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A Re-examination of the Effects of Biased Lineup Instructions in Eyewitness Identification

A Re-examination of the Effects of Biased Lineup Instructions in Eyewitness Identification A meta-analytic review of research comparing biased and unbiased instructions in eyewitness identification experiments showed an asymmetry; specifically, that biased instructions led to a large and consistent decrease in accuracy in target-absent lineups, but produced inconsistent results for target-present lineups, with an average effect size near zero (Steblay, 1997). The results for target-present lineups are surprising, and are inconsistent with statistical decision theories (i.e., Green & Swets, 1966). A re-examination of the relevant studies and the meta-analysis of those studies shows clear evidence that correct identification rates do increase with biased lineup instructions, and that biased witnesses make correct identifications at a rate considerably above chance. Implications for theory, as well as police procedure and policy, are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Law and Human Behavior Springer Journals

A Re-examination of the Effects of Biased Lineup Instructions in Eyewitness Identification

Law and Human Behavior , Volume 29 (5) – Jan 1, 2005

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References (54)

Publisher
Springer Journals
Copyright
Copyright © 2005 by American Psychology-Law Society/Division 41 of the American Psychological Association
Subject
Psychology; Law and Psychology; Criminology and Criminal Justice, general; Personality and Social Psychology; Community and Environmental Psychology
ISSN
0147-7307
eISSN
1573-661X
DOI
10.1007/s10979-005-7121-1
pmid
16254744
Publisher site
See Article on Publisher Site

Abstract

A meta-analytic review of research comparing biased and unbiased instructions in eyewitness identification experiments showed an asymmetry; specifically, that biased instructions led to a large and consistent decrease in accuracy in target-absent lineups, but produced inconsistent results for target-present lineups, with an average effect size near zero (Steblay, 1997). The results for target-present lineups are surprising, and are inconsistent with statistical decision theories (i.e., Green & Swets, 1966). A re-examination of the relevant studies and the meta-analysis of those studies shows clear evidence that correct identification rates do increase with biased lineup instructions, and that biased witnesses make correct identifications at a rate considerably above chance. Implications for theory, as well as police procedure and policy, are discussed.

Journal

Law and Human BehaviorSpringer Journals

Published: Jan 1, 2005

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