Eyewitness identification: Photographs vs. live models.

Abstract
In a simulated crime stituation, 3 groups of eyewitnesses viewed 2 target persons through a one-way mirror and were tested for accuracy of identification after dealy periods of 2, 21, or 56 days. Subjects made identifications from either a live “show-up” or by looking at photographs. In both methods of testing only 1 of the 2 targets was actually present in the 5-man array. Results indicated that delay affects number of false alarms, test method affects number of hits. Photographs produced less accurate performance than live show-up. More than 60% of the subjects erroneously selected one of the 4 distractor persons, a finding relevant to the use of eyewitness identification in criminal investigations. Only 28% of the subjects made no errors of identification.

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