Case - Part 1 from 2020-04-07T00:00
In this multi-part series on the Indiana v. David Camm case, Eric and Glenn review the evidence over multiple episodes. In this first episode they review the evidence of the Prosecution and the fi...
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Episode 216 - OSAC Update and Travel Stories from 2020-03-19T06:40:47
Glenn Langenburg returns from international travels (just in time) and brings stories from distant lands of England and Minnesota. As the discussion turns to conclusions, Eric Ray brings an update ...
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Episode 214 - Simon Bunter Interview from 2020-02-24T11:39:10
Glenn Langenburg is joined by Simon Bunter from Keith Borer Consultants to discuss a number of cases where activity level propositions were key factors. Can a print survive after the surface is cle...
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Episode 213 - Anouk de Ronde Interview from 2020-02-04T04:03:52
Eric Ray and Glenn Langenburg are joined by Anouk de Ronde from the Amsterdam University of Applied Sciences to continue the discussion on activity level propositions. Anouk has published on how to...
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Episode 212 - Activity Level from 2020-01-15T00:00
In this episode Glenn and Eric dig into ‘activity level propositions’, which will start a series of episodes that takes a deep dive into this topic. We lay the groundwork for the topic by discussi...
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Episode 211 - OSAC&ASB Update from 2020-01-08T08:46:42
Eric Ray and Glenn Langenburg get passionate about policies. Stirred up about standards. PO'd about SDO's. After a quick refresher on how NIST, OSAC, AAFS, and ASB fit together in the Standards Dev...
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Episode 210 - Brendan Max Interview from 2019-12-15T00:00
In this episode, Glenn and Eric interview Brendan Max, Chief of the Cook County Public Defender Forensic Science Unit in Illinois. They discuss his new article “Assessing Latent Print Proficiency ...
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Episode 209 - Friction Ridge Process Map from 2019-12-09T01:24:47
Eric Ray and Glenn Langenburg talk through the latest document out of the OSAC Friction Ridge Subcommttee. Last month they released an updated, and detailed, process map for friction ridge examinat...
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Episode 208 - Review of Conflict Resolution Paper (Montani, et al.) from 2019-11-29T00:00
This episode, the guys review and discuss a paper about resolving conflict resolution from Montani, et al. titled “Resolving differing expert opinions” (Science&Justice 2019). They explore the nua...
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Episode 207 - AC Brogdon Interview from 2019-11-16T04:16:49
Eric Ray starts the show sharing some big news with Glenn Langenburg and the listeners. The guys are then joined by AC Brogdon, president of the California State Division of the IAI for an discussi...
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Episode 206 - OSAC FRS Standards for Conclusions from 2019-10-25T01:17:58
In this episode, Eric and Glenn tackle the 2018 proposed OSAC Friction Ridge Subcommittee (FRS) Standards for Conclusions. They review the entire document and provide the definitions for 5 conclus...
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Episode 205 - PNW Conference Panel from 2019-10-17T18:43:29
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 ...
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Episode 204 - 2019 IAI Conference from 2019-09-23T11:20:13
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 Perei...
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Episode 203 - FBI Persistency Paper from 2019-09-16T05:03:27
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 revie...
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Episode 202 - Idaho Interviews from 2019-08-21T10:48:20
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 fro...
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Episode 201 - Gaze Detection Article from 2019-07-25T11:47:14
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 cogni...
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Episode 200 - Michael Whyte Interview from 2019-07-11T11:55:26
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 for...
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Episode 199 - Brandon Garrett Interview from 2019-05-11T17:42:34
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 ...
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Episode 198 - Archie Williams Case from 2019-04-01T03:49:49
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,...
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Episode 197 - Review of Miami-Dade Error Rates from 2019-03-18T02:53:45
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 Sever...
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Episode 196 - Gianni Ribeiro Article and Interview from 2019-03-07T07:15:37
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 Aus...
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Episode 195 - Laura Keck Interview from 2019-02-22T05:21:04
Glenn Langenburg and Eric Ray interview friend-of-the-show, Laura Keck, and dive deep into how forensic evidence is interpreted by a lay person. Does one fingerprint identification vs. 13 fingerpri...
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Episode 194 - Melting Pot of Topics from 2019-02-14T05:42:04
Eric Ray shares some big news and then shares a story about the dictionary. Glenn Langenburg brings another Super Fan into the fold as the Double Loop Podcast website starts to come together and so...
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Episode 193 - Fingerprints for Investigative Leads from 2019-01-29T07:00:35
After arguing about the Mandela Effect, Glenn and Eric catch up on some email and discuss ANAB AR3125 7.8.1.2.2 and how this impacts reporting conclusions. Glenn talks about using verbal LRs to ex...
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Episode 192 - Mark Stolorow Interview from 2019-01-22T07:15:18
Glenn Langenburg and Eric Ray are proud to be joined by Mark Stolorow. Before his years guiding the creation of the OSAC and his days with NIST, he had a varied history getting kicked out of the ch...
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Episode 191 - Christophe Champod Interview from 2019-01-13T19:23:57
Eric Ray and Glenn Langenburg are joined for another episode discussing statistics and probabilities by Professor Christophe Champod from the University of Lausanne. Christophe takes us on a histor...
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Episode 190 - Gianni Ribeiro Interview (and OSAC) from 2018-12-30T20:31:24
Eric Ray and Glenn Langenburg interview Australian researcher Gianni Ribeiro at the December 2018 OSAC meeting in Phoenix, AZ. Gianni tells the guys about her research interests studying how juries...
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Episode 189 - Henry Swofford Interview from 2018-12-22T19:26:33
Glenn Langenburg and Eric Ray are joined in-person by Henry Swofford as they discuss his career with the Army Crime Lab and the development of FRStat, a model that produces a similarity score betwe...
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Episode 188 - Cedric Neumann Interview from 2018-12-10T16:10:19
Glenn Langenburg and Eric Ray are joined by Cedric Neumann to discuss all things statistical models, probabilities, likelihood ratios, Bayes factors, and more. Cedric discusses his history of resea...
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Episode 187 - Richard Ramirez from 2018-12-03T04:49:51
Eric Ray and Glenn Langenburg move into a discussion of a new case with the help of special guest Becki Daher. Richard Ramirez, the Night Stalker, terrorized California in the mid-1980's before he ...
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Episode 186 - Making a Murderer - S2 - Part 4 from 2018-11-27T08:24:31
Eric Ray and Glenn Langenburg wrap up the final episode in their series on Making a Murderer Season 2 with all of the craziness that didn't fit in all the previous episodes. Doesn't the bloodstain ...
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Episode 185 - Making a Murderer - S2 - Part 3 from 2018-11-15T14:50:43
Eric Ray and Glenn Langenburg start to wrap up this second season of Making a Murderer with a discussion of the other new suspects in the case, a bit of internet drama, and the vast Wisconsin consp...
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Episode 184 - Making a Murderer - S2 - Part 2 from 2018-11-08T14:53:20
Glenn Langenburg and Eric Ray spend this episode talking about even more of the forensic evidence from the second season of Making a Murderer. They start with a review of the DNA evidence from the ...
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Episode 183 - Making a Murderer S2 - Part 1 from 2018-11-02T04:29:28
Glenn Langenburg and Eric Ray delve into the second season of Making a Murderer. They start by reviewing the evidence that they had discussed from the first season and then discuss their impression...
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Episode 182 - Tucson Prime Time Rapist from 2018-10-23T18:11:16
Glenn Langenburg and Eric Ray are joined by John Swartz, retired from the Tucson Police Department, for a discussion on the Prime Time Rapist case from the mid-1980's. John talks about how the seri...
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Episode 181 - Fingerprint Analogies from 2018-10-16T14:48:22
Eric Ray and Glenn Langenburg begin the episode with a discussion of an article from a law journal by Barbara Spellman titled, Communicating Forensic Evidence: Lessons from Psychological Science. A...
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Episode 180 - IAI Recertification Test from 2018-10-09T14:20:24
Glenn Langenburg and Eric Ray report on a heated and controversial topic that caught the attention of the latent print world in the summer of 2018, the re-designed IAI Re-Certification test. Every ...
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Episode 179 - IDEMIA Case AFIS from 2018-09-29T04:48:40
Glenn Langenburg and Eric Ray interview Teresa Wu from IDEMIA about the new product launch of IDEMIA's Case AFIS. The new system can quickly scan in exemplar prints from any type of standard or non...
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Episode 178 - The Staircase - Part 4 from 2018-09-24T06:52:29
Glenn Langenburg and Eric Ray try to wrap up any final discussion points from The Staircase docu-series. After Michael Peterson's conviction was overturned and a new trial was ordered, new attorney...
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Episode 177 - The Staircase - Bart Epstein Interview from 2018-09-13T06:03:33
Glenn Langenburg and Eric Ray are graciously joined by Bart Epstein in an interview about bloodstain and other forensic evidence from the trial of Michael Peterson in the death of Kathleen Peterson...
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Episode 176 - The Staircase - Part 2 from 2018-09-07T08:08:48
In our second dive down The Staircase, Eric Ray and Glenn Langenburg start looking closely at all of the forensic evidence available in the case and what it all means. The documentary leaves lots o...
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Episode 175 - The Staircase - Part 1 from 2018-09-04T14:53:57
Eric Ray and Glenn Langenburg focus their forensic science backgrounds on the infamous Kathleen Peterson murder as it was portrayed in The Staircase. The guys review their initial impressions of th...
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Episode 174 - 2018 IAI Conference from 2018-08-14T07:18
Glenn Langenburg and Eric Ray return to the annual IAI conference in San Antonio to talk to attendees about the interesting lectures and workshops that they've seen this year. Morgan Hays from Flor...
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Episode 173 - AAAS Report - Final Word from 2018-08-09T05:57:59
Glenn Langenburg and Eric Ray wrap up the three-part discussion on the AAAS Report on the Quality and Gap Analysis of Latent Fingerprint Examination. Surprisingly, the guys agree with many of the r...
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Episode 172 - AAAS Report and Carey Hall Interview from 2018-07-24T07:35:25
Glenn Langenburg and Eric Ray continue the discussion on the pros and cons of the AAAS report. Carey participated with the review of the report and discusses the positive recommendations and the li...
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Episode 171 - AAAS Report and John Black Interview from 2018-07-23T01:08:26
Glenn Langenburg and Eric Ray finally get around to discussing the report on latent fingerprint comparisons from the American Association for the Advancement of Science. John Black (from Black and ...
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Episode 170 - Della Wilkinson Interview from 2018-07-13T22:42:43
Glenn Langenburg and Eric Ray are joined by Della Wilkinson from Canada to discuss the final resolution of the Bornyk case from British Columbia. Originally, Judge Funt (see Double Loop Podcast epi...
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Episode 169 - Simon Cole Interview from 2018-07-05T20:37:46
Eric Ray sits down for an interview with Simon Cole from the University of California Irvine. Simon explains how he first became interested in forensics and in latent print comparisons in general, ...
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Extra Episode 01 - Dandridge Comparisons from 2018-07-04T18:44:41
Glenn Langenburg and Eric Ray continue their interview with Matt Marvin from Ron Smith and Associates about the erroneous identifications and eventual exoneration of Beniah Alton Dandridge. This vi...
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Episode 168 - 2017 Florida Conference from 2018-06-06T23:02:31
Eric Ray hosts a live Double Loop Podcast discussion at the 2017 Florida Division IAI Conference in Panama City Beach, FL, and Glenn Langenburg joins via phone for the discussion. The audience hit ...
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Episode 167 - Matt Marvin Interview from 2018-05-28T22:06:28
Eric Ray and Glenn Langenburg are joined by Matt Marvin of Ron Smith and Associates to discuss in greater detail the details of the Beniah Dandridge case. Matt discusses how he and RSA got involved...
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Episode 166 - Familial DNA from 2018-05-24T07:42:19
Eric Ray and Glenn Langenburg discuss two forensic cases that have been in the news in the past few years. First, the guys talk about the recent Golden State Killer case. How did DNA testing and ge...
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Episode 165 - Categorical vs. Probabilistic from 2018-05-18T07:44:39
Glenn Langenburg and Eric Ray tackle two articles in one fantastic episode. First, "Lay Understanding of 'Identification': How Jurors Interpret Forensic Identification Testimony" by Henry Swofford ...
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Episode 164 - Alicia Wilcox Interview - Part 2 from 2018-05-04T06:46:21
Eric Ray and Glenn Langenburg continue their discussion with Alicia Wilcox on her research into how juries hear forensic testimony. This time we focus even more on questions of opposing experts, er...
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Episode 163 - Alicia Wilcox Interview - Part 1 from 2018-04-27T05:58:37
Glenn Langenburg and Eric Ray join with Dr. Alicia Wilcox from Husson University in Bangor, Maine in a discussion of her research juries and their understanding of forensic testimony. Even though f...
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Episode 162 - Vos PCAST Article from 2018-04-16T07:33:17
Eric Ray and Glenn Langenburg discuss last year's article, Using the PCAST Report to Exclude, Limit, or Minimize Experts by Eric Alexander Vos published in Criminal Justice. We note the extreme bia...
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Episode 161 - Koehler Error Rate Article from 2018-04-06T22:49:49
Glenn Langenburg and Eric Ray follow up from last week's discussion of Glenn's recent Daubert hearing with a 2016 article from Jonathan Koehler entitled, Intuitive Error Rate Estimates for the Fore...
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Episode 160 - Daubert Challenge Recap from 2018-03-28T23:31:48
Glenn Langenburg and Eric Ray return after another hiatus to share travel stories and then to discuss a Daubert hearing that Glenn recently testified in. Short version: having all this new research...
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Episode 159 - Anja Einseln Interview - Part 2 from 2017-12-06T04:57:24
Glenn Langenburg and Eric Ray continue their interview with Anja Einseln regarding the merger of ASCLD-LAB and ANAB. Validation of methods and reasons for labs to choose accreditation are some of t...
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Episode 158 - Anja Einseln Interview - Part 1 from 2017-11-13T07:59:42
Glenn Langenburg and Eric Ray first revisit a couple of additional aspects of our previous discussion on defense interviews in Illinois before diving into the deep end of accreditation. Anja Einsel...
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Episode 157 - ANAB Accreditation from 2017-10-06T04:22:50
Eric and Glenn tackle a topic that will be a major concern of labs across the country in the next few years, the merger of ASCLD-LAB and ANAB. Some of the changes include the elimination of Latent ...
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Episode 156 - 2017 ICFIS - Part 2 from 2017-09-24T21:45:22
Glenn and Eric continue to discuss the 2017 International Conference on Forensic Inference and Statistics. This time Glenn tells about some troubling trends emerging from Illinois where forensic sc...
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Episode 155 - 2017 ICFIS - Part 1 from 2017-09-14T06:18:29
Glenn discusses the recent 2017 International Conference on Forensic Inference and Statistics that was held in Minnesota. Specifically, Glenn helped lead a project that looked at how lay people fro...
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Episode 154 - 2017 IAI Conference Recap from 2017-08-29T05:43:32
Glenn and Eric catch up on how things went at the 2017 IAI Educational Conference in Atlanta, Georgia. Glenn covers a panel discussion on the appropriate use of identification, a new workshop of th...
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Episode 153 - Austin Interviews from 2017-08-27T00:33:30
Eric sits down with Amanda, Harres, Vanessa, Jack, and Judith from the Austin Exclusionology class to talk about latent print topics and to ask questions back at the Double Loop Podcast. Glenn late...
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Episode 152 - Sandy Siegel Interview from 2017-06-25T05:04:59
Eric and Glenn sit down for an interview with Sandy Siegel and are also joined by a crew of Texas examiners (and one from San Diego). Sandy talks about her start in the field, her time in Austin, a...
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Episode 151 - Theresa Stotesbury Interview from 2017-06-06T04:27:53
Glenn Langenburg and Eric Ray follow some good advice from Niki Osborne and interview Dr. Theresa Stotesbury from Trent University in Ontario. Theresa has developed a synthetic blood substitute usi...
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Episode 150 - Workplace Stress Article from 2017-06-01T06:04:03
Glenn Langenburg and Eric Ray read through a new paper from Amy Jeanguenat and Itiel Dror on how workplace stress can affect forensic decision making. The paper makes several great points about how...
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Episode 149 - White Box Exclusion paper from 2017-05-24T21:40:22
Eric Ray and Glenn Langenburg delve deep into the data from the White Box and Black Box studies regarding the exclusion decision. Ulery, Hicklin, Roberts, and Buscaglia publish on their exclusion d...
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Episode 148 - FBI's New Approach from 2017-05-15T21:18:29
Glenn Langenburg and Eric Ray share exciting and groundbreaking news! The FBI latent print unit has officially moved beyond Approach 1. Their examiners may now utilize the inconclusive decision eve...
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Episode 147 - Niki Osborne Interview from 2017-05-05T03:35:06
Glenn Langenburg sits down and interviews Niki Osborne about her work in New Zealand and at the University of California - Irvine in examining how contextual information can influence forensic opin...
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Episode 146 - Caroline Gibb Interview from 2017-04-29T23:23:31
Glenn Langenburg and Eric Ray interview Caroline Gibb about her experiences coming up in the latent print field in Australia. LEARN about a woman's obsession with fingerprints from an early age! TH...
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Episode 145 - DFSC Stats&NCFS Ends from 2017-04-28T04:54:27
Eric Ray and Glenn Langenburg get back into the swing of things with big news in the spring of 2017. The Defense Forensic Science Center (Army Crime Lab) just released a statement saying that their...
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Episode 144 - Jay Kadane Article from 2017-03-27T07:01:54
Eric Ray and Glenn Langenburg review an article in Forensic Magazine that discusses the presentation that Jay Kadane gave at the American Association of Forensic Scientists conference this year. Th...
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Episode 143 - 2017 IAI Position Statement from 2017-02-26T21:31:58
Eric Ray and Glenn Langenburg work their way through the newest position statement from the International Association for Identification. Does it allow examiners to say whatever they want? Is it to...
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Episode 142 - Forensic Science Fair Project Ideas from 2017-01-31T04:49:50
Eric Ray and Glenn Langenburg take an idea from a listener and talk about ideas for science fair projects that feature forensic science! The guys explore ideas in fingerprints but also firearms, ha...
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Episode 141 - Goodwin-Bey Case from 2017-01-17T05:24:49
Eric and Glenn discuss a few emails before delving into a little more on the PCAST report and its impact on the MO v. Goodwin-Bey case. Firearms evidence linked Goodwin-Bey to a quadruple homicide,...
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Episode 140 - Mackenzie de la Hunty Interview from 2017-01-01T08:38
Glenn sits down with Mackenzie de la Hunty at the 2016 Australia New Zealand Forensic Science Society conference in Auckland, New Zealand to discuss her research into Physical Developer. There is d...
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Episode 139 - PCAST Report from 2016-12-28T08:37:04
Eric Ray and Glenn Langenburg catch up after an extended hiatus and then review the recent PCAST report. The President's Council of Advisors on Science and Technology issued a scathing report calli...
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Episode 138 - Dassey Appeal from 2016-11-21T23:35:45
Glenn and Eric first cover the new resolution that came out of the IAI 2016 Conference. They then perfectly segue into a conversation on the recent decision to order the release or retrial of Brand...
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Episode 137 - 2016 IAI Conference from 2016-10-03T18:01:35
Eric Ray hosts the Double Loop Podcast panel discussion at the 2016 IAI Conference in Cincinnati with Glenn Langenburg joining in remotely. Panelists Henry Swofford, Jessica Cino, and Jeniffer Moli...
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Episode 136 - 2016 IAI Conference Interviews from 2016-09-19T01:59:11
Eric is joined by guest co-host Heidi Eldridge in interviewing Hughes Dicaire from Ontario and Christina Amendola and Jenna Alimberti from Massachusetts on interesting lectures and workshops from t...
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Episode 135 - Lisa Steele Interview from 2016-09-06T07:35:37
Glenn Langenburg and Eric Ray interview Lisa Steele about lawyer stuff, current fingerprint issues, Chicago cases, and just generally get an attorney's perspective on latent prints and forensic evi...
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Episode 134 - OJ Simpson - Part 2 from 2016-08-18T20:41:21
Glenn Langenburg and Eric Ray finish their discussion of the OJ Simpson trial, the FX OJ dramatization, and the OJ 30 for 30. Mark Fuhrman, Lance Ito, Dennis Fung and all the rest, and how the clim...
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Episode 133 - OJ Simpson - Part 1 from 2016-08-01T08:45:39
After the success and interest of Making a Murderer episodes, Glenn and Eric travel back to the 90s to discuss the physical evidence from the murders of Nicole Brown and Ron Goldman and the trial o...
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Episode 132 - White Box Paper III from 2016-07-19T03:35:55
Glenn Langenburg and Eric Ray discuss the most recent paper from the Noblis team (Bradford Ulery, Austin Hicklin, Maria Roberts, and JoAnn Buscaglia) from the data collected in the White Box study....
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Episode 131 - Weight of Evidence from 2016-07-05T01:45:39
Glenn and Eric listened to the online recordings of the NIST Technical Colloquium Quantifying the Weight of Forensic Evidence. The presentations brought up lots of questions on how forensic scienti...
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Episode 130 - Universal Language for Testimony and Reports from 2016-06-14T06:30:47
Glenn and Eric take a look at the newly proposed draft documents from the Department of Justice. These documents seek to provide universal language for testimony and reports for multiple forensic d...
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Episode 129 - Making a Murderer - Part 5!? from 2016-06-07T16:19:04
Glenn and Eric received some more emails about the Avery case and fill out yet another episode with the topic. They even manage to debunk a fingerprint myth from the case.
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Episode 128 - Far East Travels from 2016-05-24T05:18:36
Eric wastes almost an entire episode talking about teaching the Exclusionology class in Taipei, Taiwan and then visits Tokyo on the way back. Glenn adds in a bit about travels to Canada.
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Episode 127 - Ontario Interviews from 2016-05-10T05:34:36
Eric (along with Penny Dechant) interviews Melissa, Nicole, and Jackie who all recently attended the Exclusionology class in Ontario, CA.
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Episode 126 - Chicago Motions from 2016-05-03T05:58:06
Glenn and Eric delve into a couple of recent cases involving Chicago PD where defense attorneys have filed motions challenging the admission of latent print evidence.
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Episode 125 - Making a Murderer (Part 4?) from 2016-03-10T16:40:11
Glenn and Eric read a couple of emails from non-examiners that came across our Making a Murderer episodes. We ended up spending this whole episode talking about the ideas and comments from those em...
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Episode 124 - Making a Murderer Questions from 2016-02-27T07:42:27
Glenn and Eric answer some questions from an email that came in after the Making a Murderer episodes. Is all the extra time used to shield ourselves from bias worth the effort? Do the fact-finders ...
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Episode 123 - Conclusion Testimony from 2016-02-16T06:49:35
Eric and Glenn start with a quick review of recent topics from the 2016 OSAC meeting. They then discuss a couple of recent court cases. First, the recent DC Court of Appeals decision in the Marlon ...
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Episode 122 - Making a Murderer - Part 2 from 2016-02-07T17:40:52
Eric and Glenn continue their discussion of the popular Netflix documentary including further discussions of the physical evidence, the EDTA test, things not discussed in the documentary, and the e...
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Episode 121 - Making a Murderer - Part 1 from 2016-02-01T07:24:03
Glenn and Eric start a two-part podcast discussion on the twisty case of Stephen Avery, now an extremely popular documentary on Netflix. As they wind their way through this very interesting case, t...
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Episode 120 - Article - Strength of Conclusion from 2016-01-26T05:09:41
Glenn and Eric discuss a recent article published by Michele Triplett titled, Complexity, Level of Association, and Strength of Fingerprint Conclusions. The guys express their opinions on the stren...
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Episode 119 - Brian Orr Interview - VMD from 2016-01-20T14:31:24
Glenn and Eric interview Brian Orr with Go Evidence about the vacuum metal deposition technique. Brian and Glenn each share some success stories with VMD and Brian describes how the process works a...
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Episode 118 - Melissa Neylon Case from 2016-01-10T19:59:40
Glenn and Eric first take a long detour to discuss their initial reactions to the newest Star Wars movie (of course), but then talk about a fingerprint identification error involving Melissa Neylon...
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Episode 117 - Hodge Podge #6 from 2016-01-04T06:19:28
Glenn and Eric throw out a number of topics including how the podcast helps to solve crime and discussions from OSAC meetings.
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Episode 116 - Couple of Papers from 2015-12-20T21:54:54
Eric and Glenn each discuss a paper that they were involved with recently. Eric and the IAI Subcommittee on Probability Modeling published a short article in the ID News summarizing current and fut...
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Episode 115 - Beyond Identification from 2015-12-07T01:19:04
Glenn and Eric talk about a new document released by the Defense Forensic Science Center. That agency has decided to forego using the Identification term when reporting the association of a latent ...
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Episode 114 - How Many Candidates? from 2015-12-02T06:32:37
Glenn and Eric bring up a listener email asking how many candidates examiners should request during AFIS searches. And further, are examiners prepared to compare the increasing number of close non-...
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Episode 113 - Madrid Error - Part 3 from 2015-11-22T23:05:41
Eric and Glenn complete their series on the Madrid Bombing Fingerprint Error from the FBI. Even more than 10 years after the error was revealed, there are still very interesting things to learn abo...
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Episode 112 - Madrid Error - Part 2 from 2015-11-12T03:43:02
Glenn and Eric continue through the timeline of the Madrid Error or the Brandon Mayfield erroneous fingerprint identification. The guys learn all sorts of new things from the full OIG report that s...
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Episode 111 - Madrid Error - Part 1 from 2015-11-11T04:24:49
Glenn and Eric begin a 3-part review of the full report from the Office of the Inspector General (OIG) on the Madrid Bombing or Brandon Mayfield error from the FBI. This episode starts with a gener...
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Episode 110 - Processing and Photos from 2015-11-02T02:56:05
Eric tells Glenn about his recent Arizona Treasure Hunt. The guys then get into a discussion on latent print processing and photography. Do you take photos after each step? After the last step? Onl...
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Episode 109 - Point Counting (and Alice) from 2015-10-27T08:26:16
Eric starts this episode by doing a short interview with Alice Maceo about her class and some recent adventures. Glenn and Eric then discuss an email asking about setting a point threshold for suff...
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Episode 108 - Alabama Erroneous ID from 2015-10-16T02:32:16
Eric and Glenn talk through the recent news that Beniah Dandridge was wrongly convicted for murder and has served 19 years in an Alabama prison after an erroneous fingerprint identification and oth...
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Episode 36 - Teresa Wu Interview from 2014-05-06T07:14:42
Glenn and Eric interview Teresa Wu from 3M/Cogent about the company and new research into preventing errors and statistical models. This episode sponsored by 3M / Cogent
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Episode 04 - Who the Hell Are Glenn and Eric - Part 2 from 2013-09-17T04:10:09
Eric interviews Glenn about how he got started in latent prints and his favorite time teaching. The guys then discuss regional differences in the latent print field including terms, definitions, an...
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Episode 03 - Who the Hell are Glenn and Eric - Part 1 from 2013-09-10T04:59:21
Glenn and Eric discuss the McCluskey case out of New Mexico involving testimony on identification to the exclusion of all others, an article on how forensic labs are paid per conviction from the Hu...
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