Strategic Use of Evidence During Police Interviews: When Training to Detect Deception Works |
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Authors: | Maria Hartwig Pär Anders Granhag Leif A. Strömwall Ola Kronkvist |
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Affiliation: | Department of Psychology, John Jay College of Criminal Justice, The City University of New York, New York, NY 10019, USA. mhartwig@jjay.cuny.edu |
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Abstract: | Research on deception detection in legal contexts has neglected the question of how the use of evidence can affect deception detection accuracy. In this study, police trainees (N=82) either were or were not trained in strategically using the evidence when interviewing lying or truth telling mock suspects (N=82). The trainees’ strategies as well as liars’ and truth tellers’ counter-strategies were analyzed. Trained interviewers applied different strategies than did untrained. As a consequence of this, liars interviewed by trained interviewers were more inconsistent with the evidence compared to liars interviewed by untrained interviewers. Trained interviewers created and utilized the statement-evidence consistency cue, and obtained a considerably higher deception detection accuracy rate (85.4%) than untrained interviewers (56.1%). |
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Keywords: | Deception detection Statement-evidence consistency Evidence disclosure Interviewers’ strategies Suspects’ strategies |
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