Paul Samuelson - Fields of Interest

Fields of Interest

As professor of economics at the Massachusetts Institute of Technology, Samuelson worked in many fields including:

• Welfare economics, in which he popularised the Lindahl–Bowen–Samuelson conditions (criteria for deciding whether an action will improve welfare) and demonstrated in 1950 the insufficiency of a national-income index to reveal which of two social options was uniformly outside the other's (feasible) possibility function (Collected Scientific Papers, v. 2, ch. 77; Fischer, 1987, p. 236).
• Public finance theory, in which he is particularly known for his work on determining the optimal allocation of resources in the presence of both public goods and private goods.
• International economics, where he influenced the development of two important international trade models: the Balassa–Samuelson effect, and the Heckscher–Ohlin model (with the Stolper–Samuelson theorem).
• Macroeconomics, where he popularized the overlapping generations model as a way to analyze economic agents' behavior across multiple periods of time (Collected Scientific Papers, v. 1, ch. 21).
• Consumer theory, he pioneered the Revealed Preference Theory, which is a method by which it is possible to discern the best possible option, and thus define consumer's utility functions, by observing the consumer behaviour.