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Can the effectiveness of eyewitness expert testimony be improved?

ABSTRACT: For over 35 years, scholars have searched with little success for a legal safeguard that can sensitize jurors to eyewitness testimony. The present study explored whether expert testimony that uses the I-I-Eye method of analyzing eyewitness testimony can improve juror sensitivity to eyewitness evidence. Participants read a trial transcript with no expert testimony, standard expert testimony or expert testimony that used the I-I-Eye method. The two transcripts for the three expert groups had either strong or weak eyewitness testimony. Unlike the control participants, the I-I-Eye expert participants rendered significantly more guilty verdicts in the strong than in the weak case. The standard expert testimony did not affect verdicts even though it increased participants' knowledge of the eyewitness factors. It appears that the I-I-Eye method improved sensitivity because it not only increased participants' knowledge of eyewitness factors, but also explained how to use that knowledge in assessing eyewitness accuracy.

SUBMITTER: Wise RA

PROVIDER: S-EPMC7476630 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Can the effectiveness of eyewitness expert testimony be improved?

Wise Richard A RA Kehn Andre A

Psychiatry, psychology, and law : an interdisciplinary journal of the Australian and New Zealand Association of Psychiatry, Psychology and Law 20200319 2

For over 35<b> </b>years, scholars have searched with little success for a legal safeguard that can sensitize jurors to eyewitness testimony. The present study explored whether expert testimony that uses the I-I-Eye method of analyzing eyewitness testimony can improve juror sensitivity to eyewitness evidence. Participants read a trial transcript with no expert testimony, standard expert testimony or expert testimony that used the I-I-Eye method. The two transcripts for the three expert groups ha ...[more]

PMID: 32944129

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Project description:Children have a powerful ability to track probabilistic information, but there are also situations in which young learners simply follow what another person says or does at the cost of obtaining rewards. This latter phenomenon, sometimes termed bias to trust in testimony, has primarily been studied in children preschool-age and younger, presumably because reasoning capacities improve with age. Less attention has been paid to situations in which testimony bias lingers-one possibility is that children revert to a testimony bias under conditions of uncertainty. Here, participants (4 to 9 years old) searched for rewards and received testimony that varied in reliability. We find support for testimony bias beyond preschool-age, particularly for uncertain testimony. Children were sensitive to trial-by-trial uncertainty (Experiment 1: N = 102, 59 boys, 43 girls; the sample included nine Hispanic/Latinx, 93 non-Hispanic/Latinx participants, of whom six were Black/African American, seven were Asian American, eight were multiracial, 77 were White, and four indicated "other" or did not respond), and with uncertainty defined as a one-time, unexpected change in the testimony (Experiment 3: N = 129; 68 boys, 61 girls; the sample included 12 Hispanic/Latinx, 117 non-Hispanic/Latinx [10 Black/African American, four Asian American, nine multiracial, 103 White, and three "other"]). However, the impact of the testimony bias decreased with age. These effects were specific to the testimony coming from another person as opposed to resulting from a computer glitch (Experiment 2: N = 89, 52 boys, 37 girls; five Hispanic/Latinx, 80 non-Hispanic/Latinx, of whom one was Black/African American, three were Asian American, 15 were multiracial, 66 were White, and four did not report race). Taken together, these experiments provide evidence of a disproportionate influence of testimony, even in children with more advanced reasoning skills. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

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Can the effectiveness of eyewitness expert testimony be improved?

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Can the effectiveness of eyewitness expert testimony be improved?

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