. 14 1940 - (New York). 1957 1961 (University of Rochester) 1963 (Purdue University) -, (West Lafayette, Indiana). 1964 .
1964 1970 (University of Minnesota); (University of Massachusetts); 1973 1976 - (Northwestern University); 1976-1988 (Princeton University). . (Stanford University), (University of the Andes), - (Tel-Aviv University) 12 (Paris 12 Val de Marne University).
(University of Chicago), . .
1993 2000 11- .
, 1991 1993 , (School of Arts and Sciences) (University of Pennsylvania) 1988-1991 . 1973 (Econometric Society), 1988-1989 .
1984 (American Academy of Arts and Sciences); 1990 - (National Academy of Sciences); 2001- (American Philosophical Society); , , 2005 (American Economic Association).