In the October 2006 issue of Law and Human Behavior (vol 30, issue 5), Maria Hartwig and her colleagues present research on training law enforcement officers to detect deception:
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%).
Check out that accuracy rate – 85%!
- Maria Hartwig, Pär Anders Granhag, Leif A. Strömwall and Ola Kronkvist (2006). Strategic Use of Evidence During Police Interviews: When Training to Detect Deception Works. Law and Human Behavior 30(5)