A tool has been created to analyse the hidden personality traits of frequent Twitter users.
The first psychoanalysis of the micro-blogging site aims to discover what the subconscious mind is really thinking when posts are made.
The tool, created by television psychotherapist Dr Sandra Scott and wine brand Apothic, analyses a user's most recent 3500 tweets before determining how much of a dark side they might have.
According to a study using the tool, the majority of the nation's Twitter users (72 per cent) have a dark side - with "passionate" being the most common personality trait, followed by "materialistic" and "egoist".
"Most of us have some aspect of ourselves which we are not fully aware of, a sort of 'hidden persona'," said Dr Scott, who has advised on the likes of I'm a Celebrity... Get Me Out of Here! and Big Brother in the UK.
"It is interesting to see how we can unconsciously reveal this part of ourselves through the use of social media.
"It's worth noting that just because we are not fully aware of this aspect of ourselves does not necessarily mean that it is something to shy away from.
"Our 'hidden personas' can sometimes make us appreciate ourselves more and reveal qualities that we like."
She said even outspoken celebrities had something to hide.
"When you consider celebrities, prolific tweeters such as Jeremy Clarkson and Katie Hopkins, they, like all of us, are human beings," she said.
"I think it is fair enough to say that all of us have a hidden side, we have an aspect of ourselves we are not conscious of.
"Celebrities, maybe more than most, have to be quite conscious about the image they are presenting on Twitter.
"Nonetheless, just like the rest of us, they will be revealing with every word something else they just don't want to come out."
Twitter users can analyse their tweets by using the algorithm tool at www.apothic.co.uk.
