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Special Section on Social Cognition 1 (of 2)

Caption: The mother of a young infant is groomed by an adult male, on the left, and another adult female, on the right. This image relates to an article that appeared in the Sept. 7, 2007, issue of the journal Science, published by AAAS. The study, by Dr. Joan Silk University of California, Los Angeles in Los Angeles, Calif., was titled "Social Components of Fitness in Primate Groups."

Credit: Photo courtesy of Joan Silk

Usage Restrictions: Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission.