It's Not Too Difficult to Fool the Public with Manipulated Images

Researchers led by Sophie Nightingale from the Department of Psychology asked 659 people aged 13-70 to view a set of images of ordinary scenes. The researchers digitally altered the photographs in subtle, plausible ways. They airbrushed faces, whitened teeth, and added or removed items from the frame.  Thirty five percent of the manipulated images passed unnoticed. Half of the original, unaltered images were correctly identified.