p-Values should not be used for evaluating the strength of DNA evidence

M. Kruijver, R. Meester, K. Slooten

Research output: Contribution to JournalArticleAcademicpeer-review


Recently, p-values have been suggested to explain the strength of a likelihood ratio that evaluates DNA evidence. It has been argued that likelihood ratios would be difficult to explain in court and that p-values would offer an alternative that is easily explained. In this article, we argue that p-values should not be used in this context. p-Values do not directly relate to the strength of the evidence. The likelihood ratio measures the strength of the evidence, while the p-value measures how rare it is to find evidence that is equally strong or stronger, which is something fundamentally different. In addition, a p-value is not always unambiguous. To illustrate our arguments, we present several examples from forensic genetics.
Original languageEnglish
Pages (from-to)226-231
JournalForensic Science International : Genetics
Publication statusPublished - 2015

Bibliographical note

PT: J; NR: 38; TC: 2; J9: FORENSIC SCI INT-GEN; PG: 6; GA: CE6MZ; UT: WOS:000351952700035

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