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Eyewitness Accuracy Rates in Police Showup and Lineup Presentations: A Meta-Analytic Comparison

Nancy Steblay, Jennifer Dysart, Solomon Fulero and R. C. L. Lindsay
Law and Human Behavior
Vol. 27, No. 5 (Oct., 2003), pp. 523-540
Published by: Springer
Stable URL: http://www.jstor.org/stable/3595153
Page Count: 18
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Eyewitness Accuracy Rates in Police Showup and Lineup Presentations: A Meta-Analytic Comparison
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Abstract

Meta-analysis is used to compare identification accuracy rates in showups and lineups. Eight papers were located, providing 12 tests of the hypothesis and including 3013 participants. Results indicate that showups generate lower choosing rates than lineups. In target present conditions, showups and lineups yield approximately equal hit rates, and in target absent conditions, showups produce a significantly higher level of correct rejections. False identification rates are approximately equal in showups and lineups when lineup foil choices are excluded from analysis. Dangerous false identifications are more numerous for showups when an innocent suspect resembles the perpetrator. Function of lineup foils, assessment strategies for false identifications, and the potential impact of biases in lineup practice are suggested as additional considerations in evaluation of showup versus lineup efficacy.

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