Lecture Visiting Professors Programme: Aldert Vrij

28 October 2009 from 15:00 to 16:00 hrs
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Outsmarting the liars

Programme KNAW Visiting Professors Lecture SeriesDespite the importance of detecting deception in legal and security investigations, interview protocols that are currently used to detect deceit are flawed. Some protocols are based on the assumption that liars will be more aroused when answering key questions than when answering comparison questions through fear of being caught. This premise is theoretically weak. We propose and provide empirical support for an alternative approach to detection deception, namely that lying is sometimes cognitively more demanding than truth telling. We also show how interviewers can exploit liars' diminished cognitive capacity to discriminate more effectively between liars and truth tellers.<br/>