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Assessing different levels of evidence in forensic speaker comparison

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Rhodes, R. and Hughes, V. (2018) Assessing different levels of evidence in forensic speaker comparison. Paper presented at IAFPA 2018, University of Huddersfield. 29 July-1 August 2018.

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Assessing different levels of evidence in forensic speaker comparison

  1. 1. Assessing different levels of evidence in forensic speaker comparison Richard Rhodes & Vincent Hughes
  2. 2. level 1 - group(s) level categorisation level 2 - individual level assessment of features Inference may be based on either level, but both is better We prefer a model with only one conclusion Ability to assess value of each level depends on each case, and available information Level 1 assumptions must be made clear in reports Level 1 categorisations require skills and training in socio- phonetics this is more than a screening exercise this stage requires validation and greater research focus this also means that it is the expert’s responsibility to assess level 1

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