The Pinocchio Effect... Lying gives you a cold nose!
NEVER mind cold feet – it’s a cold nose that might really give away your feelings.
A ‘Pinocchio effect’ which sees people’s noses get colder when they are lying could work better than a lie detector, scientists say.
Recording the temperature of someone’s face can detect if they are fibbing with 85% accuracy, the researchers found.
That is because the tip of the nose is sensitive to someone’s emotional state, and lying is a stressful activity.
Researchers worked with 60 students, who undertook tasks while being filmed by a temperature-sensitive camera.
One task was to make a telephone call in which they told a lie, such as saying they had seen a celebrity. Among the liars, 85% saw their nose temperature fall.
Another clue, seen in six out of 10, was an increase in forehead temperature because of the mental effort in planning a lie.
These temperature changes were absent in people who made honest telephone calls.
Professor Emilio Gómez Milán, at the University of Granada, said: ‘The experimental group experienced the so-called “Pinocchio effect” in the nose and the effect of mental effort in the forehead, which allowed us to monitor the lie.’
The researchers put their method’s accuracy at 10% higher than a lie detector test.