US NATIONAL LIBRARY OF MEDICINE / SCIENCE PHOTO LIBRARY US NATIONAL LIBRARY OF MEDICINE / SCIENCE PHOTO LIBRARY
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Robert Mearns Yerkes (1876-1956), US psychologist. Yerkes worked in the fields of comparative psychology and intelligence testing. He also worked in ethology and primatology. He supported eugenics, and worked on studies of race and intelligence. He was professor of psychobiology from 1924 at Yale University. His work with chimpanzees is documented in 'Almost Human' (1924). The Yerkes National Primate Research Center is named in his honour.
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