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Individual differences in face identification postdict eyewitness accuracy
Authors:Markus Bindemann  Chennelle Brown  Tiffany Koyas  Andrew Russ
Affiliation:1. School of Psychology, University of Kent, UK;2. Department of Psychology, University of Essex, UK;1. Department of Psychology, University of California, San Diego, United States;2. Department of Psychology, Royal Holloway, University of London, United Kingdom;1. University of Oklahoma, United States;2. The University of Alabama in Huntsville, United States;3. Canisius College, United States;4. Texas A&M University – Commerce, United States;1. Department of Psychology, University of California, San Diego, United States;2. Department of Psychology, Royal Holloway, University of London, United Kingdom;1. Augsburg College, United States;2. John Jay College of Criminal Justice, United States
Abstract:Eyewitnesses frequently mistake innocent suspects for the culprits of an observed crime, and such misidentifications have caused the wrongful convictions of many innocent people. This study attempted to establish the accuracy of individual eyewitnesses by assessing their ability to process unfamiliar faces. Observers viewed a staged crime and later tried to select the culprit from an identity lineup. This was followed by a face test that provides a laboratory analogue to lineup identifications. We found that this face test could determine the reliability of individual witnesses when a positive eyewitness identification had been made. Importantly, this was possible based on the specific response that a witness had made and without prior knowledge of whether the culprit was actually present in the lineup. These findings demonstrate that individual differences in face processing provide a potential instrument for postdicting eyewitness accuracy and for preventing miscarriages of justice.
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