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Do You Save More or Less in Response to Bad News? A New Identification of the Elasticity of Intertemporal Substitution

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  • Schmidt, Lawrence
  • Toda, Alexis Akira

Abstract

We define the elasticity of intertemporal substitution (EIS) for general recursive preferences and identify a sharp comparative static from a general dynamic portfolio choice problem. In the homothetic case, if the EIS is smaller (larger) than 1, an investor will increase (decrease) current consumption in response to bad news about the future. Examples of bad news include if (i) she becomes more risk averse, (ii) investment opportunities shrink, (iii) investment returns become riskier, or (iv) she becomes more uncertain about the distribution of returns. Bad news effectively raises the price of future continuation utility, which produces the same qualitative changes in savings rates as lowering the interest rate.

Suggested Citation

  • Schmidt, Lawrence & Toda, Alexis Akira, 2015. "Do You Save More or Less in Response to Bad News? A New Identification of the Elasticity of Intertemporal Substitution," MPRA Paper 78983, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:78983
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    References listed on IDEAS

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    Cited by:

    1. Phelan, Gregory & Toda, Alexis Akira, 2019. "Securitized markets, international capital flows, and global welfare," Journal of Financial Economics, Elsevier, vol. 131(3), pages 571-592.

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    More about this item

    Keywords

    elasticity of intertemporal substitution; optimal portfolio problem; recursive preference;
    All these keywords.

    JEL classification:

    • D91 - Microeconomics - - Micro-Based Behavioral Economics - - - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making
    • E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions

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