Which rates should we use to discount costs and benefits of different natures at different time horizons? We answer this question by considering a representative agent consuming two goods whose availability evolves over time in a stochastic way. We extend the Ramsey rule by taking into account the degree of substitutability between the two goods and of the uncertainty surrounding the economic and environmental growths. The rate at which environmental impacts should be discounted is in general different from the one at which monetary benefits should be discounted. We provide arguments in favor of an ecological discount rate smaller than the economic discount rate. In particular, we show that, under certainty and Cobb-Douglas preferences, the difference between the economic and the ecological discount rates equals the difference between the economic and the ecological growth rates. Using data about the link between biodiversity and economic development, I estimate that the rate at which changes in biodiversity should be discounted is 1.5%, whereas changes in consumption should be discounted at 3.2%.
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- Sterner, Thomas & Persson, U. Martin, 2007. "An Even Sterner Review: Introducing Relative Prices into the Discounting Debate," Discussion Papers dp-07-37, Resources For the Future.
- Paul R. Milgrom, 1979.
"Good Nevs and Bad News: Representation Theorems and Applications,"
407R, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Paul R. Milgrom, 1981. "Good News and Bad News: Representation Theorems and Applications," Bell Journal of Economics, The RAND Corporation, vol. 12(2), pages 380-391, Autumn.
- Weikard, Hans-Peter & Zhu, Xueqin, 2005. "Discounting and environmental quality: When should dual rates be used?," Economic Modelling, Elsevier, vol. 22(5), pages 868-878, September.
- Roger Guesnerie, 2004.
"Calcul économique et développement durable,"
DELTA Working Papers
2004-02, DELTA (Ecole normale supérieure).
- Traeger, Christian P, 2007.
"Sustainability, limited substitutability and non-constant social discount rates,"
CUDARE Working Paper Series
1045, University of California at Berkeley, Department of Agricultural and Resource Economics and Policy.
- Traeger, Christian P., 2011. "Sustainability, limited substitutability, and non-constant social discount rates," Journal of Environmental Economics and Management, Elsevier, vol. 62(2), pages 215-228, September.
- Traeger, Christian P., 2008. "Sustainability, Limited Substitutability and Non-Constant Social Discount Rates," Department of Agricultural & Resource Economics, UC Berkeley, Working Paper Series qt10d7d7n4, Department of Agricultural & Resource Economics, UC Berkeley.
- Kimball, Miles S, 1993.
"Standard Risk Aversion,"
Econometric Society, vol. 61(3), pages 589-611, May.
- Rothschild, Michael & Stiglitz, Joseph E., 1970. "Increasing risk: I. A definition," Journal of Economic Theory, Elsevier, vol. 2(3), pages 225-243, September.
- Kimball, Miles S, 1990.
"Precautionary Saving in the Small and in the Large,"
Econometric Society, vol. 58(1), pages 53-73, January.
- Miles S. Kimball, 1989. "Precautionary Saving in the Small and in the Large," NBER Working Papers 2848, National Bureau of Economic Research, Inc.
- Louis Eeckhoudt & Béatrice Rey & Harris Schlesinger, 2007.
"A Good Sign for Multivariate Risk Taking,"
INFORMS, vol. 53(1), pages 117-124, January.
- EECKHOUDT, louis & REY, Béatrice & SCHLESINGER, Harris, . "A good sign for multivariate risk taking," CORE Discussion Papers RP -1900, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Louis Eeckhoudt & Béatrice Rey & Harris Schlesinger, 2006. "A Good Sign for Multivariate Risk Taking," CESifo Working Paper Series 1796, CESifo Group Munich.
- Narayana R. Kocherlakota, 1996.
"The Equity Premium: It's Still a Puzzle,"
Journal of Economic Literature,
American Economic Association, vol. 34(1), pages 42-71, March.
- Kocherlakota, N., 1995. "The Equity Premium: It's Still a Puzzle," Working Papers 95-05, University of Iowa, Department of Economics.
- Narayana R. Kocherlakota, 1995. "The equity premium: it's still a puzzle," Discussion Paper / Institute for Empirical Macroeconomics 102, Federal Reserve Bank of Minneapolis.
- Christian Gollier, 2005.
"The Consumption-Based Determinants of the Term Structure of Discount Rates,"
CESifo Working Paper Series
1375, CESifo Group Munich.
- Gollier, Christian, 2004. "The Consumption-Based Determinants of the Term Structure of Discount Rates," IDEI Working Papers 296, Institut d'Économie Industrielle (IDEI), Toulouse.
- Gollier, Christian, 2002. "Time Horizon and the Discount Rate," Journal of Economic Theory, Elsevier, vol. 107(2), pages 463-473, December.
- EECKHOUDT, Louis & SCHLESINGER, Harris, .
"Putting risk in its proper place,"
CORE Discussion Papers RP
-1871, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Martin L. Weitzman, 2007. "Subjective Expectations and Asset-Return Puzzles," American Economic Review, American Economic Association, vol. 97(4), pages 1102-1130, September.
- Daniel L. Millimet & John A. List & Thanasis Stengos, 2003.
"The Environmental Kuznets Curve: Real Progress or Misspecified Models?,"
The Review of Economics and Statistics,
MIT Press, vol. 85(4), pages 1038-1047, November.
- Stengos, T. & Millimet, D.L. & List, J.A., 2002. "The Environmental Kuznets Curve: Real Progress or Misspecified Models?," Working Papers 2002-13, University of Guelph, Department of Economics and Finance.
- Ekaterini Panopoulou & Ben Groom & Phoebe Koundouri & Theologos Pantelidis, 2004. "An Econometric Approach To Estimating Long-Run Discount Rates," Royal Economic Society Annual Conference 2004 70, Royal Economic Society.
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