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NIST Statistician Urges Greater Transparency in Expert‑Witness Methods
Summary
Steve Lund, a statistician in NIST's Statistical Engineering Division, said experts should show how methods perform on known cases and explain uncertainties so judges and juries can better assess evidence interpretation.
Steve Lund, a statistician in the National Institute of Standards and Technology(NIST) Statistical Engineering Division, urged forensic practitioners to make the basis of expert-witness conclusions more transparent during a plenary presentation on statistical analysis and evidence interpretation.
Lund opened by reminding the audience that his remarks represented his personal views, "and do not represent any official policies or perspectives of NIST," and said the overarching goal for expert testimony should be to minimize wrongful convictions and false acquittals. He told the room that because there is no direct empirical path to measure that outcome, practitioners must emphasize secondary safeguards: clear methods, demonstrable performance…
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