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U.

S. and British researchers say they've discovered prosopagnosia -- or "face blindness" -- is not as rare as has been believed.

The Harvard University and ¹û¶³Ó°Ôº scientists developed diagnostic tests for the socially disabling inability to recognize or distinguish faces. They have also used a Web site () to identify such individuals.

The researchers - led by Ken Nakayama and Richard Russell at Harvard and Bradley Duchaine [¹û¶³Ó°Ôº Institute of Cognitive Neuroscience] - found evidence that prosopagnosia might affect as many as 2 percent of the population, suggesting millions of people may be face-blind. …

UPI