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Research Article

Accuracy and reliability of forensic latent fingerprint decisions

Bradford T. Ulery, R. Austin Hicklin, JoAnn Buscaglia, and Maria Antonia Roberts
PNAS first published April 25, 2011 https://doi.org/10.1073/pnas.1018707108
Bradford T. Ulery
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R. Austin Hicklin
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JoAnn Buscaglia
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  • For correspondence: joann.buscaglia@ic.fbi.gov
Maria Antonia Roberts
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  1. Edited by Stephen E. Fienberg, Carnegie Mellon University, Pittsburgh, PA, and approved March 31, 2011 (received for review December 16, 2010)

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Abstract

The interpretation of forensic fingerprint evidence relies on the expertise of latent print examiners. The National Research Council of the National Academies and the legal and forensic sciences communities have called for research to measure the accuracy and reliability of latent print examiners’ decisions, a challenging and complex problem in need of systematic analysis. Our research is focused on the development of empirical approaches to studying this problem. Here, we report on the first large-scale study of the accuracy and reliability of latent print examiners’ decisions, in which 169 latent print examiners each compared approximately 100 pairs of latent and exemplar fingerprints from a pool of 744 pairs. The fingerprints were selected to include a range of attributes and quality encountered in forensic casework, and to be comparable to searches of an automated fingerprint identification system containing more than 58 million subjects. This study evaluated examiners on key decision points in the fingerprint examination process; procedures used operationally include additional safeguards designed to minimize errors. Five examiners made false positive errors for an overall false positive rate of 0.1%. Eighty-five percent of examiners made at least one false negative error for an overall false negative rate of 7.5%. Independent examination of the same comparisons by different participants (analogous to blind verification) was found to detect all false positive errors and the majority of false negative errors in this study. Examiners frequently differed on whether fingerprints were suitable for reaching a conclusion.

  • biometrics
  • error analysis

Footnotes

  • ↵1To whom correspondence should be addressed. E-mail: joann.buscaglia{at}ic.fbi.gov.
  • Author contributions: B.T.U., R.A.H., J.B., and M.A.R. designed research; B.T.U., R.A.H., J.B., and M.A.R. performed research; B.T.U. and R.A.H. contributed new analytic tools; B.T.U., R.A.H., J.B., and M.A.R. analyzed data; and B.T.U., R.A.H., J.B., and M.A.R. wrote the paper.

  • The authors declare no conflict of interest.

  • This article is a PNAS Direct Submission.

  • This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10.1073/pnas.1018707108/-/DCSupplemental.

Freely available online through the PNAS open access option.

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Accuracy and reliability of forensic latent fingerprint decisions
Bradford T. Ulery, R. Austin Hicklin, JoAnn Buscaglia, Maria Antonia Roberts
Proceedings of the National Academy of Sciences Apr 2011, DOI: 10.1073/pnas.1018707108

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Accuracy and reliability of forensic latent fingerprint decisions
Bradford T. Ulery, R. Austin Hicklin, JoAnn Buscaglia, Maria Antonia Roberts
Proceedings of the National Academy of Sciences Apr 2011, DOI: 10.1073/pnas.1018707108
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