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Faith in thy threshold

Curley, Lee J.; Murray, Jennifer; MacLean, Rory; Laybourn, Phyllis; Brown, David


Lee J. Curley

Phyllis Laybourn

David Brown


The current study focussed on the decision making processes of jurors. The study investigated how jurors make a decision, if they integrated information within their decision making process, and if cue utilisation thresholds promoted confirmation bias. To do this, 108 participants listened to one of nine cases. These participants were asked to give a likelihood of guilt rating after each piece of evidence, to state what was the last piece of information they needed to make a decision and give a final verdict at the end of a trial. The results highlighted that threshold decision making was being utilised, that information integration may allow thresholds to be reached and that thresholds may promote confirmation bias to reduce cognitive dissonance. In conclusion, this suggests that jurors integrate information until they reach a leading verdict, then the evaluation of information is distorted to support the leading threshold. Implications relate to von Dire and legal instructions.


Curley, L. J., Murray, J., MacLean, R., Laybourn, P., & Brown, D. (2018). Faith in thy threshold. Medicine, Science and the Law, 002580241879106.

Journal Article Type Article
Acceptance Date Jul 4, 2018
Online Publication Date Jul 31, 2018
Publication Date Jul 31, 2018
Deposit Date Aug 27, 2018
Publicly Available Date Aug 27, 2018
Journal Medicine, Science and the Law
Print ISSN 0025-8024
Electronic ISSN 2042-1818
Publisher SAGE Publications
Peer Reviewed Peer Reviewed
Pages 002580241879106
Keywords Decision Science; Confirmation Bias; Information Integration; Diffusion Threshold Model; Juror Decision Processes.
Public URL


Faith In Thy Threshold (550 Kb)

Copyright Statement
Curley, L. J., Murray, J., Maclean, R., Laybourn, P., & Brown, D. (in press). Faith in thy Threshold. Medicine, Science and the Law, ISSN 0025-8024 pp. xx-xx. Copyright © 2018 Reprinted by permission of SAGE Publications

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