James McKeen Cattell (May 25, 1860 – January 20, 1944), American psychologist, was the first professor of psychology in the United States, teaching at the University of Pennsylvania, and long-time editor and publisher of scientific journals and publications, most notably the journal Science. He also served on the board of trustees for Science Service, now known as Society for Science & the Public (or SSP), from 1921–1944.