Edmund Strother Phelps (born July 26, 1933) is an American economist and the recipient of the 2006 Nobel Memorial Prize in Economic Sciences.
Early in his career, he became known for his research at Yale's Cowles Foundation in the first half of the 1960s on the sources of economic growth. His demonstration of the golden rule savings rate, a concept related to work by John von Neumann, started a wave of research on how much a nation should spend on present consumption rather than save and invest for future generations.
Phelps was at the University of Pennsylvania from 1966 to 1971 and moved to Columbia University in 1971. His most seminal work inserted a microfoundation, one featuring imperfect information, incomplete knowledge and expectations about wages and prices, to support a macroeconomic theory of employment determination and price-wage dynamics. That led to his development of the natural rate of unemployment: its existence and the mechanism governing its size. In the early 2000s, he turned to the study of business innovation.
He is the founding director, since 2001, of Columbia's Center on Capitalism and Society. He was McVickar Professor of Political Economy at Columbia from 1982 to 2021. On January 1, 2022, his title changed to McVickar Professor Emeritus of Political Economy.
Early life and education
Phelps was born on July 26, 1933, in Evanston, Illinois, and he moved with his family to Hastings-on-Hudson, New York when he was six, where he spent his school years. In 1951, he went to Amherst College for his undergraduate education. At his father's advice, Phelps enrolled in his first economics course in his second year at Amherst. Economist James Nelson gave the course, which was based on the famous textbook Economics by Paul Samuelson. Phelps was strongly impressed with the possibility of applying formal analysis to business. He quickly became aware of an important unsolved problem with the existing economic theory and the existing gap between microeconomics and macroeconomics.
After receiving his B.A. at Amherst in 1955, Phelps went to Yale University for graduate studies. At Yale, he studied under future Nobel laureates James Tobin and Thomas Schelling, among others. Phelps was also strongly influenced by William Fellner whose course emphasized the expectations of agents. Phelps received his Ph.D. in Economics from Yale in 1959.
Research in 1960s and 1970s
After receiving his Ph.D., Phelps went to work as an economist for the RAND Corporation. However, feeling he could not pursue macroeconomics at RAND (which focused on defense work), Phelps decided to return to the academic world. In 1960, he took a research position at the Cowles Foundation while he was also teaching at Yale. At the Cowles Foundation, his research focused mainly on neoclassical growth theory, following the seminal work of Robert Solow. As part of his research, in 1961 Phelps published a famous paper on the Golden Rule savings rate, one of his major contributions to economic science. He also wrote papers dealing with other areas of economic theory, such as monetary economics or Ricardian equivalence and its relation to optimal growth.
His position at Cowles gave Phelps the chance to interact with Arthur Okun and other notables in the field. He was able to collaborate with other top economists working on growth theory, including David Cass and fellow Nobelist Tjalling Koopmans. During the 1962–63 academic year, Phelps visited MIT, where he was in contact with future Nobel Prize winners Paul Samuelson, Robert Solow and Franco Modigliani.