Professor Baroness Greenfield believes the growth of internet “friendships”， as well as greater use of computer games, could effectively “rewire” the brain.

　　This can result in reduced concentration, a need for instant satisfaction on poor non­verbal skills, such as the ability to make eye contact during conversations.

　　More than 750 million people across the world use Facebook to share photographs and videos and post regular updates of their movements and thoughts. Millions have also signed up to Twitter, the “micro­blogging” service that lets members circulate short text and picture messages about themselves.

　　Baroness Greenfield said, “What concerns me is the banality of so much that goes out on Twitter.” Why should someone be interested in what someone else has had for breakfast? It reminds me of a small child saying，“Look at me Mummy, I’m doing this.”， “Look at me Mummy, Im doing that.”

　　“It’s almost as if they’re in some kind of identity crisis.” The academic suggested that some Facebook users feel the need to become “mini­celebrities”， who are watched and admired by others on a daily basis. They do things that are “Facebook worthy” because the only way they can define themselves is by people knowing about them.

　　“It’s almost as if people are living in a world that’s not a real world, but a world where what counts is what people think of you or (if they) can click on you，” she said.

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