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Making Dynamic Welfare Comparisons


  • Martin L. Weitzman


For guidance in determining which items should be included in comprehensive NDP and how they should be included, reference is often made to the linearized Hamiltonian from an optimal growth problem. The paper gives a rigorous interpretation of this procedure in terms of a money-metric utility function linked to familiar elements of standard welfare theory. A key insight is that the Hamiltonian itself is a quasilinear utility function, so imposing the money-metric normalization is simply equivalent to using Marshallian consumer surplus as the appropriate measure of welfare when there are no income effects. The twin concepts of the "sustainability-equivalence principle" and the "dynamic welfare-comparison principle" are explained, and it is indicated why these two principles are important for the theory of national income accounting.

Suggested Citation

  • Martin L. Weitzman, 1999. "Making Dynamic Welfare Comparisons," Harvard Institute of Economic Research Working Papers 1859, Harvard - Institute of Economic Research.
  • Handle: RePEc:fth:harver:1859

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    References listed on IDEAS

    1. Bartik, Timothy J, 1985. "Business Location Decisions in the United States: Estimates of the Effects of Unionization, Taxes, and Other Characteristics of States," Journal of Business & Economic Statistics, American Statistical Association, vol. 3(1), pages 14-22, January.
    2. Guy Dumais & Glenn Ellison & Edward L. Glaeser, 2002. "Geographic Concentration As A Dynamic Process," The Review of Economics and Statistics, MIT Press, vol. 84(2), pages 193-204, May.
    3. Paul Krugman, 1992. "Geography and Trade," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262610868, July.
    4. Carlton, Dennis W, 1983. "The Location and Employment Choices of New Firms: An Econometric Model with Discrete and Continuous Endogenous Variables," The Review of Economics and Statistics, MIT Press, vol. 65(3), pages 440-449, August.
    5. Ellison, Glenn & Glaeser, Edward L, 1997. "Geographic Concentration in U.S. Manufacturing Industries: A Dartboard Approach," Journal of Political Economy, University of Chicago Press, vol. 105(5), pages 889-927, October.
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