February Webinar: A Critical Review of the ACE-V Process
This webinar will deconstruct ACE-V into its individual stages of Analysis, Comparison, Evaluation, and Verification as applied to friction ridge examinations. We will examine the strengths and limitations of ACE-V with an eye towards existing research and data to better understand the decisions in which fingerprint experts are engaged during each stage of ACE-V. We will also explore recommended best practices and documentation tips, such as the GYRO system and blind verifications.
Attendees of this webinar will obtain the following learning objectives:
- An understanding of the inter-examiner variability during feature selection in the Analysis stage
- An understanding of how the GYRO documentation system can convey examiner confidence during the selection of features
- An understanding of the concept of “value” or “suitability”
- An understanding of the concept of “tolerance” and “correspondence”
- An understanding of the concept of “specificity” and “discriminability” of features
- An understanding of “source level propositions” and how the evidence may support these propositions
- Defining the conclusions that may be rendered (per SWGFAST)
- Examining best practices in the Verification stage
Glenn Langenburg is a certified latent print examiner at the Minnesota Bureau of Criminal Apprehension and also manages a consulting business (Elite Forensic Services, LLC). He has experience with crime scenes and bloodstain pattern evidence and he is certified as a general criminalist by the American Board of Criminalistics.
Glenn has a Ph.D. in Forensic Science from the University of Lausanne in Switzerland. His thesis, “A Critical Analysis and Study of the ACE-V Process”, focuses on decision-making and the application of ACE-V by fingerprint experts. Glenn has lectured and hosted workshops nationally and internationally at forensic science conferences in the United States, Canada, and Europe on topics including Daubert issues, research, probabilistic approach, error rates, and fingerprint methodology. He has published numerous research articles in peer reviewed journals. Glenn has the privilege of serving the fingerprint community as a member of SWGFAST (Scientific Working Group for Friction Ridge Analysis, Study, and Technology). He also co-hosts a weekly podcast,
“The Double Loop Podcast”, on fingerprint topics with Eric Ray. Most recently, Glenn has taken on a new role at the Minnesota BCA as a Forensic Science Supervisor of the Drug Chemistry Section.
Elite Forensic Services, LLC