Identificazione verbale della menzogna nelle interviste investigative

In this article we discuss developments in verbal lie detection. We start with presenting evidence that verbal lie detection is superior to nonverbal lie detection and provide a possible explanation: In interview settings truth tellers and lie tellers use similar nonverbal strategies, but their verbal strategies differ. Interview protocols have been developed that use specific instructions to exploit these veracity differences in verbal strategies. We introduce the three most frequently researched protocols -Strategic Use of Evidence, the Verifiability Approach and Cognitive Credibility Assessment- by presenting their theoretical rationales and empirical support. We also discuss the similarities and differences between the three protocols. Despite the evidence that these three verbal lie detection interview protocols work, they are not frequently used in practice. We finish the article with discussing possible reasons why this is the case.