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It is very easy to find out if a person is narcissistic. In a study it is revealed that plucked eyebrows, exposed cleavage and a cheery smile - these are some of the signals which can help you make out whether or not a person is a narcissist.

According to the study, observers are quick to pick up on such signals and use them to categorise people at a glance. The psychologists believe that such accuracy and speed of detection may have evolved to allow people to steer clear of narcissists and thus avoid the downsides of their behaviour, which include self-deception and a lack of regard for others.

The findings emerged from the first academic investigation into the physical appearance of narcissists.

"We found that narcissism does have a distinct physical signature, and can be detected from physical appearance alone," Dr Peter Rentfrow, a psychologist at the University of Cambridge, was quoted.