European Business Schools Librarian's Group

Department of Economics Working Papers,
Vienna University of Economics and Business, Department of Economics

No 69: Walras' Law and the IS-LM Model. A Tale of Progress and Regress.

Hansjoerg Klausinger ()
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Hansjoerg Klausinger: Department of Economics, Vienna University of Economics & B.A.

Abstract: This paper deals with the integration of Walras' law into Keynesian macroeconomics and the attempts at a consistent specification of period models (beginning- vs. end-of-period-equilibrium). Three examples are examined where neglect of a consistent specification led to erroneous results: (1) the identication of the IS-condition with equilibrium of the "flow market" for bonds, (2) superficial treatments of the liquidity trap, and (3) the assumptions on the stochastic structure of monetary and real shocks in determining the optimal monetary instrument.

Keywords: Walras' Law; IS-LM-model; beginning-of-period-equilibrium; end-of-period-equilibrium; liquidity trap; optimal monetary instrument

JEL-codes: B22; E52 May 2000

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