Susan Greenfield: This Is Your Brain on Cognitionbr Australian Broadcasting Corporation - Sydney Opera Housebr With a recent study showing that up to 97 of Australians aged 16-17 use at least one social networking site, should we be worried? Increasingly children are raised in front of television and computer screens. What are the effects that this can have on brain development? Do websites like Twitter and Facebook contribute to a culture of short term attentiveness?Baroness Susan Greenfield is a neuroscientist at Oxford University and argues that we should be increasingly wary of how the changing technological environment is affecting the minds of the young.