Memberships[edit]
member of the American Academy of Arts and Sciences, National Academy of Sciences, Fellow of Royal Society of London
fellow of the American Philosophical Society and the British Academy;
member and past President (1961) of the American Economic Association
member of the editorial board and past-President (1951) of the Econometric Society
fellow, council member and past Vice-President of the Royal Economic Society.
member of Phi Beta Kappa.