Robert Alan Dahl (; December 17, 1915 – February 5, 2014) was an American political theorist and Sterling Professor of Political Science at Yale University. He established the pluralist theory of democracy—in which political outcomes are enacted through competitive, if unequal, interest groups—and introduced "polyarchy" as a descriptor of actual democratic governance. An originator of "empirical theory" and known for advancing behavioralist characterizations of political power, Dahl's research focused on the nature of decision making in actual institutions, such as American cities. He is the most important scholar associated with the pluralist approach to describing and understanding both city and national power structures. In addition to his work on the descriptive theory of democracy, he was long occupied with the formulation of the constituent elements of democracy considered as a theoretical but realizable ideal. By virtue of the cogency, clarity, and veracity of his portrayal of some of the key characteristics of realizable-ideal democracy, as well as his descriptive analysis of the dynamics of modern pluralist-democracy, he is considered one of the greatest theorists of democracy in history. Biography Dahl was born in Inwood, Iowa, on December 17, 1915. His father Peter came from a Norwegian family, while his mother Vera came from a Protestant American background. He received his undergraduate degree from the University of Washington in 1936 and his Ph.D. from Yale in 1940. After receiving his Ph.D., Dahl worked in the government in Washington DC and then volunteered for a spell in the US army. He served in Europe during World War II, was the leader of a small reconnaissance platoon in an infantry regiment, and earned a Bronze Star. He led a platoon that took part in a major offensive in November 1944. After World War II, Dahl returned to Yale in 1946, where he was offered a temporary position teaching American government. The position became permanent, and Dahl remained at Yale his entire career, until his retirement in 1986. He was Eugene Meyer Professor of Political Science from 1955 to 1964, and Sterling Professor from 1964 to 1986. Dahl was departmental chair from 1957 to 1962. Dahl served as president of the American Political Science Association in 1966/67. Dahl was married to Mary Bartlett until her passing in 1970, and then to Ann Sale, a Presbyterian. Awards and honors Over his career, Dahl received many prestigious awards and prizes. 1950 Guggenheim fellow 1955–1956 Fellow of