I smile when I see movies portraying savvy detectives revered for their ability to separate truth from lies in a suspect’s story. And I cringe when people believe the lies of politicians and other leaders despite evidence from their own behaviour—including recordings of their statements. Sadly, interviewers are easily deceived. And despite my experience in clinical forensic work, I too have been deceived. We have a vested interest in detecting the truth—especially when we stand to lose or gain from information. So, I am going to draw on some research summarized by Aldert Vrij to make a few points in this post. 1. Eye-contact: Liars do not look away more than truth-tellers. Liars are focused on overcoming the well-known avoidance belief. 2. Squirm effect : Liars do not fidget or move around more than truth-tellers. It takes mental effort to deceive someone. Liars move less. 3. Nonverbal cue mystique : Interviewers (including new counsellors) are often told to pa...
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