Latent print quality in blind proficiency testing: Using quality metrics to examine laboratory performance

dc.contributor.author Gardner, Brett
dc.contributor.author Neuman, Maddisen
dc.contributor.author Kelley, Sharon
dc.contributor.department Center for Statistics and Applications in Forensic Evidence
dc.date 2021-06-29T18:22:47.000
dc.date.accessioned 2021-08-14T04:11:57Z
dc.date.available 2021-08-14T04:11:57Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2021
dc.date.issued 2021-07-01
dc.description.abstract <p>Calls for blind proficiency testing in forensic science disciplines intensified following the 2009 National Academy of Sciences report and were echoed in the 2016 report by the President’s Council of Advisors on Science and Technology. Both practitioners and scholars have noted that “open” proficiency tests, in which analysts know they are being tested, allow for test-taking behavior that is not representative of behavior in routine casework. This study reports the outcomes of one laboratory’s blind quality control (BQC) program. Specifically, we describe results from approximately 2.5 years of blind cases in the latent print section (<em>N</em> = 376 latent prints submitted as part of 144 cases). We also used a widely available quality metrics software (LQMetrics) to explore relationships between objective print quality and case outcomes. Results revealed that nearly all BQC prints (92.0%) were of sufficient quality to enter into AFIS. When prints had a source present in AFIS, 41.7% of print searches resulted in a candidate list containing the true source. Examiners committed <em>no</em> false positive errors but other types of errors were more common. Average print quality was in the midpoint of the range (53.4 on a 0-to-100 scale), though prints were evenly distributed across the <em>Good</em>, <em>Bad</em>, and <em>Ugly</em> categories. Quality metrics were significantly associated with sufficiency determinations, examiner conclusions, and examiner accuracy. Implications for blind testing and the use of quality metrics in routine casework as well as proficiency testing are discussed.</p>
dc.description.comments <p>The following article is published as Gardner, Brett O., Maddisen Neuman, and Sharon Kelley. "Latent print quality in blind proficiency testing: Using quality metrics to examine laboratory performance." <em>Forensic Science International</em> 324 (2021): 110823. Posted with permission of CSAFE.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/csafe_pubs/84/
dc.identifier.articleid 1083
dc.identifier.contextkey 23584891
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath csafe_pubs/84
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/dv6laO0z
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/csafe_pubs/84/Gardner_et_al.__2021___BQC.pdf|||Sat Jan 15 02:11:13 UTC 2022
dc.source.uri 10.1016/j.forsciint.2021.110823
dc.subject.disciplines Forensic Science and Technology
dc.subject.keywords latent prints
dc.subject.keywords blind proficiency testing
dc.subject.keywords Quality metrics
dc.subject.keywords Field study
dc.title Latent print quality in blind proficiency testing: Using quality metrics to examine laboratory performance
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isOrgUnitOfPublication d8a3c72b-850f-40f6-87c4-8812547080c7
File
Original bundle
Now showing 1 - 1 of 1
Name:
Gardner_et_al.__2021___BQC.pdf
Size:
189.59 KB
Format:
Adobe Portable Document Format
Description:
Collections