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Finance in a Classical and Harrodian Cyclical Growth Model

  • Jamee K. Moudud

    (The Jerome Levy Economics Institute)

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    This paper is an extension of an earlier working paper ("Finance and the Macroeconomic Process in a Classical Growth and Cycles Model," Levy Institute Working Paper No. 253). The basic structure of the model remains unchanged in that it is based on a social accounting matrix (SAM) with endogenous money. Investment in circulating capital adds to output and investment in fixed capital adds to potential output. Driving the model's fast adjustment process, which describes the disequilibrium adjustment between aggregate demand and supply, is the dual disequilibria relationship in which the excess of monetary injections over desired money holdings fuels spending in the markets for goods and services. This excess also spills over into the bond market and lowers the interest rate. The model's slow adjustment process entails adjustments in fixed investment so that actual and normal (desired) capacity utilization fluctuate around each other. Over the long run investment is internally financed and regulated by the rate of profit. The current paper has three innovations. First, inventory investment is treated explicitly. Second, the SAM itself has been split into a current and capital account, thereby making it easier to derive the balance sheet counterpart of the flow matrix. Third, the paper discusses the stability properties of the 4 x 4 nonlinear differential equation system that describes the fast adjustment process. The key to stability is the negative feedback effect of business debt on investment. In the 4 x 4 case, a necessary condition for stability is that the reaction coefficient h2 on the debt term in the circulating investment equation be positive; a necessary and sufficient condition is that h2 ³h2* where h2* is some critical value. In crossing this critical value, the system undergoes a Hopf bifurcation. Finally, if the model is reduced to a 3 x 3 system by considering a budget deficit that is wholly bond financed, then necessary and sufficient conditions for stability can be derived using the "modified" Routh-Hurwitz conditions. These stability conditions, in this case, imply that h2 > 0.

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    File URL: http://econwpa.repec.org/eps/mac/papers/0004/0004036.pdf
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    Paper provided by EconWPA in its series Macroeconomics with number 0004036.

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    Length: 54 pages
    Date of creation: 12 Oct 2000
    Date of revision:
    Handle: RePEc:wpa:wuwpma:0004036
    Note: Type of Document - Adobe Acrobat PDF; prepared on IBM PC; to print on PostScript; pages: 54; figures: included
    Contact details of provider: Web page: http://econwpa.repec.org

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    1. Willem H. Buiter & James Tobin, 1978. "Fiscal and Monetary Policies, Capital Formation, and Economic Activity," Cowles Foundation Discussion Papers 512, Cowles Foundation for Research in Economics, Yale University.
    2. Wynne Godley, 1996. "Money, Finance and National Income Determination: An Integrated Approach," Economics Working Paper Archive wp_167, Levy Economics Institute.
    3. L. R. Wray, 1990. "Money and Credit in Capitalist Economies," Books, Edward Elgar, number 474, March.
    4. Anwar Shaikh, 1989. "A Dynamic Approach to the Theory of Effective Demand," Economics Working Paper Archive wp_19, Levy Economics Institute.
    5. Stephen Rousseas, 1985. "A Markup Theory of Bank Loan Rates," Journal of Post Keynesian Economics, M.E. Sharpe, Inc., vol. 8(1), pages 135-144, October.
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