James McKeen Cattell

James McKeen Cattell was an American psychologist, born in Easton, Pennsylvania in 1860 and died in 1944, who was the first professor of psychology in the United States, teaching at the University of Pennsylvania. He took his doctorate under Wilhelm Wundt at Leipzig in 1886 and was the first American to publish a psychology dissertation, titled Psychometrische Untersuchungen. He later lectured at Cambridge and taught at Columbia, edited and published Science and other journals, and helped establish psychology as a legitimate science. His public opposition to American involvement in World War I led to his dismissal from Columbia University, which later led many American universities to establish academic tenure.