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Intergenerational Equity with Individual Impatience in an OLG Model of Optimal and Sustainable Growth

Author

Listed:
  • Lee H. Endress

    (University of Hawaii at Manoa)

  • Sittidaj Pongkijvorasin

    (Chulalongkorn University)

  • James Roumasset

    (University of Hawaii at Manoa)

  • Christopher Wada

    (University of Hawaii Economic Research Organization)

Abstract

Among the ethical objections to intergenerational impartiality is the violation of consumer sovereignty given that individuals are impatient. We accommodate that concern by distinguishing intra- and inter-generational discounting in an OLG model suitable for analyzing sustainability issues. Under the assumption of constant elasticity of marginal felicity, the optimum trajectory of aggregate consumption is guided, via the Ramsey condition, by the intergenerational discount rate but not the personal discount rate. In an economy with produced capital and a renewable resource, intergenerational neutrality results in a sustained growth path, without the necessity of a sustainability constraint, even in the presence of intragenerational impatience. We also find that green net national product remains constant along the optimal approach path to golden rule consumption.

Suggested Citation

  • Lee H. Endress & Sittidaj Pongkijvorasin & James Roumasset & Christopher Wada, 2013. "Intergenerational Equity with Individual Impatience in an OLG Model of Optimal and Sustainable Growth," Working Papers 2013-9, University of Hawaii Economic Research Organization, University of Hawaii at Manoa.
    • Handle: RePEc:hae:wpaper:2013-9
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    More about this item

    Keywords

    Sustainability of optimal growth; intergenerational equity; intra-generational discounting; renewable resources; GNNP;
    All these keywords.

    JEL classification:

    • Q56 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environment and Development; Environment and Trade; Sustainability; Environmental Accounts and Accounting; Environmental Equity; Population Growth
    • Q41 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Demand and Supply; Prices
    • Q01 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - General - - - Sustainable Development

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