ECON 1P92 Lecture Notes - Lecture 12: Aggregate Supply, Aggregate Demand, Demand Shock

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13 Apr 2016

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ECON 1P92 Full Course Notes

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When prices go up, can"t purchase as much, ae line declines. Ad curve shows level of real gdp where. Changes in p shown by movements along aggregate demand curve. **now dealing with all goods and services no subsitutes. Real wealth increases when price falls [ real balances ] Any posiive shock [ increase in exports (x) ] Any negaive shock [ fall in investment (i) ] Decreases ad shits the ad letward. K x change in a measures the size of horizontal shit of ad curve. Change of ad = k x change in a. Summary: price level changes, ae line shits up or down (c changes real balances efect . And nx change: move up or down ad curve e. g. price level rises, ae shits down. Autonomous expenditure (i, g, x) changes: ae line shits up or down, ad curve shits right or let e. g. i increases a. ) More is demanded at the same price level.

Related Questions

10,A change in the price levelâ ________ the AE curve andâ ________ the AD curve.

âshifts; shifts

has no effectâ on; results in a movement along

results in a movementâ along; results in a movement along

results in a movementâ along; shifts

âshifts; results in a movement along

17,When the price levelâ falls, the aggregate planned expenditure curve shiftsâ ________, equilibrium expenditureâ ________ and there is a movementâ ________ along the aggregate demand curve.

âupward; increases; upward

âdownward; decreases; downward

âupward; decreases; downward

âupward; increases; downward

âdownward; increases; upward

21,Which of the following increases the size of the expenditureâ multiplier?

an increase in autonomous spending

a decrease in the marginal propensity to consume

a decrease in the marginal propensity to import

an increase in the marginal income tax rate

an increase in investment

23,If the quantity of real GDP demanded is greater than the quantity of real GDPâ supplied, then

the price level falls and firms decrease production.

aggregate demand changes to restore equilibrium.

the economy must be producing at potential GDP.

the price level falls to restore the macroeconomic equilibrium

the price level rises and firms increase production.

24, ________ can trigger an expansion.

Equality between aggregate expenditure and real GDP

A decrease in induced expenditure

A downward shift of the AE line

An increase in autonomous expenditure

A decrease in autonomous expenditure

greyarmadillo136

1. In the long run, when prices are perfectly flexible:

a. aggregate supply is vertical and a market economy is self-correcting.

b. a market economy cannot self-correct.

c. government will be required to set prices to maintain equilibrium.

d. changes in aggregate demand cause equilibrium real GDP to change.

2. An increase in household wealth when the SRAS curve is upward sloping:

a. leads to an increase in the price level but has no impact on real GDP

b. has no impact on the price level but leads to an increase in real GDP

c. leads to an increase in both the price level and real GDP

d. has no impact on the price level or real GDP

3. In the long run, continued increases in aggregate demand not matched by similar increases in aggregate supply will cause:

a. an increase in the full-employment level of real GDP

b. a recessionary gap

c. a decrease in the price level

d. an increase in the price level

4. The vertical long-run aggregate supply curve implies that:

a. changes in aggregate demand will not affect the price level

b. the short-run aggregate supply curve is also vertical

c. natural or full-employment real GDP does not depend on the price level, in the long run

d. natural or full-employment real GDP is the same as the equilibrium real GDP in the short run

5. A rightward shift of the long-run aggregate supply curve illustrates:

a. economic growth

b. a recessionary gap

c. an inflationary gap

d. a decrease in natural real GDP

6. When the economy is in a recessionary gap

a. there is a surplus of labor

b. there is a shortage of labor

c. it is producing a real GDP level that is greater than natural real GDP

d. the unemployment rate is less than the natural unemployment rate

7. If the actual unemployment rate is less than the natural unemployment rate:

a. a recessionary gap exists and wages are likely to rise

b. an inflationary gap exists and wages are likely to rise

c. a recessionary gap exists and wages are likely to fall

d. an inflationary gap exists and wages are likely to fall

8. An economy in long-run equilibrium is producing:

a. a level of real GDP that is greater than its natural real GDP

b. where both the price level and real output are maximized

c. a level of real GDP equal to its natural real GDP

d. in the vertical range of aggregate demand.

crimsonreindeer720

MBA502, Economics for Business

Apply and Discover 7.2

You are responsible for economic policymaking in your country. Your desire is to eliminate inflation, keeping prices absolutely stable at P = 100, no matter what happens to output. Currently, the economy is in equilibrium at Q = 3200 (where Q = potential GDP) and P = 100. You can use monetary and fiscal policies to affect aggregate demand but you cannot affect aggregate supply in the short run. How would you respond to the following scenarios?

Explain and illustrate how each of these events would affect aggregate demand, aggregate supply, and prices, then explain how you would respond with economic policies.

1. A surprise increase in investment spending

In the short run, when investment spending increases, it results in an increase in Aggregate Demand (AD), which in turn pushes up both GPD and the price index.

To counterbalance this development, government might pursue contractionary fiscal policy by increasing taxes (to reduce consumption) or decreasing its own investment and spending so that the AD curve shifts back to its original position. Alternatively, the government can pursue contractionary monetary policy by reducing money supply and increasing interest rate to discourage economic activity.

2. Catastrophic floods that cause a sharp food price increase

In this case, sharp food shortages and consequent price increases cause a shock-type adjustment of the aggregate supply curve (it shift up and to the left). The result is a lower GDP and a higher price level.

The government cannot do anything to adjust AS in the short run. However, if the goal is to maintain the price level constant, the government can decide to do something to decrease the aggregate demand to force prices to come down, though it will be accompanies by another contraction in GDP and so it would not be a smart thing to do.

To cause AD to decrease, the government, similar to example above, can pursue fiscal policy (increase taxes, decrease spending) or monetary policy (reduce supply of money to the economy and thus increase interest rates).

3. A productivity decline that reduces potential output

In this case, AS shifts to the left, as was the case in example 2. As a result, price levels go up, as the same amount of money is chasing the reduced amount of goods and services, and GDP declines.

Government remedies here would be centered about causing AD to decrease through contractionary fiscal (higher taxes, lower spending) or monetary (reduce money supply and increase interest rates) policy. Again, this decision reduces inflation but at expense of GDP, as real output shrinks further.

4. A deep depression in East Asia that causes a sharp decrease in net exports to the United States

A decrease in exports of goods to from the United States to Asia will mean that the aggregate demand (which includes net exports

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ECON 1P92 Lecture Notes - Lecture 12: Aggregate Supply, Aggregate Demand, Demand Shock

ECON 1P92 Full Course Notes

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