Spence, A. Michael

born 1943, Montclair, N.J., U.S.

U.S. economist.

He studied at Yale (B.A., 1966), Oxford (B.A./M.A., 1968), and Harvard (Ph.D., 1972) and taught at Harvard and Stanford, serving as dean of the latter's business school from 1990 to 1999. He is known for refining the theory of asymmetric information in the marketplace. His research demonstrated that in certain situations those who are better informed can improve their market return by transmitting information to those who know less; for example, auto dealers can convey the superior quality of their cars by offering warranties. For his work on "market signaling," Spence shared the 2001 Nobel Prize in Economic Sciences with George A. Akerlof and Joseph E. Stiglitz.

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▪ American economist

born 1943, Montclair, New Jersey, U.S.

      American economist who, with George A. Akerlof (Akerlof, George A.) and Joseph E. Stiglitz (Stiglitz, Joseph E.), won the Nobel Prize for Economics in 2001 for laying the foundations for the theory of markets with asymmetric information.

      Spence studied at Yale University (B.A., 1966), the University of Oxford (B.A., M.A., 1968), and Harvard University (Ph.D., 1972). He taught at Harvard and at Stanford University, serving as dean of the latter's business school from 1990 to 1999.

      Through his research on markets with asymmetric information, Spence developed the theory of “signaling” to show how better-informed individuals in the market communicate their information to the less-well-informed to avoid the problems associated with adverse selection. In his 1973 seminal paper “Job Market Signaling,” Spence demonstrated how a college degree signals a job seeker's intelligence and ability to a prospective employer. Other examples of signaling included corporations giving large dividends to demonstrate profitability and manufacturers issuing guarantees to convey the high quality of a product.

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