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Full-Text Articles in Social and Behavioral Sciences
Forgetting The Once-Seen Face: Estimating The Strength Of An Eyewitness’S Memory Representation, Kenneth A. Deffenbacher, Brian H. Bornstein, E. Kiernan Mcgorty, Steven D. Penrod
Forgetting The Once-Seen Face: Estimating The Strength Of An Eyewitness’S Memory Representation, Kenneth A. Deffenbacher, Brian H. Bornstein, E. Kiernan Mcgorty, Steven D. Penrod
Psychology Faculty Publications
The fidelity of an eyewitness’s memory representation is an issue of paramount forensic concern. Psychological science has been un¬able to offer more than vague generalities concerning the relation of retention interval to memory trace strength for the once-seen face. A meta-analysis of 53 facial memory studies produced a highly reliable association (r = .18, d = 0.37) between longer retention intervals and positive forgetting of once-seen faces, an effect equally strong for both face recognition and eyewitness identification studies. W. A. Wick¬elgren’s (1974, 1975, 1977) theory of recognition memory provided statistically satisfactory fits to 11 different empirical forgetting func¬tions. Applied …
A Meta-Analytic Review Of The Effects Of High Stress On Eyewitness Memory, Kenneth A. Deffenbacher, Brian H. Bornstein, Steven D. Penrod, E. Kiernan Mcgorty
A Meta-Analytic Review Of The Effects Of High Stress On Eyewitness Memory, Kenneth A. Deffenbacher, Brian H. Bornstein, Steven D. Penrod, E. Kiernan Mcgorty
Psychology Faculty Publications
In the past 30 years researchers have examined the impact of heightened stress on the fidelity of eyewitness memory. Meta-analyses were conducted on 27 independent tests of the effects of heightened stress on eyewitness identification of the perpetrator or target person and separately on 36 tests of eyewitness recall of details associated with the crime. There was considerable support for the hypothesis that high levels of stress negatively impact both types of eyewitness memory. Meta-analytic Z-scores, whether unweighted or weighted by sample size, ranged from -5.40 to -6.44 (high stress condition–low stress condition). The overall effect sizes were -.31 for …