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dc.contributor.authorPfeil, Katrin
dc.date.accessioned2018-04-16T16:45:02Z
dc.date.available2018-04-16T16:45:02Z
dc.date.issued2018-07-21
dc.date.submitted2017-03-02
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/274905
dc.description.abstractThe Self-Administered Interview© (SAI©) is an eyewitness interviewing tool designed to help protect eyewitness memory and elicit a comprehensive initial statement (Gabbert, Hope, & Fisher, 2009). Early research shows promising results in general adult samples. Whether the SAI© is an effective tool for older adult witnesses has not yet been fully addressed. Older adults will become increasingly important as a witness population in the future, yet perform worse compared to young adults. Some attempts have been made to aid older adult witnesses, but an easy-to-apply and effective method is yet to be introduced. This dissertation presents an overview of current knowledge on eyewitnesses and provides a theoretical basis for the empirical chapters. It further presents results of a systematic review and several meta-analyses on the effectiveness of the SAI© as a means to enhance eyewitness testimony. The meta-analyses cover 38 experimental comparisons from 22 empirical studies representing 1712 interviewees. Results indicate a strong benefit of the SAI both immediately after the witnessed crime (d = 1.20) and in a delayed recall (d = 0.92 compared to no initial recall) after one to three weeks. The third large chapter of this dissertation presents the results of an experiment that investigated the effectiveness of the SAI© for older witnesses’ testimony, suggestibility and lineup performance. 144 participants, half of which were 60 years or older and half aged 18-30 years, took part in two sessions. In the first session, they were shown a film of a staged crime and either filled in the SAI©, gave a written free recall or no initial recall. In the second session after one week they were then asked to give a free recall of what they remembered, answer questions including suggestive questions, and also to identify the perpetrator from the film from a 6-person simultaneous photo lineup. Results confirm the classic SAI© effect for young adults, show a small beneficial effect for older adults and also indicate a beneficial effect for lineup performance for the first time.
dc.language.isoen
dc.rightsAll rights reserved
dc.subjectEyewitnesses
dc.subjectInvestigative Interviewing
dc.subjectMeta-Analysis
dc.subjectSelf-Administered Interview
dc.subjectTestimony
dc.subjectPerson Identification
dc.titleThe Effectiveness of the Self-Administered Interview© - A Meta-Analytic Review and Empirical Study with Older Adult Witnesses
dc.typeThesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnameDoctor of Philosophy (PhD)
dc.publisher.institutionUniversity of Cambridge
dc.publisher.departmentInstitute of Criminology
dc.date.updated2018-04-09T09:16:16Z
dc.identifier.doi10.17863/CAM.22056
dc.publisher.collegeSelwyn College
dc.type.qualificationtitlePhD in Criminology
cam.supervisorMueller-Johnson, Katrin
cam.thesis.fundingfalse
rioxxterms.freetoread.startdate2019-04-16


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