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How certain are we about the certainty-equivalent long term social discount rate?

Listed author(s):
  • Mark C. Freeman
  • Ben Groom

The case for using declining social discount rates when the future is uncertain is now widely accepted in both academic and policy circles. We present sharp upper and lower bounds for this term structure when we have limited knowledge about the nature of our uncertainty. At horizons beyond 75 years, these bounds are widely spread even if there is agreement on the support and first four moments of the relevant underlying probability distribution. Hence, even in the unlikely event that there is consensus between experts on the primitives of the social discount rate, estimates of the present value of intergenerational costs and benefits, such as the Social Cost of Carbon, can potentially lie anywhere within a wide range. This makes it di� cult to prescribe crisp policy recommendations for long-term investments.

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File URL: http://www.lse.ac.uk/GranthamInstitute/wp-content/uploads/2014/02/WP138-How-certain-about-certainty-equivalent-long-term-social-discount-rate.pdf
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Paper provided by Grantham Research Institute on Climate Change and the Environment in its series GRI Working Papers with number 138.

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Date of creation: Oct 2013
Handle: RePEc:lsg:lsgwps:wp138
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  1. Elyès Jouini & Jean-Michel Marin & Clotilde Napp, 2010. "Discounting and Divergence of Opinion," Post-Print halshs-00176636, HAL.
  2. Moritz Drupp & Mark Freeman & Ben Groom & Frikk Nesje, 2015. "Discounting disentangled: an expert survey on the determinants of the long-term social discount rate," GRI Working Papers 196a, Grantham Research Institute on Climate Change and the Environment.
  3. 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.
  4. Martin L. Weitzman, 2011. "Fat-Tailed Uncertainty in the Economics of Catastrophic Climate Change," Review of Environmental Economics and Policy, Association of Environmental and Resource Economists, vol. 5(2), pages 275-292, Summer.
  5. Arrow, K. & Cropper, M. & Gollier, C. & Groom, B. & Heal, G. & Newell, R. & Nordhaus, W. & Pindyck, R. & Pizer, W. & Portney, P. & Sterner, T. & Tol, R. S. J. & Weitzman, Martin L., 2013. "Determining Benefits and Costs for Future Generations," Scholarly Articles 12841963, Harvard University Department of Economics.
  6. Andrew Ang & Jun Liu, 2004. "How to Discount Cashflows with Time-Varying Expected Returns," Journal of Finance, American Finance Association, vol. 59(6), pages 2745-2783, December.
  7. Pok-sang Lam & Stephen G. Cecchetti & Nelson C. Mark, 2000. "Asset Pricing with Distorted Beliefs: Are Equity Returns Too Good to Be True?," American Economic Review, American Economic Association, vol. 90(4), pages 787-805, September.
  8. repec:dau:papers:123456789/2326 is not listed on IDEAS
  9. GOLLIER Christian, 2008. "Should we discount the far-distant future at its lowest possible rate?," LERNA Working Papers 08.30.274, LERNA, University of Toulouse.
  10. Traeger, Christian P., 2012. "What’s the Rate? Disentangling the Weitzman and the Gollier Effect," CUDARE Working Paper Series 1121, University of California at Berkeley, Department of Agricultural and Resource Economics and Policy.
  11. Martin L. Weitzman, 2009. "On Modeling and Interpreting the Economics of Catastrophic Climate Change," The Review of Economics and Statistics, MIT Press, vol. 91(1), pages 1-19, February.
  12. repec:dau:papers:123456789/11956 is not listed on IDEAS
  13. Partha Dasgupta, 2008. "Discounting climate change," Journal of Risk and Uncertainty, Springer, vol. 37(2), pages 141-169, December.
  14. Martin L. Weitzman, 1998. "Gamma Discounting," Harvard Institute of Economic Research Working Papers 1843, Harvard - Institute of Economic Research.
  15. Peter Klibanoff & Massimo Marinacci & Sujoy Mukerji, 2011. "Definitions of ambiguous events and the smooth ambiguity model," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 48(2), pages 399-424, October.
  16. Christian Gollier, 2012. "Pricing the Planet's Future: The Economics of Discounting in an Uncertain World," Economics Books, Princeton University Press, edition 1, number 9894.
  17. Mark C. Freeman, 2013. "Biodiversity valuation and the discount rate problem," Accounting, Auditing & Accountability Journal, Emerald Group Publishing, vol. 26(5), pages 715-745, June.
  18. Newell, Richard G. & Pizer, William A., 2003. "Discounting the distant future: how much do uncertain rates increase valuations?," Journal of Environmental Economics and Management, Elsevier, vol. 46(1), pages 52-71, July.
  19. Mark C. Freeman & Ben Groom & Ekaterini Panopoulou & Theologos Pantelidis, 2013. "Declining discount rates and the Fisher Effect: Inflated past, discounted future?," GRI Working Papers 109, Grantham Research Institute on Climate Change and the Environment.
  20. Robert S. Pindyck, 2015. "The Use and Misuse of Models for Climate Policy," NBER Working Papers 21097, National Bureau of Economic Research, Inc.
  21. Cameron Hepburn & Phoebe Koundouri & Ekaterini Panopoulou & Theologos Pantelidis, 2006. "Social Discounting Under Uncertainty: A cross-country comparison," The Institute for International Integration Studies Discussion Paper Series iiisdp177, IIIS.
  22. Christian Gollier & Richard Zeckhauser, 2005. "Aggregation of Heterogeneous Time Preferences," Journal of Political Economy, University of Chicago Press, vol. 113(4), pages 878-896, August.
  23. Li, Chuan-Zhong & Lofgren, Karl-Gustaf, 2000. "Renewable Resources and Economic Sustainability: A Dynamic Analysis with Heterogeneous Time Preferences," Journal of Environmental Economics and Management, Elsevier, vol. 40(3), pages 236-250, November.
  24. Kenneth J. Arrow & Maureen L. Cropper & Christian Gollier & Ben Groom & Geoffrey M. Heal & Richard G. Newell & William D. Nordhaus & Robert S. Pindyck & William A. Pizer & Paul R. Portney & Thomas Ste, 2014. "Editor's Choice Should Governments Use a Declining Discount Rate in Project Analysis?," Review of Environmental Economics and Policy, Association of Environmental and Resource Economists, vol. 8(2), pages 145-163.
  25. Iverson, Terrence, 2013. "Minimax regret discounting," Journal of Environmental Economics and Management, Elsevier, vol. 66(3), pages 598-608.
  26. Traeger, Christian P., 2012. "Why uncertainty matters - discounting under intertemporal risk aversion and ambiguity," Department of Agricultural & Resource Economics, UC Berkeley, Working Paper Series qt2w614303, Department of Agricultural & Resource Economics, UC Berkeley.
  27. Gollier, Christian & Weitzman, Martin L., 2010. "How should the distant future be discounted when discount rates are uncertain?," Economics Letters, Elsevier, vol. 107(3), pages 350-353, June.
  28. Freeman, Mark C., 2010. "Yes, we should discount the far-distant future at its lowest possible rate: A resolution of the Weitzman-Gollier puzzle," Economics - The Open-Access, Open-Assessment E-Journal, Kiel Institute for the World Economy (IfW), vol. 4, pages 1-21.
  29. William D. Nordhaus, 2007. "A Review of the Stern Review on the Economics of Climate Change," Journal of Economic Literature, American Economic Association, vol. 45(3), pages 686-702, September.
  30. Christian Gollier & Phoebe Koundouri & Theologos Pantelidis, 2008. "Declining discount rates: Economic justifications and implications for long-run policy," Economic Policy, CEPR;CES;MSH, vol. 23, pages 757-795, October.
  31. Cox, John C & Ingersoll, Jonathan E, Jr & Ross, Stephen A, 1981. "A Re-examination of Traditional Hypotheses about the Term Structure of Interest Rates," Journal of Finance, American Finance Association, vol. 36(4), pages 769-799, September.
  32. Gollier, Christian, 2014. "Gamma discounters are short-termist," TSE Working Papers 14-499, Toulouse School of Economics (TSE), revised Oct 2014.
  33. Jouini, Elyès & Napp, Clotilde, 2014. "How to aggregate experts' discount rates: An equilibrium approach," Economic Modelling, Elsevier, vol. 36(C), pages 235-243.
  34. Phoebe Koundouri & Theologos Pantelidis & Ben Groom & Ekaterini Panopoulou, 2007. "Discounting the distant future: How much does model selection affect the certainty equivalent rate?," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 22(3), pages 641-656.
  35. Arrow, Kenneth J. & Cropper, Maureen L. & Gollier, Christian & Groom, Ben & Heal, Geoffrey M. & Newell, Richard G. & Nordhaus, William D. & Pindyck, Robert S. & Pizer, William A. & Portney, Paul R. & , 2012. "How Should Benefits and Costs Be Discounted in an Intergenerational Context? The Views of an Expert Panel," Discussion Papers dp-12-53, Resources For the Future.
  36. Elyès Jouini & Clotilde Napp, 2014. "How to aggregate experts' discount rates: an equilibrium approach," Post-Print halshs-00927269, HAL.
  37. Maureen L. Cropper & Mark C. Freeman & Ben Groom & William A. Pizer, 2014. "Declining discount rates," LSE Research Online Documents on Economics 57052, London School of Economics and Political Science, LSE Library.
  38. Nicholas Stern, 2008. "The Economics of Climate Change," American Economic Review, American Economic Association, vol. 98(2), pages 1-37, May.
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