Intoxicated eyewitnesses: The effect of a fully balanced placebo design on event memory and metacognitive control.

Journal article


Gawrylowicz, J, Scorboria, A, Teodorini, R and Albery, I (2018). Intoxicated eyewitnesses: The effect of a fully balanced placebo design on event memory and metacognitive control. Applied Cognitive Psychology. 33 (3), pp. 344-357.
AuthorsGawrylowicz, J, Scorboria, A, Teodorini, R and Albery, I
Abstract

Few studies have examined the impact of alcohol on metacognition for witnessed events. We used a 2x2 balanced placebo design, where mock-witnesses expected and drank alcohol, did not expect but drank alcohol, did not expect nor drank alcohol, or expected but did not drink alcohol. Participants watched a mock-crime in a bar-lab, followed by free recall and a cued-recall test with or without the option to reply ‘don’t know’ (DK). Intoxicated mock-witnesses’ free recall was less complete but not less accurate. During cued-recall, alcohol led to lower accuracy, and reverse placebo participants gave more erroneous and fewer correct responses. Permitting and clarifying DK responses was associated with fewer errors and more correct responses for sober individuals; and intoxicated witnesses were less likely to opt out of erroneous responding to unanswerable questions. Our findings highlight the practical and theoretical importance of examining pharmacological effects of alcohol and expectancies in real-life settings.

This is the peer reviewed version of the following article:Gawrylowicz, J., Scorboria, A., Teodorini, R., and Albery, I. (2018). Intoxicated eyewitnesses: The effect of a fully balanced placebo design on event memory and metacognitive control. Applied Cognitive Psychology, which has been published in final form at xxxx. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

KeywordsEyewitness Memory; Alcohol; Expectancies; Metacognitive Control; Don’t Know Responses
Year2018
JournalApplied Cognitive Psychology
Journal citation33 (3), pp. 344-357
PublisherWiley
ISSN1099-0720
Digital Object Identifier (DOI)doi:10.1002/acp.3504
Publication dates
Print03 Dec 2018
Publication process dates
Deposited28 Nov 2018
Accepted26 Nov 2018
Accepted author manuscript
License
CC BY 4.0
File Access Level
Open
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https://openresearch.lsbu.ac.uk/item/86865

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