Being Keynesian in the Short Term and Classical in the Long Term: The Traverse to Classical Long‐Term Equilibrium

Abstract

We analyse the relationship between the Keynesian (post‐Keynesian, Kaleckian) and classical perspectives, emphasizing the distinction between two time frames, short term and long term. A model is presented in which the traverse to a long‐term classical equilibrium, with prices of production, is obtained as a sequence of short‐term Keynesian equilibria (in which outputs are adjusted to demands). In the short term, prices and capital stocks are constant; they are only adjusted in the long term. Prices respond to disequilibria concerning capacity utilization rates. Investment is subject to a financing constraint, in which the provision of loans by the banking system is involved. Loans are modified in response to inflation (monetary policy).