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Consumption Externalities and Equilibrium Dynamics with Heterogenous Agents

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  • Kazuo Mino

    (Kyoto University)

  • Yasuhiro Nakamoto

    (Kyusyu Sangyo University)

Abstract

This paper explores the effect of consumption externalities on equilibrium dynamics of a standard neoclassical growth model in which there are two types of agents. To emphasize the presence of heterogenous agents, we distinguish intergroup consumption externalities from intragroup consumption externalities. We show that if there are intragroup consumption externalities alone, then the steady state equilibrium satisfies saddle-point stability and the equilibrium path of the economy is uniquely determined. In contrast, even if the intragroup consumption externalities do not exist, the intergroup external effects of consumption may yield either unstability or local indeterminacy of the steady-state equilibrium. In addition to analytical considerations, we show the relationship between the stability and the consumption externalities in numerical examples.

Suggested Citation

  • Kazuo Mino & Yasuhiro Nakamoto, 2011. "Consumption Externalities and Equilibrium Dynamics with Heterogenous Agents," KIER Working Papers 792, Kyoto University, Institute of Economic Research.
    • Handle: RePEc:kyo:wpaper:792
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    Cited by:

    1. Kazuo Mino & Yasuhiro Nakamoto, 2009. "Consumption Externalities and Wealth Distribution in a Neoclassical Growth Model," KIER Working Papers 683, Kyoto University, Institute of Economic Research.
    2. Borissov, Kirill, 2016. "The Rich And The Poor In A Simple Model Of Growth And Distribution," Macroeconomic Dynamics, Cambridge University Press, vol. 20(7), pages 1934-1952, October.
    3. Kazuo Mino, 2017. "Sunspot-Driven Business Cycles: An Overview," KIER Working Papers 973, Kyoto University, Institute of Economic Research.
    4. Riham Barbar & Mohanad Ismael, 2020. "Dynamic effects of consumption externalities," Decisions in Economics and Finance, Springer;Associazione per la Matematica, vol. 43(2), pages 725-750, December.
    5. Kazuo MIno & Yasuhiro Nakamoto, 2014. "Conformism and Wealth Distribution," KIER Working Papers 901, Kyoto University, Institute of Economic Research.
    6. Borissov, Kirill, 2016. "The Rich And The Poor In A Simple Model Of Growth And Distribution," Macroeconomic Dynamics, Cambridge University Press, vol. 20(7), pages 1934-1952, October.
    7. Fujisaki, Seiya, 2016. "Macroeconomic Effect of Consumption Tax on ”Dynamic” and ”Myopic” Agents," MPRA Paper 73500, University Library of Munich, Germany.

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    More about this item

    Keywords

    consumption externalities; heterogeneous agents; progressive taxation; equilibrium determinacy;
    All these keywords.

    JEL classification:

    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • O42 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - Monetary Growth Models

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