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                            Library & Multimedia
 Reduction of False Convictions Through Improved Identification Procedures: Further Refinements for Street Practice and Public Policy
NCJ Number
              249006

Author(s)
          Nancy K. Steblay
Date Published

January 2012
Length
              92 pages
Annotation
              The overall objective of this study was to improve the quality and probative value of evidence obtained from eyewitnesses through police lineup procedures.
Abstract
              A sequential lineup of individuals was found to produce more accurate eyewitness suspect identifications from lineups than a simultaneous lineup of a group of individuals.  In addition, new laboratory data obtained in this study found an improvement in eyewitness identification accuracy by giving eyewitnesses the option for a "not-sure" response option.  Giving eyewitnesses the instruction that a suspect's appearance may have been changed had minimal impact on the accuracy of suspect identifications.  A significant negative outcome resulted from exposing eyewitnesses to repeated lineups.  The study conducted an updated meta-analytic review of research that compared simultaneous to sequential lineup formats.  An evaluation was conducted of the sequential superiority effects, and factors that moderate this effect are explained.  Controlled laboratory testing was conducted of the impact on eyewitness accuracy of three individual lineup procedural components: relaxation fo the "Yes/No" response requirement of the sequential lineup procedure to allow for "I'm not sure" responses, an appearance-change instruction to eyewitnesses, and the use of multiple identification tasks with the same witness.  The study also collected and analyzed data in collaboration with the Tucson Police Department (Arizona) in comparing performance on lineup identification under double-blind simultaneous versus double-blind sequential line-up procedures.  7 tables and 59 references
      
  
          Additional Details
Grant Number(s)
        2007-IJ-CX-0046


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)
                                Report (Study/Research)
                                Report (Grant Sponsored)


  
  
        
  Award
        Reduction of False Convictions Through Improved Identification Procedures: Further Refinements for Street Practice and Public Policy
    
  
  
Date Published: January 1, 2012
    
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Related Datasets
        
                      http://doi.org/10.3886/ICPSR34316.v1
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