Silvan S. Tomkins, PhD, (1911-1991) was one of the most influential theorists of 20th-century psychology and is generally considered the founder of modern affective science. He was educated at the University of Pennsylvania, where he studied psychology and playwriting as an undergraduate, then philosophy as a graduate student. In 1937, while attending Harvard University on a post-doctoral fellowship, he met Professor Henry A. Murray, the prominent personality theorist and then director of Harvard's Psychological Clinic. Under Murray's influence, Tomkins dedicated his professional career to stu...