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The science of lying, with Professor Richard Wiseman

Instant Genius

00:00

Is That a Good Lesson to Take Away?

Lying is cognitively difficult. So what you tend to look for in lie detection work is a deviation away from the person's norm, as it were,. The way they usually are behave. And so some people just scratch their noses a lot. You're looking for them more hesitations and bigger distancing between the end of the question and the beginning of the answer. It's no use to look at one piece of action and go, Hey, look, the person looked away from or maybe they do that all the time. Maybe that's just their general style. I say you can practice your outward behavior. So you can, if you're really good at it, you can hide

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