“…Yet in a recent metaanalysis of 144 samples containing 9,380 speakers, providing a total of 26,866 messages, and spanning more than forty years, Hartwig and Bond (2014) found that the detectability of deception did not differ as a function of whether the speaker was a college student or nonstudent; whether the motivation to evade detection was high or low; or whether the truths and lies were accompanied by high or low levels of emotion. Indeed, recent research has shown that the ability to discriminate between truth tellers and liars can be improved only when certain theoretically based interview protocols are used (Granhag & Hartwig, 2015;Hartwig, Granhag, & Luke, 2014;Vrij, 2015) and when training focuses on the most diagnostic cues (Hauch, Sporer, Michael, & Meissner, in press). …”