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Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/1081

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Title: Forensic science evidence in question
Authors: Redmayne, Mike
Roberts, Paul
Aitken, Colin
Jackson, Graham
Affiliation: University of Abertay Dundee. School of Contemporary Sciences
Keywords: Forensic evidence
Forensic science
Statistical evidence
Issue Date: 2011
Publisher: Sweet & Maxwell
Type: Journal Article
Refereed: peer-reviewed
Rights: This is the published version of this article. Reproduced by permission of the publisher. Published version (c)Sweet & Maxwell
Citation: Redmayne, M., et al. 2011. Forensic science evidence in question. Criminal Law Review. 5: pp.347-356
Abstract: How should forensic scientists and other expert witnesses present their evidence in court? What kinds and quality of data can experts properly draw on in formulating their conclusions? In an important recent decision in R. v T1 the Court of Appeal revisited these perennial questions, with the complicating twist that the evidence in question incorporated quantified probabilities, not all of which were based on statistical data. Recalling the sceptical tenor of previous judgments addressing the role of probability in the evaluation of scientific evidence,2 the Court of Appeal in R. v T condemned the expert’s methodology and served notice that it should not be repeated in future, a ruling which rapidly reverberated around the forensic science community causing consternation, and even dismay, amongst many seasoned practitioners.3 At such moments of perceived crisis it is essential to retain a sense of perspective. There is, in fact, much to welcome in the Court of Appeal’s judgment in R. v T, starting with the court’s commendable determination to subject the quality of expert evidence adduced in criminal litigation to searching scrutiny. English courts have not consistently risen to this challenge, sometimes accepting rather too easily the validity of questionable scientific techniques.4 However, the Court of Appeal’s reasoning in R. v T is not always easy to follow, and there are certain passages in the judgment which, taken out of context, might even appear to confirm forensic scientists’ worst fears. This article offers a constructive reading of R. v T, emphasising its positive features whilst rejecting interpretations which threaten, despite the Court of Appeal’s best intentions, to diminish the integrity of scientific evidence adduced in English criminal trials and distort its probative value.
URI: http://hdl.handle.net/10373/1081
ISSN: 0011-135X
Appears in Collections:Science Engineering & Technology Collection

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