Decomposing the social discount rate
AbstractRecent modelling of the costs and benefits of climate change has renewed debate surrounding assumptions regarding the social discount rate in analysing the impacts of environmental change. Previous literature segments the social discount rate into being influenced by two key factors; the rate of pure time preference and the elasticity of marginal utility of future consumption. These components of the social discount rate reinforce the linkages between the choice of social discount rate and intergenerational distribution. In an extension of previous work by the author on intergenerational distributional preferences, this paper discusses the relationship between intergenerational equity and the social discount rate. The work has significant policy implications given the sensitivity of Cost Benefit Analysis outcomes to assumptions regarding the social discount rate.
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Bibliographic InfoPaper provided by Australian Agricultural and Resource Economics Society in its series 2010 Conference (54th), February 10-12, 2010, Adelaide, Australia with number 59156.
Date of creation: 2010
Date of revision:
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Intergenerational equity; Social discount rate; Environmental Economics and Policy;
This paper has been announced in the following NEP Reports:
- NEP-ALL-2010-05-22 (All new papers)
- NEP-ENE-2010-05-22 (Energy Economics)
- NEP-ENV-2010-05-22 (Environmental Economics)
- NEP-MIC-2010-05-22 (Microeconomics)
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- Weitzman, Martin L., 1998. "Why the Far-Distant Future Should Be Discounted at Its Lowest Possible Rate," Journal of Environmental Economics and Management, Elsevier, vol. 36(3), pages 201-208, November.
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