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Real-Financial Interaction: A Reconsideration of the Blanchard Model with a State-of-Market Dependent Reaction Coefficient

In: Economic Complexity

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  • PETER FLASCHEL
  • WILLI SEMMLER

Abstract

We reformulate and extend the Blanchard model of output dynamics, the stock market and interest rates that studies Keynesian IS-LM analysis from the perspective of a richer array of short-term bonds. Thus investment demand now depends on Tobin's average q in the place of the real rate of interest and as a result share price dynamics feed back into the real sector, thereby creating the link for the real-financial interaction studied by Blanchard. We reconsider the results achieved by Blanchard without use of logarithms and other simplifications in the expression for the substitutability and imperfect forecasts of capital gains in the place of Blanchard's limit case of perfect substitutes and myopic perfect foresight. Our more general framework, and in particular the assumption of a state-of-the market dependent speed of reaction to expected asset return differentials, allows us to develop a mode of dynamic analysis that provides an alternative to the conventional jump variable technique of the perfect limit cases. We show how as a consequence the stock market dynamics can display periods of bull and bear markets having both activated and tranquil phases that give rise to a variety of adjustment patterns.
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  • Peter Flaschel & Willi Semmler, 2004. "Real-Financial Interaction: A Reconsideration of the Blanchard Model with a State-of-Market Dependent Reaction Coefficient," International Symposia in Economic Theory and Econometrics, in: Economic Complexity, pages 31-65, Emerald Group Publishing Limited.
    • Handle: RePEc:eme:isetez:s1571-0386(2004)0000014005
    DOI: 10.1108/S1571-0386(2004)0000014005
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    1. Sargent, Thomas J & Wallace, Neil, 1973. "The Stability of Models of Money and Growth with Perfect Foresight," Econometrica, Econometric Society, vol. 41(6), pages 1043-1048, November.
    2. William A. Brock & Cars H. Hommes, 1997. "A Rational Route to Randomness," Econometrica, Econometric Society, vol. 65(5), pages 1059-1096, September.
    3. Chiarella Carl & Semmler Willi & Mittnik Stefan & Zhu Peiyuan, 2002. "Stock Market, Interest Rate and Output: A Model and Estimation for US Time Series Data," Studies in Nonlinear Dynamics & Econometrics, De Gruyter, vol. 6(1), pages 1-39, April.
    4. Chiarella, Carl, 1986. "Perfect foresight models and the dynamic instability problem from a higher viewpoint," Economic Modelling, Elsevier, vol. 3(4), pages 283-292, October.
    5. Buiter, Willem H, 1984. "Saddlepoint Problems in Continuous Time Rational Expectations Models: A General Method and Some Macroeconomic Examples," Econometrica, Econometric Society, vol. 52(3), pages 665-680, May.
    6. Olivier Jean Blanchard & Stanley Fischer, 1989. "Lectures on Macroeconomics," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262022834, December.
    7. Carl Chiarella & Peter Flaschel & Willi Semmler, 2003. "Real-Financial Interaction: Implications of Budget Equations and Capital Accumulation," Working Paper Series 127, Finance Discipline Group, UTS Business School, University of Technology, Sydney.
    8. Chiarella,Carl & Flaschel,Peter, 2011. "The Dynamics of Keynesian Monetary Growth," Cambridge Books, Cambridge University Press, number 9780521180184.
    9. Blanchard, Olivier J, 1981. "Output, the Stock Market, and Interest Rates," American Economic Review, American Economic Association, vol. 71(1), pages 132-143, March.
    10. William A. Brock & Cars H. Hommes, 2001. "A Rational Route to Randomness," Chapters, in: W. D. Dechert (ed.), Growth Theory, Nonlinear Dynamics and Economic Modelling, chapter 16, pages 402-438, Edward Elgar Publishing.
    11. Chiarella, Carl, 1990. "Excessive exchange rate variability : A possible explanation using nonlinear economic dynamics," European Journal of Political Economy, Elsevier, vol. 6(3), pages 315-352, December.
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    Cited by:

    1. Carl Chiarella & Peter Flaschel & Reiner Franke & Willi Semmler, 2002. "Stability Analysis of a High-Dimensional Macrodynamic Model of Real-Financial Interaction: A Cascade of Matrices Approach," Working Paper Series 123, Finance Discipline Group, UTS Business School, University of Technology, Sydney.
    2. Chiarella Carl & Semmler Willi & Mittnik Stefan & Zhu Peiyuan, 2002. "Stock Market, Interest Rate and Output: A Model and Estimation for US Time Series Data," Studies in Nonlinear Dynamics & Econometrics, De Gruyter, vol. 6(1), pages 1-39, April.
    3. Carl Chiarella & Peter Flaschel & Reiner Franke & Willi Semmler, 2001. "Real-Financial Interaction: Integrating Supply Side Wage-Price Dynamics and the Stock Market," Working Paper Series 112, Finance Discipline Group, UTS Business School, University of Technology, Sydney.
    4. F. Cavalli & A. Naimzada & N. Pecora, 2022. "A stylized macro-model with interacting real, monetary and stock markets," Journal of Economic Interaction and Coordination, Springer;Society for Economic Science with Heterogeneous Interacting Agents, vol. 17(1), pages 225-257, January.
    5. Willi Semmler, 2011. "Asset Prices, Booms and Recessions," Springer Books, Springer, number 978-3-642-20680-1, December.
    6. Carl Chiarella & Peter Flaschel & Reiner Franke & Willi Semmler, 2003. "Output and the Term Structure of Interest Rates: Ways Out of th Jump-Variable Conundrum," Working Paper Series 125, Finance Discipline Group, UTS Business School, University of Technology, Sydney.
    7. Carl Chiarella & Peter Flaschel & Willi Semmler, 2003. "Real-Financial Interaction: Implications of Budget Equations and Capital Accumulation," Working Paper Series 127, Finance Discipline Group, UTS Business School, University of Technology, Sydney.

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    JEL classification:

    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian; Modern Monetary Theory

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