Macromodels and Walras' Law

Jose Encarnacion

No 199401, UP School of Economics Discussion Papers from University of the Philippines School of Economics

Abstract: Using a short-period macromodel with familiar components, this paper reformulates the aggregate demand (AD) function so that in conjunction with an aggregate supply (AS) function, one has an AS/AD framework with the following features: unlike the textbook treatment based on IS-LM where the I = S equilibrium condition is satisfied at every point of the AD curve, I = S only where AS = AD; involuntary unemployment is the typical case; and the money wage is not exogenously given. Walras' Law does not hold in the model. It may hold in other short-period models but only because of special assumptions about AD or AS.

Date: 1994-03
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Published as UPSE Discussion Paper No.1994-01, March 1994

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