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A Note on Keynesian Models Used in Standard Textbooks

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  • Franz Seitz

    (Weiden Business School, Technical University of Appied Sciences Amberg-Weiden, Hetzenrichter Weg 15, D-92637 Weiden, Germany)

  • Joerg Flemmig

    (Department of Economics, Anhalt University of Applied Sciences, Strenzfelder Allee 28, D-06406 Bernburg, Germany)

Abstract

This article shows that there is a methodological problem in the traditional IS-LM model. If production cannot be sufficiently adjusted downwards, there is no uniform interest rate that simultaneously clears the money and goods markets. An extension of the credit market in the tradition of the loanable funds theory resolves this contradiction and yields a coherent mechanism for crisis dynamics and policy transmission. In this expanded model, the interest rate is determined by the credit market whereby the total supply of credit results from household savings and the credit supply of banks and the demand for credit is due to investment demand and the demand for liquidity. This methodological approach facilitates the explanation of crisis dynamics, as involuntary inventory investment generates liquidity problems and disequilibria in the goods market lead to imbalances in the financial markets.

Suggested Citation

  • Franz Seitz & Joerg Flemmig, 2025. "A Note on Keynesian Models Used in Standard Textbooks," Economies, MDPI, vol. 13(10), pages 1-13, September.
    • Handle: RePEc:gam:jecomi:v:13:y:2025:i:10:p:279-:d:1757748
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