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Risk aversion, intertemporal substitution, and the aggregate investment-uncertainty relationship

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  • Saltari, Enrico
  • Ticchi, Davide

Abstract

We analyze the role of risk aversion and intertemporal substitution in a simple dynamic investment model. Our main finding is that risk aversion cannot by itself explain a negative relationship between aggregate investment and aggregate uncertainty, as the effect of increased uncertainty in investement also depends on the intertemporal elasticity of substitution. In particular, the relationship between aggregate investment and aggregate uncertainty is positive even if agents are very risk averse, as long as the elasticity of intertemporal substitution is low. A negative relationship requires thet the relative risk aversion and the elasticity of intertemporal substitution are both relatively high or both relatively low. We also show that the implications of our model are consistent with the available empirical evidence.

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Bibliographic Info

Article provided by Elsevier in its journal Journal of Monetary Economics.

Volume (Year): 54 (2007)
Issue (Month): 3 (April)
Pages: 622-648

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Handle: RePEc:eee:moneco:v:54:y:2007:i:3:p:622-648

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Web page: http://www.elsevier.com/locate/inca/505566

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Citations

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Cited by:
  1. Addessi, William & Saltari, Enrico, 2011. "The effect of debt tax benefits on firm investment decisions," MPRA Paper 35436, University Library of Munich, Germany.
  2. Saltari, E. & Travaglini, G., 2012. "A note on optimal capital stock and financing constraints," Economic Modelling, Elsevier, vol. 29(4), pages 1177-1180.
  3. Vasia Panousi & Dimitris Papanikolaou, 2011. "Investment, idiosyncratic risk, and ownership," Finance and Economics Discussion Series 2011-54, Board of Governors of the Federal Reserve System (U.S.).
  4. Herbst, Anthony F. & Wu, Joseph S.K. & Ho, Chi Pui, 2012. "Relationship between risk attitude and economic recovery in optimal growth theory," Global Finance Journal, Elsevier, vol. 23(3), pages 141-150.
  5. Julien Hugonnier & Florian Pelgrin & Pascal St-Amour, 2010. "A structural analysis of the health expenditures and portfolio choices of retired agents," Swiss Finance Institute Research Paper Series 10-29, Swiss Finance Institute.
  6. Gianluca Femminis, 2012. "Risk aversion heterogeneity and the investment-uncertainty relationship," DISCE - Quaderni dell'Istituto di Teoria Economica e Metodi Quantitativi itemq1260, Università Cattolica del Sacro Cuore, Dipartimenti e Istituti di Scienze Economiche (DISCE).

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