November 2007: A study by Dario Sacchi, Franca Agnoli and Elizabeth Loftus, published in the journal Applied Cognitive Psychology, shows that people's memories of events can be altered by viewing doctored images. For example, when presented with doctored images of the 1989 Tiananmen Square protest participants recalled the event as larger and more violent (shown in the lower panel is the doctored image in which the crowd was added). SOURCE: http://www.cs.dartmouth.edu/farid/research/digitaltampering/

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