Sampling Effects

John S. Buckleton, Duncan Taylor, Jo Anne Bright, James M. Curran

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review



It is usual to attach a numerical weight to a match between DNA obtained from a crime sample and DNA taken from a sample given by a suspect. In Chapter 2, we discussed the possibilities of using a frequency, an exclusion probability or a likelihood ratio (LR) for this purpose. A frequency or an exclusion probability is based on data and the result is termed an estimate. The fact that what is given is an estimate leads to the following question: Should this numerical estimate be a best estimate or should some consideration be given to the uncertainty in this estimate?
This is a matter where opinions in the forensic community differ.
Original languageEnglish
Title of host publicationForensic DNA Evidence Interpretation
EditorsJohn S. Buckleton, Jo-Anne Bright, Duncan Taylor
PublisherCRC Press
Number of pages22
EditionSecond Edition
ISBN (Electronic)9781482258929
ISBN (Print)9781482258899
Publication statusPublished - 2016
Externally publishedYes


  • DNA casework
  • Peter Gill
  • DNA analysis
  • Interpretation of test results
  • DNA frequencies
  • LCN (ultra trace) analysis
  • Non-autosomal (mito, X, and Y) DNA analysis


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