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EC140 Lecture Notes - Lecture 5: Diminishing Returns, Aggregate Demand, Aggregate Supply

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cyanfish941
4 Apr 2016
School
WLU
Department
Economics
Course
EC140
Professor
Ken Jackson

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EC140 Full Course Notes
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Document Summary

Chapter 23 part 1 output and prices in the short run. The money people hold can buy fewer goods. People are efecively poorer consumpion falls. There is a downward sloping aggregate demand (ad) curve: Ad curve shows level of real gdp for each price level where desired ae. If ae shits up, ad increases and the ad curve shits right. As ae shits up, real gdp increases. As curve shows amount irms wish to produce and sell at each price level. Assumpions: constant tech and constant input prices. Producion constraints oten minor when output is low. Companies move to costlier methods to increase output. Slope of the as curve is increasing. Tech improves as as curve shits right/down. Deterioraion in tech when as curve shits let/up. If input prices fall, as curve shits right/down. If input prices rise, as curve shits let/up. Combinaion of price level and real gdp where demand equals supply.

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Related Questions

10,A change in the price level​ ________ the AE curve and​ ________ the AD curve.
A.
​shifts; shifts
B.
has no effect​ on; results in a movement along
C.
results in a movement​ along; results in a movement along
D.
results in a movement​ along; shifts
E.
​shifts; results in a movement along

17,When the price level​ falls, the aggregate planned expenditure curve shifts​ ________, equilibrium expenditure​ ________ and there is a movement​ ________ along the aggregate demand curve.
A.
​upward; increases; upward
B.
​downward; decreases; downward
C.
​upward; decreases; downward
D.
​upward; increases; downward
E.
​downward; increases; upward

21,Which of the following increases the size of the expenditure​ multiplier?
A.
an increase in autonomous spending
B.
a decrease in the marginal propensity to consume
C.
a decrease in the marginal propensity to import
D.
an increase in the marginal income tax rate
E.
an increase in investment

23,If the quantity of real GDP demanded is greater than the quantity of real GDP​ supplied, then
A.
the price level falls and firms decrease production.
B.
aggregate demand changes to restore equilibrium.
C.
the economy must be producing at potential GDP.
D.
the price level falls to restore the macroeconomic equilibrium
E.
the price level rises and firms increase production.


24, ________ can trigger an expansion.
A.
Equality between aggregate expenditure and real GDP
B.
A decrease in induced expenditure
C.
A downward shift of the AE line
D.
An increase in autonomous expenditure
E.
A decrease in autonomous expenditure


A. A decrease in aggregate supply can result in:

  1. a recession
  2. cost-push inflation
  3. demand-pull inflation
  4. unemployment 

B. In the short run (intermediate-range) of the aggregate supply curve, higher aggregate demand will increase

  1. the price level but reduce real GDP.
  2. real GDP without raising the price level
  3. the price level without affecting real GDP
  4. both the price level and real GDP

C. Which of the following helps explain why real GDP is inversely related to the price level within the framework of the AD-AS model?

  1. As prices fall, domestic consumers have an incentive to buy more of the cheaper goods and services
  2. As prices fall, the wealth of people holding the fixed quantity of money increases, causing them to expand their purchases of goods and services
  3. As prices fall, the government will have to reduce taxes, which will lead to an increase in the number of goods and services purchased
  4. As prices fall, the monetary authorities will have to increase the money supply, which will lead to an increase in the number of goods and services purchased

In the Keynesian model

aggregate demand determines real GDP per year.

the short-run aggregate supply curve determines real GDP.

unemployment cannot persist for long periods of time.

the aggregate demand curve determines the price level.

A terrible winter storm causes enormous problems in the

northeastern

part of the United States. This would cause

the short-run aggregate supply curve to shift to the left, but would have no effect on the long-run aggregate supply curve.

both the short-run and the long-run aggregate supply curves to shift to the left, but the long-run aggregate supply curve would shift more than the short-run curve.

the short-run aggregate supply curve to shift to the left, and the long-run aggregate supply curve would shift to the right.

both the short-run and the long-run aggregate supply curves to shift to the right in equal amounts.

Equilibrium real GDP rises after the dollar strengthened. From this we can conclude that

the increase in aggregate demand was greater than the decrease in aggregate supply.

the decrease in aggregate demand was more than the increase in aggregate supply.

the decrease in aggregate demand was less than the increase in aggregate supply.

the increase in aggregate demand was less than the decrease in aggregate supply.

Saving is

the difference between real GDP and disposable income while savings is the difference between disposable income and consumption spending.

the amount one does not consume in a given period of time while savings is the accumulation of past periods of saving.

the difference between disposable income and spending on goods and serviceswhile savings is the difference between real GDP and disposable income.

the accumulation of past periods of savings while savings is the amount of disposable income that is not consumed in a given period of time.

A permanent reduction in investment spending leads to

a proportional decrease in real GDP.

a more than proportional decrease in real GDP.

a more than proportional increase in real GDP.

a less than proportional decrease in real GDP.

An increase in net exports leads to an increase in real GDP. Further,

consumption spending increases while investment spending decreases.

consumption spending increases but saving does not change.

consumption spending and saving increase.

government spending decreases to offset the increase in net exports.

An increase in aggregate spending that is caused by a factor other than the price level will lead to the

aggregate demand curve shifting to the right.

aggregate supply curve shifting to the right.

aggregate supply curve shifting to the left.

aggregate demand curve shifting to the left.

The marginal propensity to consume is 0.9. The multiplier is

0.9.

1.11.

0.1.

10.

When the SRAS curve slopes upward, the actual affect of an increase in real autonomous spending on equilibrium real GDP is smaller than predicted by the multiplier because

real GDP increases.

the price level rises

the price level falls.

real GDP decreases.

Other things equal, the lower the total real value of final goods and services demanded in the economy the

more the production possibilities cure shifts to the left.

lower the price level.

higher the price level.

lower the level of endowments.

The long-run aggregate supply curve can be thought of as the

level of output for which real GDP equals nominal GDP.

level of output that the nation is currently producing.

level of real GDP associated with a constant price level.

full-employment level of real GDP.