An alternative statistical framework for measuring proficiency

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2023-08-22
Authors
Luby, Amanda
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Center for Statistics and Applications in Forensic Evidence
Abstract
Item Response Theory, a class of statistical methods used prominently in educational testing, can be used to measure LPE proficiency in annual tests or research studies, while simultaneously accounting for varying difficulty among comparisons. Using black box studies in latent prints, we illustrate the strengths of an IRT-based analysis over traditional “percent correct” scoring, focusing on inferences about individual comparisons and how inconclusives can be treated outside of the error rate framework.
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This presentation is from the 107th International Association for Identification (IAI) Annual Educational Conference, National Harbor, Maryland, August 20-26, 2023. Posted with permission of CSAFE.

Copyright 2023, The Authors.
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