Journal
PSYCHOPHARMACOLOGY
Volume 238, Issue 6, Pages 1485-1493Publisher
SPRINGER
DOI: 10.1007/s00213-021-05776-0
Keywords
Alcohol; Co-witness discussion; Memory conformity; Misinformation; Intoxication
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The study found that co-witness discussion and alcohol can influence eyewitness testimony, with dyads more likely to recall misleading details, while alcohol has no negative impact on correctly identifying the source of responses, but does reduce the amount of details recalled under free recall and confidence in the recall.
Rationale Co-witness discussion is common and often witnesses are under the influence of alcohol. As such, it is important to understand how such factors may influence eyewitness testimony. Objectives We combined a co-witness memory paradigm with an alcohol administration paradigm to examine the influence of alcohol and dyadic discussion on remembering a mock crime. Methods Intoxicated and sober dyads discussed a previously seen video, whilst in a control condition sober and intoxicated individuals recalled the event on their own. Unknown to the dyads, each discussion partner saw a different version of the video including unique details not present in the other video version. All participants then engaged in a second individual recall attempt. Results Dyads were more likely to recall misleading details in their individual recall attempts compared to the control group. Intoxicated and sober dyads were equally likely to report misleading information. Alcohol intoxication had no negative impact on individuals' ability to correctly identify the source of their responses. Intoxicated participants recalled fewer details under free recall conditions. Alcohol had a detrimental effect on participants' confidence in their free recall accounts. Conclusions Possible alcohol-related and social-cognitive mechanisms are discussed which may contribute to the current findings as well as applied implications for interviewing intoxicated witnesses.
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