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Training police investigators to interview to detect false intentions

Journal article
Authors Tuule Sooniste
Pär-Anders Granhag
Leif Strömwall
Published in Journal of Police and Criminal Psychology
Volume 32
Issue 2
Pages 152-162
ISSN 0882-0783
Publication year 2017
Published at Department of Psychology
Pages 152-162
Language en
Keywords Deception detection training, True and false intentions, Unanticipated questions, Police investigators
Subject categories Applied Psychology


This study is the first to investigate police investigators’ adherence to, and the effectiveness of, a training program for detecting true and false intentions. Experienced police investigators (N = 53) were either trained or not trained in how to interview to discriminate between true and false intentions. All investigators interviewed mock suspects (N = 53), of which half lied and half told truth about their intentions. Both subjective and objective measures showed that the trained investigators interviewed in line with the training received. That is, a large proportion asked about the planning of the stated intentions. Noteworthy, none of untrained investigators reported to have posed such questions for strategic purposes. The trained investigators reached a higher detection accuracy level (65 %) than their untrained colleagues (55 %), however not significantly. Given that the investigators adhered to the training, this training package is a viable starting point for developing more effective training programs.

Page Manager: Webmaster|Last update: 9/11/2012

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