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¿Se pueden aplicar las ideas Keynesianas al largo plazo? Unas reflexiones teóricas y un modelo ilustrativo

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  • Marco Missaglia

Abstract

El modelo que se construye en este artículo quiere mostrar que la más importante idea Keynesiana, el principio de la demanda efectiva, no se aplica solamente a un corto plazo en el que unos precios son fijos o rígidos. También se aplica a un largo plazo en el que los precios son perfectamente flexibles y vacían el mercado, las firmas maximizan sus ganancias y la distribución funcional del ingreso depende de las productividades marginales. También se muestra que la naturaleza Keynesiana de un modelo no depende de sus resultados – en unos casos bajar los salarios es una buena idea y en otros no lo es; en unos casos la paradoja del ahorro vale en el largo plazo y en otros no vale – sino del hecho de incorporar (o no incorporar) la noción de demanda autónoma. Para terminar, se le da un sustento a la idea de que la forma en la que se trata el asunto de los salarios monetarios (y su flexibilidad) en la Teoría General no se puede aplicar al mundo “financiarizado” en el que estamos. ****** This paper presents a model intended to show that the most important Keynesian idea, the principle of effective demand, cannot be only applied to short terms, in which some prices are fixed or sticky; but also to long terms where prices are perfectly flexible and empty the market, firms increase their profits, and where the functional income distribution depends on marginal productivities. Moreover, we will show that the Keynesian nature of a model does not depend on its results, in some cases lowering wages is a good policy and in others it is not. In some cases, the paradox of thrift stands out in the long run and in some others it does not; instead, this nature depends on incorporating (or not) the notion of autonomous demand. To conclude, we will support the idea stating that the way in which monetary wages (and flexibility) are addressed in the General Theory is not applicable to the financialized world, where we live.

Suggested Citation

  • Marco Missaglia, 2015. "¿Se pueden aplicar las ideas Keynesianas al largo plazo? Unas reflexiones teóricas y un modelo ilustrativo," Revista Panorama Económico 15323, Universidad de Cartagena.
  • Handle: RePEc:col:000407:015323
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    File URL: http://revistas.unicartagena.edu.co/index.php/panoramaeconomico/article/view/1380
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    Keywords

    Economía keynesiana; enseñanza de la economía; flexibilidad salarial; Keynesian economics; Teaching of Economics; Wage flexibility.;
    All these keywords.

    JEL classification:

    • A20 - General Economics and Teaching - - Economic Education and Teaching of Economics - - - General
    • B00 - Schools of Economic Thought and Methodology - - General - - - History of Economic Thought, Methodology, and Heterodox Approaches
    • B20 - Schools of Economic Thought and Methodology - - History of Economic Thought since 1925 - - - General
    • B30 - Schools of Economic Thought and Methodology - - History of Economic Thought: Individuals - - - General
    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian; Modern Monetary Theory

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