Researchers at the Yerkes National Primate Research Center, Emory University, have demonstrated for the first time rhesus monkeys and humans share a specific perceptual mechanism, configural perception, for discriminating among the numerous faces they encounter daily. The study, reported in the June 25 online issue of Current Biology, provides insight into the evolution of the critical human social skill of facial recognition, which enables us to form relationships and interact appropriately with others.