Biggest liars will look you straight in eye
If you think you can spot a liar by their shifty gaze and hesitant manner, you might need to think again.
New research suggests that the most untruthful people are likely to look you straight in the eye and give confident, well-thought-out responses.
They are also likely to grimace, make excessive hand gestures and use more vocal fill words such as 'um' and 'err,' according to experts at the University of Michigan.
"There are clues that humans give naturally when they are being deceptive, but we're not paying close enough attention to pick them up," said project leader Dr Rada Mihalcea.
The researchers have developed the first lie-detecting software based on video footage of 120 court cases in the US, which can spot someone who is lying 75pc of the time. In comparison, humans could spot a liar just 50pc of the time, no better than flipping a coin.
Previously, psychologists and law enforcers have believed that liars tend to give hesitant answers and will often avoid eye contact. But the new study suggests the opposite and is likely to be more accurate because previous studies have been based on lab experiments.