The best way to spot a liar is to look them in the eyes, according to scientists who say the number of times a person blinks will show if they are speaking the truth. Liars blink less frequently than normal during the lie, and **then speed up** to around eight times faster than usual afterwards. Researchers studied a group of volunteers as they went about their normal business for ten minutes. A second group were asked to steal an exam paper from an office, then to deny having taken it. The groups were then asked each to recall exactly what they had been doing. Results show that when the questions were being asked and the answers given, the blink rate in the liars went down. In contrast the truthful groups rate went up, though this could have been down to test anxiety. Afterwards, the blink rate of the liars increased rapidly, while that of the truth tellers remained the same. Researchers believe the increased effort involved in telling fibs could be the reason why liars do not blink during the act of lying.
Posted on: Mon, 08 Dec 2014 04:56:08 +0000
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