Do Social Websites Harm Young Minds?

One scientist says 'Yes'.

Neuroscientist Susan Greenfield, an Oxford University neuroscientist, says that social networking websites are causing alarming changes in the brains of young users. Websites such as Facebook and Twitter are said to shorten attention spans, make young people more self-centered, and encourage instant gratification.

Facebook claims more than 150 million users, while Twitter has around 6 million. While these sites are considered extremely popular, as well as profitable, a number of psychologists and neuroscientists believe that they may be doing more harm than good.

Greenfield believes that repeated exposure could effectively "rewire" the brain. Other factors include computer games and fast-paced television shows.

"We know how small babies need constant reassurance that they exist. My fear is that these technologies are infantilising the brain into the state of small children who are attracted by buzzing noises and bright lights, who have a small attention span and who live for the moment," said Greenfield.

Earlier this month, speaking before the House of Lords in England, Greenfied argued that exposure to instant messaging, computer games, chat rooms and social networking sites may leave us with a generation with poor attention spans.