Memory accuracy, suggestibility and credibility in investigative interviews with native and non-native eyewitnesses

Legal practitioners sometimes obtain eyewitness testimonies from non-native language speakers, yet few studies examine the effects of language in investigative interviews. Here, we investigate how testifying in a non-native vs. native language affects memory accuracy, susceptibility to suggestions,...

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Main Authors: Arman Raver, Torun Lindholm, Philip U. Gustafsson, Charlotte Alm
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-08-01
Series:Frontiers in Psychology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpsyg.2023.1240822/full
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author Arman Raver
Torun Lindholm
Philip U. Gustafsson
Charlotte Alm
author_facet Arman Raver
Torun Lindholm
Philip U. Gustafsson
Charlotte Alm
author_sort Arman Raver
collection DOAJ
description Legal practitioners sometimes obtain eyewitness testimonies from non-native language speakers, yet few studies examine the effects of language in investigative interviews. Here, we investigate how testifying in a non-native vs. native language affects memory accuracy, susceptibility to suggestions, and witnesses perceived credibility. After viewing a mock-crime film, participants in Study 1 (N = 121) testified through (1) free recall, (2) cued recall and (3) the Gudjonsson Suggestibility Scales adapted to the crime scenario used in the present study either in their native (Swedish) or a non-native (English) language. They also rated their confidence in their memories, self-perceived credibility and cognitive effort. Native and non-native witnesses did not differ in memory accuracy, susceptibility to suggestions, self-rated credibility or cognitive effort. Non-native (vs. native) speakers did however report lower confidence in their memories. In Study 2, another group of participants (N = 202) were presented with the testimonies from Study 1, and judged witnesses’ credibility. Non-native witnesses were judged as less credible than native speakers. Thus, while the lower confidence exhibited by non-native eyewitnesses did not correspond to their actual memory accuracy, it influenced observers’ judgments of their performance. The results provide important knowledge for legal practices when evaluating the reliability of testimonies from non-native vs. native speaking eyewitnesses.
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spelling doaj.art-73c4c533135741058dd377e1540095e42023-08-24T21:53:08ZengFrontiers Media S.A.Frontiers in Psychology1664-10782023-08-011410.3389/fpsyg.2023.12408221240822Memory accuracy, suggestibility and credibility in investigative interviews with native and non-native eyewitnessesArman RaverTorun LindholmPhilip U. GustafssonCharlotte AlmLegal practitioners sometimes obtain eyewitness testimonies from non-native language speakers, yet few studies examine the effects of language in investigative interviews. Here, we investigate how testifying in a non-native vs. native language affects memory accuracy, susceptibility to suggestions, and witnesses perceived credibility. After viewing a mock-crime film, participants in Study 1 (N = 121) testified through (1) free recall, (2) cued recall and (3) the Gudjonsson Suggestibility Scales adapted to the crime scenario used in the present study either in their native (Swedish) or a non-native (English) language. They also rated their confidence in their memories, self-perceived credibility and cognitive effort. Native and non-native witnesses did not differ in memory accuracy, susceptibility to suggestions, self-rated credibility or cognitive effort. Non-native (vs. native) speakers did however report lower confidence in their memories. In Study 2, another group of participants (N = 202) were presented with the testimonies from Study 1, and judged witnesses’ credibility. Non-native witnesses were judged as less credible than native speakers. Thus, while the lower confidence exhibited by non-native eyewitnesses did not correspond to their actual memory accuracy, it influenced observers’ judgments of their performance. The results provide important knowledge for legal practices when evaluating the reliability of testimonies from non-native vs. native speaking eyewitnesses.https://www.frontiersin.org/articles/10.3389/fpsyg.2023.1240822/fullinvestigative interviewconfidence-accuracy relationshipmemory accuracysuggestibilitycredibility judgmentlanguage barrier
spellingShingle Arman Raver
Torun Lindholm
Philip U. Gustafsson
Charlotte Alm
Memory accuracy, suggestibility and credibility in investigative interviews with native and non-native eyewitnesses
Frontiers in Psychology
investigative interview
confidence-accuracy relationship
memory accuracy
suggestibility
credibility judgment
language barrier
title Memory accuracy, suggestibility and credibility in investigative interviews with native and non-native eyewitnesses
title_full Memory accuracy, suggestibility and credibility in investigative interviews with native and non-native eyewitnesses
title_fullStr Memory accuracy, suggestibility and credibility in investigative interviews with native and non-native eyewitnesses
title_full_unstemmed Memory accuracy, suggestibility and credibility in investigative interviews with native and non-native eyewitnesses
title_short Memory accuracy, suggestibility and credibility in investigative interviews with native and non-native eyewitnesses
title_sort memory accuracy suggestibility and credibility in investigative interviews with native and non native eyewitnesses
topic investigative interview
confidence-accuracy relationship
memory accuracy
suggestibility
credibility judgment
language barrier
url https://www.frontiersin.org/articles/10.3389/fpsyg.2023.1240822/full
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