Age differences (or lack thereof) in discriminability for lineups and showups

Kylie N.  Key; Jeffrey S. Neuschatz; Jodi L. Price; Stacy Wetmore; Scott D. Gronlund

doi:10.1080/1068316X.2015.1054387

Age differences (or lack thereof) in discriminability for lineups and showups

Kylie N. Key, Jeffrey S. Neuschatz, Jodi L. Price, Stacy Wetmore, Scott D. Gronlund

Department of Psychology

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Abstract

Previous research reveals that showups are an inferior eyewitness identification procedure to lineups, but no single study has compared younger and older adults' identification decisions for both of these procedures. We had witnesses watch a mock crime video and then make an identification decision from a fair lineup, a biased lineup, or a showup that contained the perpetrator or a designated innocent suspect. Receiver operating characteristic (ROC) analysis showed that identification accuracy was higher from a lineup than from a showup for both age groups, even if the lineup was biased. In addition, calibration curves revealed that witnesses were underconfident when choosing from a fair lineup but overconfident when choosing from a showup. These results reinforce prior research asserting the superiority of lineups over showups.

Original language	English
Pages (from-to)	871-889
Number of pages	19
Journal	Psychology, Crime and Law
Volume	21
Issue number	9
Early online date	1 Jun 2015
DOIs	https://doi.org/10.1080/1068316X.2015.1054387
Publication status	Published - 2015

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10.1080/1068316X.2015.1054387

Accepted ManuscriptAccepted author manuscript, 475 KB

http://www.tandfonline.com/doi/abs/10.1080/1068316X.2015.1054387

Cite this

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title = "Age differences (or lack thereof) in discriminability for lineups and showups",

abstract = "Previous research reveals that showups are an inferior eyewitness identification procedure to lineups, but no single study has compared younger and older adults' identification decisions for both of these procedures. We had witnesses watch a mock crime video and then make an identification decision from a fair lineup, a biased lineup, or a showup that contained the perpetrator or a designated innocent suspect. Receiver operating characteristic (ROC) analysis showed that identification accuracy was higher from a lineup than from a showup for both age groups, even if the lineup was biased. In addition, calibration curves revealed that witnesses were underconfident when choosing from a fair lineup but overconfident when choosing from a showup. These results reinforce prior research asserting the superiority of lineups over showups.",

author = "Key, {Kylie N.} and Neuschatz, {Jeffrey S.} and Price, {Jodi L.} and Stacy Wetmore and Gronlund, {Scott D.}",

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AU - Key, Kylie N.

AU - Neuschatz, Jeffrey S.

AU - Price, Jodi L.

AU - Wetmore, Stacy

AU - Gronlund, Scott D.

PY - 2015

Y1 - 2015

N2 - Previous research reveals that showups are an inferior eyewitness identification procedure to lineups, but no single study has compared younger and older adults' identification decisions for both of these procedures. We had witnesses watch a mock crime video and then make an identification decision from a fair lineup, a biased lineup, or a showup that contained the perpetrator or a designated innocent suspect. Receiver operating characteristic (ROC) analysis showed that identification accuracy was higher from a lineup than from a showup for both age groups, even if the lineup was biased. In addition, calibration curves revealed that witnesses were underconfident when choosing from a fair lineup but overconfident when choosing from a showup. These results reinforce prior research asserting the superiority of lineups over showups.

AB - Previous research reveals that showups are an inferior eyewitness identification procedure to lineups, but no single study has compared younger and older adults' identification decisions for both of these procedures. We had witnesses watch a mock crime video and then make an identification decision from a fair lineup, a biased lineup, or a showup that contained the perpetrator or a designated innocent suspect. Receiver operating characteristic (ROC) analysis showed that identification accuracy was higher from a lineup than from a showup for both age groups, even if the lineup was biased. In addition, calibration curves revealed that witnesses were underconfident when choosing from a fair lineup but overconfident when choosing from a showup. These results reinforce prior research asserting the superiority of lineups over showups.

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