Chapter 13 - Verbal Lie Detection Tools From an Applied Perspective

Abstract

This chapter introduces seven verbal lie detection techniques and discusses whether they are ready for use in investigative interviews: Statement Validity Assessment (SVA), Reality Monitoring (RM), Scientific Content Analysis (SCAN), Cognitive Credibility Assessment (CCA), Strategic Use of Evidence (SUE), Verifiability Approach (VA), and Assessment Criteria Indicative of Deception (ACID). Fourteen questions were developed on which to judge their suitability. There is substantial difference in the extent to which the seven lie detection techniques met these criteria. SCAN (the most frequently used tool in real life of the tools discussed in this chapter) falls short on numerous criteria and therefore in my view unfit for use as a lie detection tool. SVA is a complicated method to learn and use and in that respect RM is preferable. Regarding the imposing cognitive load technique (part of CCA), there is a risk that truth-tellers cannot cope well with the imposing cognitive load demands and, consequently, may provide similar responses as liars. I therefore do not recommend it for use in real life as a stand-alone tool, but it could be used in combination with other techniques.