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The Aging Eyewitness: Effects of Age on Face, Delay, and Source-Memory Ability

¹ Department of Psychology, University of Aberdeen, Scotland.
² School of Human Development, University of Texas at Dallas.
³ Department of Psychology, Kingston University, Surrey, England.

Address correspondence to Professor Amina Memon, Department of Psychology, University Of Aberdeen, Kings College, Old Aberdeen, Scotland, AB24 2UB. E-mail: amemon{at}abdn.ac.uk

As a way to examine the nature of age-related differences in lineup identification accuracy, young (16–33 years) and older (60–82 years) witnesses viewed two similar videotaped incidents, one involving a young perpetrator and the other involving an older perpetrator. The incidents were followed by two separate lineups, one for the younger perpetrator and one for the older perpetrator. When the test delay was short (35 min), the young and older witnesses performed similarly on the lineups, but when the tests were delayed by 1 week, the older witnesses were substantially less accurate. When the target was absent from the lineups, the older witnesses made more false alarm errors, particularly when the faces were young. When the target was present in the lineups, correct identifications by both young and older witnesses were positively correlated with a measure of source recollection derived from a separate face-recognition task. Older witnesses scored poorly on this measure, suggesting that source-recollection deficits are partially responsible for age-related differences in performance on the lineup task.