US line-ups outperform UK line-ups

In the USA and the UK, many thousands of police suspects are identified by eyewitnesses every year. Unfortunately, many of those suspects are innocent, which becomes evident when they are exonerated by DNA testing, often after having been imprisoned for years. It is, therefore, imperative to use ide...

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Main Authors: Travis M. Seale-Carlisle, Laura Mickes
Format: Article
Language:English
Published: The Royal Society 2016-01-01
Series:Royal Society Open Science
Subjects:
Online Access:https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.160300
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author Travis M. Seale-Carlisle
Laura Mickes
author_facet Travis M. Seale-Carlisle
Laura Mickes
author_sort Travis M. Seale-Carlisle
collection DOAJ
description In the USA and the UK, many thousands of police suspects are identified by eyewitnesses every year. Unfortunately, many of those suspects are innocent, which becomes evident when they are exonerated by DNA testing, often after having been imprisoned for years. It is, therefore, imperative to use identification procedures that best enable eyewitnesses to discriminate innocent from guilty suspects. Although police investigators in both countries often administer line-up procedures, the details of how line-ups are presented are quite different and an important direct comparison has yet to be conducted. We investigated whether these two line-up procedures differ in terms of (i) discriminability (using receiver operating characteristic analysis) and (ii) reliability (using confidence–accuracy characteristic analysis). A total of 2249 participants watched a video of a crime and were later tested using either a six-person simultaneous photo line-up procedure (USA) or a nine-person sequential video line-up procedure (UK). US line-up procedure yielded significantly higher discriminability and significantly higher reliability. The results do not pinpoint the reason for the observed difference between the two procedures, but they do suggest that there is much room for improvement with the UK line-up.
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spelling doaj.art-27062ff025c3481380f597914f941bc12022-12-21T19:14:34ZengThe Royal SocietyRoyal Society Open Science2054-57032016-01-013910.1098/rsos.160300160300US line-ups outperform UK line-upsTravis M. Seale-CarlisleLaura MickesIn the USA and the UK, many thousands of police suspects are identified by eyewitnesses every year. Unfortunately, many of those suspects are innocent, which becomes evident when they are exonerated by DNA testing, often after having been imprisoned for years. It is, therefore, imperative to use identification procedures that best enable eyewitnesses to discriminate innocent from guilty suspects. Although police investigators in both countries often administer line-up procedures, the details of how line-ups are presented are quite different and an important direct comparison has yet to be conducted. We investigated whether these two line-up procedures differ in terms of (i) discriminability (using receiver operating characteristic analysis) and (ii) reliability (using confidence–accuracy characteristic analysis). A total of 2249 participants watched a video of a crime and were later tested using either a six-person simultaneous photo line-up procedure (USA) or a nine-person sequential video line-up procedure (UK). US line-up procedure yielded significantly higher discriminability and significantly higher reliability. The results do not pinpoint the reason for the observed difference between the two procedures, but they do suggest that there is much room for improvement with the UK line-up.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.160300eyewitness identificationus line-upuk line-upsimultaneous line-upsequential line-up
spellingShingle Travis M. Seale-Carlisle
Laura Mickes
US line-ups outperform UK line-ups
Royal Society Open Science
eyewitness identification
us line-up
uk line-up
simultaneous line-up
sequential line-up
title US line-ups outperform UK line-ups
title_full US line-ups outperform UK line-ups
title_fullStr US line-ups outperform UK line-ups
title_full_unstemmed US line-ups outperform UK line-ups
title_short US line-ups outperform UK line-ups
title_sort us line ups outperform uk line ups
topic eyewitness identification
us line-up
uk line-up
simultaneous line-up
sequential line-up
url https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.160300
work_keys_str_mv AT travismsealecarlisle uslineupsoutperformuklineups
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