Granville Stanley Hall (February 1, 1844 – April 24, 1924) was an American psychologist and educator who earned the first doctorate in psychology awarded in the United States of America at Harvard University in the nineteenth century. His interests focused on human life span development and evolutionary theory. Hall was the first president of the American Psychological Association and the first president of Clark University. A 2002 survey by Review of General Psychology ranked Hall as the 72nd most cited psychologist of the 20th century, in a tie with Lewis Terman.
