A cognitive approach to lie detection: A metaanalysis

Introduction. This article provides a meta-analysis of a new, cognitive approach to (non-)verbal lie detection. This cognitive lie detection approach consists of three techniques: (1) imposing cognitive load, (2) encouraging interviewees to say more, and (3) asking unexpected questions.

Method. A meta-analysis was carried out on studies using the cognitive approach, 14 of which directly compared the cognitive approach to a standard approach.

Results. The cognitive lie detection approach produced superior accuracy results in truth detection (67%), lie detection (67%), and total detection (truth and lie detection combined, 71%) compared to a traditional standard approach (truth detection: 57%; lie detection: 47%; total detection: 56%).

Conclusions. Practitioners may find it useful to use a cognitive lie detection approach in their daily practice.

Vrij, A., Fisher, R., Blank, H. (2017). A cognitive approach to lie detection: A meta-analysis. Legal and Criminological Psychology, 22, 1-21.

Authors: Aldert Vrij, Ronald P. Fisher, Hartmund Blank

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