A study at Portsmouth University found that people blink less frequently when lying and then blink faster than normal after completing the lie. Liars blinked less while lying and much more afterward.
According to a study conducted at Portsmouth University in 2008, there is a very simple way to tell if someone is lying: there is no need for a polygraph test. The study indicated that you can tell if someone is lying by looking at how often they blink. People tend to blink less frequently when they lie, and then blink faster than normal after completing the lie. In the study, 26 volunteers were presented with different scenarios and then asked to answer questions about their business, which required some of them to lie. Each volunteer’s eye activity was monitored with the use of electrodes. When the results were compared, the researchers found that the truth tellers maintained the same number of blinks both during and after their responses. Liars, on the other hand, blinked less frequently while lying and much more afterward. Researchers believe that the increased mental effort required to tell a lie causes people to blink less while speaking, as they are focusing on the lie. Other studies have also indicated that as cognitive demand increases, blinking decreases.
Learn more about flashing:
Blinking cleanses and moisturizes the eyes.
On average, people blink once every four seconds.
Hamsters only wink one eye at a time.
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