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The effects of alcohol intoxication on accuracy and the confidence-accuracy relationship in photographic simultaneous lineups

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posted on 06.06.2017 by Heather Flowe, Melissa Colloff, Nilda Karagolu, Katarzyna Zelek, Hannah L. Ryder, Joyce E. Humphries, Melanie K. Takarangi
Acute alcohol intoxication during encoding can impair subsequent identification accuracy, but results across studies have been inconsistent, with studies often finding no effect. Little is also known about how alcohol intoxication affects the identification confidence-accuracy relationship. We randomly assigned women (n=153) to consume alcohol (dosed to achieve a 0.08% BAC) or tonic water, controlling for alcohol expectancy. Women then participated in an interactive hypothetical sexual assault scenario and, twenty-four hours or seven days later, attempted to identify the assailant from a perpetrator present or a perpetrator absent simultaneous lineup and reported their decision confidence. Overall, levels of identification accuracy were similar across the alcohol and tonic water groups. However, women who had consumed tonic water as opposed to alcohol identified the assailant with higher confidence on average. Further, calibration analyses suggested confidence is predictive of accuracy regardless of alcohol consumption. The theoretical and applied implications of our results are discussed.

Funding

This research was funded by an Economic and Social Research Council grant award (ES/J005169/1)

History

School

  • Sport, Exercise and Health Sciences

Published in

Applied Cognitive Psychology

Citation

FLOWE, H. ...et al., 2017. The effects of alcohol intoxication on accuracy and the confidence-accuracy relationship in photographic simultaneous lineups. Applied Cognitive Psychology, 31 (4), pp. 379–391

Publisher

Wiley / © The Authors

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/

Acceptance date

04/05/2017

Publication date

2017

Notes

This is an open access article published by Wiley and distributed under the terms of the Creative Commons Attribution Licence, https://creativecommons.org/licenses/by/4.0/

ISSN

1099-0720

Language

en

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