Ed J McKeen CattellJames McKeen Cattell was born on 25 May 1860 in Easton, Pennsylvania, to William Cassady Cattell. He pursued higher education at Lafayette College before continuing his studies in Germany under prominent scholars Wilhelm Wundt and Hermann Lotze at th University of Gottingen and Leipzig University. Cattell became the first professor of psychology in the United States, teaching at the University of Pennsylvania in Philadelphia, where he helped establish psychology as a rigorous scientific discipline. His work spanned experimental psychology, mental testing, and the application of statistical methods to human behavior. Cattell emphasized empirical research and the measurement of individual differences, influencing both academic study and practical assessment in education and industry. Beyond his academic contributions, he fostered the dissemination of scientific knowledge through editorial work in psychology and allied fields. He was also the father of Psyche Cattell and Jaques Cattell. James McKeen Cattell died on 20 January 1944 in Lancaster, Pennsylvania, leaving a legacy as a pioneer who shaped the foundations of modern psychological science in America. Read More Read Less