IS-LM Graphical Model

The IS-LM Interactive Graphical Model

Learning Objectives

The IS-LM model depicts the causes and consequences of simultaneous equilibria within the product market and the money market. A graphical system visually demonstrates how an equilibrium level of income established in the product market interacts with the equilibrium rate of interest determined in the money market. Each market equilibrium and disequilibrium adjustments may be analysed using a four-quadrant diagram to ascertain the effects of fiscal and monetary policy instruments.

Be sure to click on the hypertext for narrative about the specifications and subsidiary issues

Get a graphical depiction of the simulation results for an IS-LM econometric model (with hypothetical parameters). The goods market (IS) and the money market (LM) are solved using a system of simultaneous equations with a very simple structural specification and the set of parameters selected in the menu. Graphs of the four quadrant diagrams for the IS or LM systems may be viewed or the resulting IS-LM equilibrium (upper right hand-quadrant of both systems) may be inspected.

The equilibrium established in the product market or, money market, is depicted using the four quadrant diagrams. Each equilibrium condition may be subjected to scrutiny using either the four quadrant IS or LM systems or, the super-equilibrium of both markets may be viewed using the upper right-hand quadrants of both systems. This super-equilibrium shows how both market equilibria will converge to a single equilibrium rate of interest and equilibrium level of income.A single interest rate abstracts from the term rate structure where, the long rate might best be used for the IS whilst, the short rate is attuned to the LM.


Goods Market
IS
Money Market
LM
System
IS-LM
Government
Spending (B$):
Velocity
of Money:
Please Press

to see graph
Tax Rate:
Money Supply
(B$):
...Select or change these parameters.
Select a scenario to reflect fiscal policy (a change in government spending and the tax rate) and, monetary policy (velocity and the change in the money supply). Choose the graph to view (IS, LM or IS-LM) using the round buttons and, be sure to click on the rectangular button to see results. The orginal scenario (default values) and the new scenario with the fiscal and monetary policies selected will appear in the graphical model.


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