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If we told you not to move your eyebrows – not even a fraction – do you think you could do so in a high-stress situation? Well, according to Dr Mark Frank, a world-renowned social psychologist, you would be moving them even if you thought you weren’t. Involuntary eyebrow twitches are just one of the many facial micro-expressions caused by emotional responses in the brain, which frequently give criminals away when they’re being questioned. Allow Dr Frank to take you inside the extraordinary world of interrogation, polygraphs, and airport police.
Hosted by Pippa Woodhead
Dr. Mark Frank
State University of New York