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                            Library & Multimedia
 The number of fillers may not matter as long as they all match the description: The effect of simultaneous lineup size on eyewitness identification
NCJ Number
              305268
Journal

*Applied Cognitive Psychology* Volume: 34 Issue: 3 Dated: 2022 Pages: 590-604
Author(s)
          Alex R. Wooten;
                        Curt A. Carlson;
                        Robert F. Lockamyeir;
                        Maria A. Carlson;
                        Alyssa R. Jones;
                        Jennifer L. Dias;
                        Jacob A. Hemby
Date Published

2022
Length
              15 pages
Annotation
              According to the Diagnostic Feature-Detection (DFD) hypothesis, the presence of fillers that match the eyewitness's description of the perpetrator will boost discriminability beyond a showup, and very few fillers may suffice to produce the advantage, so we tested this hypothesis by comparing showups with simultaneous lineups of size 3, 6, 9, and 12.
Abstract
              Participants (N = 10,433) were randomly assigned to one of these conditions, as well as target-present (TP) versus target-absent (TA) lineup. As predicted by the DFD hypothesis, lineups were superior to showups, and there was no advantage with increased lineup size beyond a 3-member lineup. The confidence-accuracy (CA) relationship held a similar pattern. The only effect of increased lineup size was a lower likelihood of choosing a suspect (guilty or innocent). We conclude that police should focus more on the quality rather than quantity of fillers. (Publisher abstract provided)
      
  
          Additional Details
Grant Number(s)
        2018-R2-CX-0027


  
  
        
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        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)


  
  
        
  Award
        Eyewitness Identification: A Systematic Investigation of Lineup Composition and Fairness
    
  
  
Date Published: January 1, 2022
    
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