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Discounting and Welfare Analysis Over Time: Choosing the ç

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  • Jan Schumacher
  • Wolfgang Buchholz

Abstract

Based on the Ramsey equation and an ethically motivated rejection of pure utility time discount, the Stern Review on the Economics of Climate Change concentrates on the use of the elasticity of marginal utility ç in the intergenerational social welfare function. We support this position by showing that, also from the view point of sustainability, application of ç is preferable to the use of the pure time discount parameter ñ when a balanced distribution of utility across generations is to be brought about. After reviewing empirical studies on the size of ç we develop a novel axiomatic approach based on non–envy criteria by which we obtain values for ç lying in a range between 1 and 2. Whereas the starting point of the Stern Review quite explicitly is an ethical one, many critics of the Review deny this ethical stance and thus – as described in our paper – miss a crucial element of the Stern Review.

Suggested Citation

  • Jan Schumacher & Wolfgang Buchholz, 2008. "Discounting and Welfare Analysis Over Time: Choosing the ç," CESifo Working Paper Series 2230, CESifo.
    • Handle: RePEc:ces:ceswps:_2230
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    References listed on IDEAS

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    Cited by:

    1. Pálinkó, Éva & Szabó, Márta, 2012. "Application of Social Discount Rate in Public Projects," Public Finance Quarterly, Corvinus University of Budapest, vol. 57(2), pages 184-199.
    2. Wolfgang Buchholz & Jan Schumacher, 2008. "Discounting the Long-Distant Future: A Simple Explanation for the Weitzman-Gollier-Puzzle," CESifo Working Paper Series 2357, CESifo.
    3. Malakhov, Sergey, 2014. "Money flexibility, price elasticity, and elasticity of marginal utility of consumption," MPRA Paper 55928, University Library of Munich, Germany.

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