Policy Regarding the Sequential Lineup Is Not Informed by Probative Value but Is Informed by Receiver Operating Characteristic Analysis. (February 2014)

• Record Type: Journal Article
• Authors: Wixted, John T.; Gronlund, Scott D.; Mickes, Laura
• Is Part Of: Current directions in psychological science. Volume 23:Number 1(2014:Feb.)
• Page Start: 17
• Page End: 18
• Publication Date: 2014-02
• Subjects: eyewitness memory -- simultaneous versus sequential lineups -- signal detection theory; Psychology -- Periodicals; 150
• DOI: 10.1177/0963721413510934
• Languages: English
• ISSNs: 0963-7214

Abstract

It is important to determine if switching from simultaneous to sequential lineups affects response bias (the inclination to make an identification from a lineup), discriminability (the ability to distinguish between innocent and guilty suspects), or both. Measures of probative value cannot provide such information; receiver operating characteristic analysis can. Recent receiver operating characteristic analyses indicate that switching to sequential lineups both induces more conservative responding and makes it more difficult to distinguish between innocent and guilty suspects. If more conservative responding is preferred (i.e., if policymakers judge that the harm associated with the reduction of correct identifications is exceeded by the benefit associated with the reduction in false identifications), recent data indicate that this result can be achieved without a loss of discriminability by using the simultaneous lineup procedure in conjunction with a more conservative decision criterion.