Law and Human Behavior

, Volume 30, Issue 5, pp 603–619 | Cite as

Strategic Use of Evidence During Police Interviews: When Training to Detect Deception Works

  • Maria Hartwig
  • Pär Anders Granhag
  • Leif A. Strömwall
  • Ola Kronkvist
Original Article

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%).

Keywords

Deception detection Statement-evidence consistency Evidence disclosure Interviewers’ strategies Suspects’ strategies 

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Copyright information

© American Psychology-Law Society/Division 41 of the American Psychological Association 2006

Authors and Affiliations

  • Maria Hartwig
    • 1
  • Pär Anders Granhag
    • 2
  • Leif A. Strömwall
    • 2
  • Ola Kronkvist
    • 3
  1. 1.Department of Psychology, John Jay College of Criminal JusticeThe City University of New YorkNew YorkUSA
  2. 2.Göteborg UniversityGöteborgSweden
  3. 3.Växjö UniversityVäxjöSweden

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