Document Details

Document Type : Article In Journal 
Document Title :
The factor of 10 in forensic DNA match probabilities
The factor of 10 in forensic DNA match probabilities
Document Language : English 
Abstract : An update was performed of the classic experiments that led to the view that profile probability assignments are usually within a factor of 10 of each other. The data used in this study consist of 15 Identifiler loci collected from a wide range of forensic populations. Following Budowle et al. [1], the terms cognate and non-cognate are used. The cognate database is the database from which the profiles are simulated. The profile probability assignment was usually larger in the cognate database. In 44%–65% of the cases, the profile probability for 15 loci in the non-cognate database was within a factor of 10 of the profile probability in the cognate database. This proportion was between 60% and 80% when the FBI and NIST data were used as the non-cognate databases. A second experiment compared the match probability assignment using a generalised database and recommendation 4.2 from NRC II (the 4.2 assignment) with a proxy for the matching proportion developed using subpopulation allele frequencies and the product rule. The findings support that the 4.2 assignment has a large conservative bias. These results are in agreement with previous research results. 
ISSN : 1872-4973 
Journal Name : Forensic Science International: Genetics 
Volume : 28 
Issue Number : 1 
Publishing Year : 1438 AH
2017 AD
Article Type : Article 
Added Date : Wednesday, May 17, 2017 


Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
Simone GittelsonGittelson, Simone InvestigatorDoctorate 
Tamyra R MorettiMoretti, Tamyra RResearcherDoctorate 
Anthony J OnoratoOnorato, Anthony JResearcherDoctorate 
Bruce BudowleBudowle, Bruce ResearcherDoctorate 
Bruce S WeirWeir, Bruce SResearcherDoctorate 
John BuckletonBuckleton, John ResearcherDoctorate 


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