The effects of uncertainty on optimal consumption
When marginal utility is convex and there is pure labour income uncertainty, certain results are well-known. Asset return uncertainty is often assumed to have qualitatively similar effects; see e.g. Skinner (1988). We show that this assumption is not correct. Asset return uncertainty gives rise to an additional term in the Euler equation, which by introducing a role for current cash-in-hand, may work in the opposite direction to the precautionary motive, leading to ambiguity in the slope of the expected consumption time profile. We present a linearised version of the Euler equation, and an associated closed form solution, in order to provide intuition for these results. Numerical analysis indicates that the approximation is reasonable for empirically plausible estimates of the variances of the underlying disturbances.
(This abstract was borrowed from another version of this item.)
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Hall, Robert E, 1978. "Stochastic Implications of the Life Cycle-Permanent Income Hypothesis: Theory and Evidence," Journal of Political Economy, University of Chicago Press, vol. 86(6), pages 971-87, December.
- Olivier J. Blanchard, 1984.
"Debt, Deficits and Finite Horizons,"
NBER Working Papers
1389, National Bureau of Economic Research, Inc.
- Deaton, Angus, 1992. "Understanding Consumption," OUP Catalogue, Oxford University Press, number 9780198288244, December.
- Stephen P. Zeldes, 1989. "Optimal Consumption with Stochastic Income: Deviations from Certainty Equivalence," The Quarterly Journal of Economics, Oxford University Press, vol. 104(2), pages 275-298.
- Miles, David, 1997. "A Household Level Study of the Determinants of Incomes and Consumption," Economic Journal, Royal Economic Society, vol. 107(440), pages 1-25, January.
- Christopher D Carroll, 1997.
"Death to the Log-Linearized Consumption euler Equation! (And Very Poor Health to the Second-Order Approximation),"
Economics Working Paper Archive
390, The Johns Hopkins University,Department of Economics.
- Carroll Christopher Dixon, 2001. "Death to the Log-Linearized Consumption Euler Equation! (And Very Poor Health to the Second-Order Approximation)," The B.E. Journal of Macroeconomics, De Gruyter, vol. 1(1), pages 1-38, April.
- Christopher D. Carroll, 1997. "Death to the Log-Linearized Consumption Euler Equation! (And Very Poor Health to the Second-Order Approximation)," NBER Working Papers 6298, National Bureau of Economic Research, Inc.
- Olivier Jean Blanchard & Stanley Fischer, 1989. "Lectures on Macroeconomics," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262022834, December.
- Binder, M. & Pesaran, M. H. & Samiei, S. H., 1998. "Analytical and Numerical Solution of Finite-horizon Nonlinear Rational Expectations Models," Cambridge Working Papers in Economics 9808, Faculty of Economics, University of Cambridge.
- Christopher D. Carroll & Miles S. Kimball, 1995.
"On the concavity of the consumption function,"
Finance and Economics Discussion Series
95-10, Board of Governors of the Federal Reserve System (U.S.).
- Deaton, Angus, 1991.
"Saving and Liquidity Constraints,"
Econometric Society, vol. 59(5), pages 1221-48, September.
- Siegel, Jeremy J., 1992. "The real rate of interest from 1800-1990 : A study of the U.S. and the U.K," Journal of Monetary Economics, Elsevier, vol. 29(2), pages 227-252, April.
- Frederick van der Ploeg, 1993. "A Closed-form Solution for a Model of Precautionary Saving," Review of Economic Studies, Oxford University Press, vol. 60(2), pages 385-395.
- Caballero, Ricardo J, 1991. "Earnings Uncertainty and Aggregate Wealth Accumulation," American Economic Review, American Economic Association, vol. 81(4), pages 859-71, September.
- Philippe Weil, 1993. "Precautionary Savings and the Permanent Income Hypothesis," Review of Economic Studies, Oxford University Press, vol. 60(2), pages 367-383.
- Neave, Edwin H., 1971. "Multiperiod consumption-investment decisions and risk preference," Journal of Economic Theory, Elsevier, vol. 3(1), pages 40-53, March.
- Gabriel Talmain, 1994. "Exact and Approximate Solutions to the Problem of Precautionary Savings," Discussion Papers 94-04, University at Albany, SUNY, Department of Economics.
When requesting a correction, please mention this item's handle: RePEc:eee:dyncon:v:25:y:2001:i:1-2:p:185-212. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Shamier, Wendy)
If references are entirely missing, you can add them using this form.