(born 1920), U.S. economist and cowinner (with Robert W. Fogel) of the 1993 Nobel prize in economics, born in Cambridge, Mass. North earned a Ph.D. in economics from the University of California, Berkeley, in 1952, and was professor of economics from 1950 to 1983 at the University of Washington. In 1983 he left to teach economics at Washington University. He also served as director of both the Institute for Economic Research (from 1960 to 1966) and the National Bureau of Economic Research (from 1967 to 1987). In his many books, including ‘The Rise of the Western World' (1973), ‘Structure and Change in Economic History' (1981), and ‘Institutions, Institutional Change and Economic Performance' (1990), North demonstrated that market economies are closely linked with social and political institutions. As these institutions change over time, so does economic theory. North was given the Nobel prize for applying economic theory and quantitative methods to historical events and for helping to found cliometrics, a branch of economics based on precise statistical analysis and objective measurements of history. see also in index Nobel Prizewinners,