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                            Library & Multimedia
 A review of likelihood ratios in forensic science based on a critique of Stiffelman "No longer the Gold standard: Probabilistic genotyping is changing the nature of DNA evidence in criminal trials"
NCJ Number
              301291
Journal

*Forensic Science International* Volume: 310 Dated: 2020
Author(s)
          J. Buckleton;
                        et al
Date Published

2020
Length
              1 page
Annotation
              Stiffelman provides a broad critique of the application of likelihood ratios (LRs) in forensic science, particularly their use in probabilistic genotyping (PG) software. These are discussed in this review.
Abstract
              LRs do not infringe on the ultimate issue. The Bayesian paradigm clearly separates the role of the scientist from that of the decision-makers and distances the scientist from comment on the ultimate and subsidiary issues. LRs do not affect the reasonable doubt standard. Fact-finders must still make decisions based on all the evidence, and they must do this considering all evidence, not just that given probabilistically. LRs do not infringe on the presumption of innocence. The presumption of innocence does not equate with a prior probability of zero but simply that the person of interest (POI) is no more likely than anyone else to be the donor. Propositions need to be exhaustive within the context of the case; i.e., propositions deemed relevant by either defense or prosecution which are not fanciful must not be omitted from consideration. (publisher abstract modified)
      
  
          Additional Details
Grant Number(s)
        2017-DN-BX-0136


  
  
        
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        Population Genetic Issues for Forensic DNA Profiles
    
  
  
Date Published: January 1, 2020
    
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                DNA (Deoxyribonucleic Acid)
        Probabilistic genotyping
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