Dr. Tracy Alloway, Director of the Center for Memory and Learning in the Lifespan at the University of Sterling in Scotland, performed research on children between the ages of 11 and 14. She found that children who used social networking sites like Facebook improved on their IQ scores.
Dr. Alloway says using Facebook expands the memory because it makes minds work to keep up with friends.
But the psychologist says the opposite is true for Twitter. She says Twitter is an endless stream of information that's very succinct. That's also the case for Texting and YouTube. Dr. Alloway says the sites reduce the attention span and don't engage the brain in the same way as Facebook does.