The detection of deception during trials: Ignoring the nonverbal communication of witnesses is not the solution—A response to Vrij and Turgeon (2018)

Abstract

In their paper ‘Evaluating credibility of witnesses—Are we instructing jurors on invalid factors?’, Vrij and Turgeon (2018) argue that jurors should be advised not to consider demeanour when trying to evaluate if witnesses are honest or dishonest because of ‘overwhelming scientific evidence’. However, in this response, we contend that substantial empirical scientific studies on nonverbal communication alongside the limitations of deception detection research, as cited by Vrij and Turgeon (2018), undermine their overall argument. While jurors should be warned about erroneous beliefs and dubious concepts on human communication, jurors should also be advised to consider demeanour as a way of enriching their overall understanding of witnesses and their verbal testimony.