(initially as a visiting professor in 1957 before becoming a permanent professor in 1958) until 1967; and again at Harvard until 1982. He became a professor at Harvard in 1967, becoming Stanfield Professor of International Peace at Harvard in 1971, a position he held until his death. At Yale University, Deutsch developed the Yale Political Data Program, which collected quantitative indicators for theory testing. Deutsch worked extensively on cybernetics, on the application of simulation and system dynamics models to the study of social, political, and economic problems, known as wicked problems. He built upon earlier efforts at world modeling such as those advanced and advocated by authors of the Club of Rome such as Limits to Growth by Donella Meadows, et al. (1972). He introduced new concepts such as security community to the literature. He held several other prestigious positions; he was a member of the board of World Society Foundation in Zürich, Switzerland from 1984 onwards. He was also elected President of the American Political Science Association in 1969, of the International Political Science Association in 1976, and of the Society for General Systems Research in 1983. From 1977 to 1987, he was Director of the Social Science Research Center Berlin (Wissenschaftszentrum Berlin für Sozialforschung, WZB) in Berlin. Karl W. Deutsch in his book The Nerves of Government: Models of Political Communication and Control hypothesized about “information elites, controlling means of mass communication and, accordingly, power institutions, the functioning of which is based on the use of information in their activities.” Personal life He died in Cambridge, Massachusetts, on 1 November 1992. He has two daughters, and three grandchildren. See also Transactionalism Karl Deutsch Award by International Political Science Association Karl Deutsch Award by International Studies Association Selected publications Nationalism and Social Communication , 1953, 1966 — from a dissertation at Harvard, published by MIT Press. The Nerves of Government: Models of Political Communication and Control (1966), Arms Control and the Atlantic Alliance (1967), Nationalism and its Alternatives (1969), Problems of World Modeling: Political and Social Implications (1977), Published by HarperCollins Publishers. The Analysis of International Relations (1978), by Prentice-Hall, Tides Among Nations (1979), Politics and Government (1980), published by Houghton-Mifflin, Comparative Government: Politics of Industrialized and Developing Nations (1981), Published by Houghton Mifflin. Voyage of the Mind, 1930–1980 an autobiographical sketch. “Karl W. Deutsch: Pioneer in the Theory of International Relations” - With a Preface by Charles Lewis