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A Life-Cycle Model with Individual Volatility Dynamics

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  • Marios Karabarbounis

Abstract

This article solves a heterogeneous-agents, life-cycle model with idiosyncratic, time-varying volatility. Volatility is modeled based on an ARCH specification. I compare the life-cycle behavior of savings and consumption in a model with idiosyncratic volatility versus typical models with constant income risk. Idiosyncratic volatility generates a larger incentive to save precautionarily and, as a result, a lower consumption inequality.

Suggested Citation

  • Marios Karabarbounis, 2020. "A Life-Cycle Model with Individual Volatility Dynamics," Economic Quarterly, Federal Reserve Bank of Richmond, vol. 4, pages 159-171.
    • Handle: RePEc:fip:fedreq:92734
    DOI: 10.21144/eq1060402
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    References listed on IDEAS

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    1. Yongsung Chang & Jay Hong & Marios Karabarbounis & Yicheng Wang & Tao Zhang, 2022. "Income Volatility and Portfolio Choices," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 44, pages 65-90, April.
    2. Fatih Guvenen, 2009. "An Empirical Investigation of Labor Income Processes," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 12(1), pages 58-79, January.
    3. Jonathan Heathcote & Kjetil Storesletten & Giovanni L. Violante, 2017. "Optimal Tax Progressivity: An Analytical Framework," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 132(4), pages 1693-1754.
    4. Yongsung Chang & Jay Hong & Marios Karabarbounis & Yicheng Wang & Tao Zhang, 2022. "Income Volatility and Portfolio Choices," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 44, pages 65-90, April.
    5. Fatih Guvenen, 2007. "Learning Your Earning: Are Labor Income Shocks Really Very Persistent?," American Economic Review, American Economic Association, vol. 97(3), pages 687-712, June.
    6. Jonathan Heathcote & Kjetil Storesletten & Giovanni L. Violante, 2014. "Consumption and Labor Supply with Partial Insurance: An Analytical Framework," American Economic Review, American Economic Association, vol. 104(7), pages 2075-2126, July.
    7. Fatih Guvenen & Anthony A. Smith, 2014. "Inferring Labor Income Risk and Partial Insurance From Economic Choices," Econometrica, Econometric Society, vol. 82, pages 2085-2129, November.
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    Keywords

    Volatility; Economics;

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