Deconstructing Probability in The Case <i>R. V. Deen</i>

in Truth Machine

Published by University of Chicago Press

Published in print January 2009 | ISBN: 9780226498065
Published online March 2013 | e-ISBN: 9780226498089 | DOI:
Deconstructing Probability in The Case R. V. Deen

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  • History of Science and Technology


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This chapter, which examines the interrogations of expert witnesses and the techniques for building up and attacking credibility, focusing on the Regina v. Deen, explains that this case was the first in which DNA evidence was successfully appealed in the United Kingdom and raised numerous issues of general interest. The case became notable for the “prosecutor's fallacy,” which applies to the way probability estimates are presented in testimony, and it also exposed a broader set of problems with interpreting DNA evidence and developing probability estimates.

Keywords: expert witnesses; credibility; Regina v. Deen; United Kingdom; DNA evidence; prosecutor's fallacy; probability estimates

Chapter.  11899 words. 

Subjects: History of Science and Technology

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