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TRANSCRIPT
AD-ASFiscal Policy
Analyzing the National Economy
Why model the economy?
To understand causes of business cycles and possible
resolutions or fixes.
On one graph put inflation, unemployment, GDP, and
economic growth
Aggregate DemandNegative Slope: As Price Level goes up:Real Balance Effect Feel PoorerInterest Rate Effect Need to borrow more consumption borrowing, i rates, Investment borrowingOpen Economy Effect Go to exports
Aggregate DemandShifters:Consumers: Expectations Income
Taxes or TransfersWages or Wealth
Businesses Investment
Interest RatesTaxes
Government SpendingNet Exports International Income/Expectations Tariffs Dollar strength
Aggregate SupplyPositive Slope: As Price Level goes up
Profit Illusion As prices go up, wages and input costs stay fixed.
Inventory Effect If below full capacity can sell from inventory with no cost pressures
Aggregate SupplyShifters:
Change in input prices
wages, oil, etc.TechnologyRegulationsChange in input quality
Together:
Unemployment will increase as Y decreases andUnemployment will decrease as Y increases.
AD ShockInventories increaseUnemployment increases
Prices fallWages fall
People feel richer buy moreBack to equilibrium ….or not.
Aggregate Supply DebateKeynsians ClassicalNever at full
employment even in good times
Prices and wages sticky
Adjustment will not happen
Always at full employment
Prices and wages slippery
Adjustment will happen
Another look at the differences
Demand Shift with Keynsian-Sticky Wages -Sticky Prices-Slow recovery-Stuck below Y*
Demand shifts with Classical-Wages and Prices Adjust
-Restoring the economy back to full output
Aggregate Supply DebateKeynsians ClassicalNever at full
employment even in good times
Prices and wages sticky
Need to push AD right with government
Always at full employment
Prices and wages slippery
Need to stay out of way and wait for wages/prices to fall
Compromise AS Curve
PracticeAggregate Demand Aggregate SupplyConsumer Income
or expectationsInvestment income
or expectationsGovernment
SpendingChange in exports
or imports
Costs of ProductionTechnology or
weatherGovernment Policy
Inflation Causes
Demand Pull Inflation Cost Push Inflation
Full Employment Long Run AS
Below Y* recessionary gap Above Y* inflationary gapPL down, Y down, Unemp up PL up, Y up, Unemp down
Y*
LRAS
LRAS relates to PPF
Growth
Increases LRAS and PPF
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
1. The personal income tax rate goes up by a significant amount
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
2. The stock market falls to record low levels following remarks by the Fed Chairman that “it is all just irrational exuberance”
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
3. A new computer program reads your mind and automatically prepares word documents dramatically increasing productivity.
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
4. Nationwide the minimum wage goes to $20 with retirement contributions.
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
5. The European union dissolves. The ensuing uncertainty throws the entire continent into a recession.
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
6. A La Nina weather system causes massive droughts through out the US severely reducing crop production, livestock health and even the snow pack for ski resorts.
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
7. Congress passes tax cuts for firms that expand jobs by 10%.
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
8. With increased pressure to fight crime, states significantly tighten their sentencing laws and increase their prison budgets.
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
9. A major earthquake and tsunami in China disrupts supply chains across the world.
Practice1.AD or AS
2.Shift Right or Left
3.Find new equilibrium
4.Outcomes:-Price Level?-Output?-Unemployment?
10. Following the building of a wall Canada and Mexico leave NATO and form their own trading bloc excluding the US.
Effects on AD of DeflationIf consumers expect prices to keep falling,
they may hold off on purchases today.
Value of debt rises, causing C & I confidence to fall
Cost of borrowing increases, as paying back $ that are worth more than those borrowed.
If input costs are locked up, profits fall
Costs of Recessionary GapUnemployment, Loss Production, Loss tax
revenue
Long-term:Loss of relevant skills for job seekers – Permanently unemployedBusiness failuresDecreased investmentLost government programs, higher deficits
Shifts LRAS to the left
Phillips CurveLimitations
Worker expectations
Only true for AD shifts, not supply shocks