DSGE vs. FMD; Sbordone, Tambalotti, Rao, and Walsh

DSGE is – to many economists – the standard model and method of macroeconomic analysis.  See our treatment of the textbooks’ IS-LM, AD-AS models and the Phillips Curve correlation.

The acronym stands for Dynamic (in Newtonian mechanics an external force causes a change to constant velocity, i.e. an acceleration, which may be negative or positive), Stochastic (random, not according to system, probabilistic, unexplained) General (pertaining to the entire economic process), Equilibrium (essentially Walrasian static equilibrium).

Leon Walras developed the conception of the markets as exchange equilibria. Concentrate all markets into a single hall. Place entrepreneurs behind a central counter.  Let all agents of supply offer their services, and the same individuals, as purchasers, state their demands.  Then the function of the entrepreneur is to find the equilibrium between these demands and potential supply. … The conception is exact, but it is not complete.  It follows from the idea of exchange, but it does not take into account the phases of the productive rhythms. … [CWL 21, 51-52] (Continue reading)

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