ECON 001 Lecture Notes - Lecture 23: Keynesian Cross, Procyclical And Countercyclical, Parsec

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12 Jun 2018
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Chapter 32 Keynesian Econ
I. Keynesian Model
A. Key Facts About Economic Functions
1. Economic Fluctuations are Unpredictable
Recessions- two consecutive quarters of negative economic growth
Occur periodically but are not regular
Severity of recessions can vary
2. Macroeconomic Variables Fluctuate Together
Most macroeconomic variables move in the same direction as Real GDP (Y).
Variables are pro-cyclical. If Y increases I and C increase as well
Variables will fluctuate more than other variables
3. Unemployment and Real GDP move in opposite directions
Variables that move in opposite directions are counter-cyclical.
B. Keynesian Cross Graph
Let demand for goods and services equal planned expenditure (E). E = C + I + G +
NX
Let supply of goods and services equal actual production (Y). Y = supply of goods and
services
In equilibrium, supply = planned expenditure
Y = E
Y = C + I + G + NX
Q: Why must Y= C + I G + NX
Suppose Y > C + I + G + NX
Actual supply is greater than demand
Inventories will rise (I increases), signal to firms to cut back production (Y decreases)
Suppose Y < C + I + + NX
Actual supply is less than demand
Inventories will fall, signal for firms to increase production
Continue until y = C + I + G NX
C. (Keynesian Cross Diagram) ( see binder)
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Document Summary

Chapter 32 keynesian econ: macroeconomic variables fluctuate together, keynesian model, key facts about economic functions, economic fluctuations are unpredictable. Recessions- two consecutive quarters of negative economic growth. Most macroeconomic variables move in the same direction as real gdp (y). Variables will fluctuate more than other variables. Variables that move in opposite directions are counter-cyclical: unemployment and real gdp move in opposite directions, keynesian cross graph. If y increases i and c increase as well. Let demand for goods and services equal planned expenditure (e). E = c + i + g + Let supply of goods and services equal actual production (y). Inventories will rise (i increases), signal to firms to cut back production (y decreases) Q: why must y= c + i g + nx. Suppose y > c + i + g + nx. Suppose y < c + i + + nx. Inventories will fall, signal for firms to increase production.

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