ECON 1P92 Lecture Notes - Lecture 11: Demand Shock, Aggregate Demand

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Any positive shock [increase in exports (x)] Any negative shock [fall in investment (i)] Decreases ad shifts the ad leftward: the drop in the price of oil. K x a measures size of horizontal shift of ad curve. Summary: price level changes, ae line shifts up or down (c changes [real balances effect] and nx change, movement up or down ad curve. Price level rises : ae shifts down (c and nx fall, move left and up ad curve, autonomous expenditure (i,g,x) changes, ae line shifts up or down, ad curve shifts right or left. I increase : ae shifts up, ad shifts right. More is demanded at the same price level. Relates price level to quantity of output. Cost per unit of output (unit costs) rise as output increase. Firms produce more output only if prices increase. Output increases without causing large increases in unit cost.

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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

Here is the question and the answers. But I need an explanation of WHY the answer is what it is. Any answers that don't answer why for each one will only get 1 star.

What effects would each of the following have on aggregate demand or aggregate supply? In each case use a diagram to show the expected effects on the equilibrium price level and level of real output. Assume that all other things remain constant.

a. A widespread fear of depression on the part of consumers.

b. A $2 increase in the excise tax on a pack of cigarettes.

c. A reduction in interest rates at each price level.

d. A major increase in Federal spending for health care.

e. The expectation of rapid inflation.

f. The complete disintegration of OPEC, causing oil prices to fall by one-half.

g. A 10 percent reduction in personal income tax rates.

h. A sizable increase in labor productivity (with no change in nominal wages).

i. A 12 percent increase in nominal wages (with no change in productivity).

j. Depreciation in the international value of the dollar.

ANSWERS

(a) AD curve left, output down and price level down (assuming no ratchet effect).

(b) AS curve left, output down and price level up.

(d) AD curve right, output and price level up (any real improvements in health care resulting from the spending would eventually increase productivity and shift AS right).

(e) AD curve right, output and price level up.

(f) AS curve right, output up and price level down.

(g) AD curve right, output and price level up.

(h) AS curve right, output up and price level down.

(i) AS curve left, output down and price level up.

(j) AD curve right (increased net exports); AS curve left (higher input prices)

sangriawildebeest451

In the AD-AS model, stagflation does not persist, because the working of the self-correcting mechanism of the economy _____ the level of output and _____ the price level until the economy eventually returns to a long-run equilibrium state, where actual output _____ potential output.

	decreases; decreases; falls short of
	increases; decreases; equals
	decreases; increases; exceeds
	decreases; increases; equals
	increases; decreases; exceeds

The LRAS curve is drawn as a vertical line at potential output (Y*) to indicate that

	Y* is independent of the price level and that actual output Y > Y* in the long run
	Y* equals actual output (Y) in the long run
	Y* is independent of the price level and that actual output Y = Y* in the long run
	Y* is independent of the price level
	Y* is independent of the price level and that actual output Y < Y* in the long run

Stagflation arises in the context of the AD-AS model when some external factor causes

	the LRAS curve to shift to the right
	the AD curve to shift leftwards
	the SRAS curve to shift downwards
	the SRAS curve to shift upwards
	the AD curve to shift rightwards

If the SRAS curve is positively sloped, then a decrease in the demand for Canadian-made goods in Europe will lead to _____ in the price level, in the short run.

	either an increase or a decrease
	no change
	an increase
	a decrease
	an initial increase, and then a decrease

Which of the following will shift the aggregate demand curve to the right?

	Consumers become pessimistic about the future
	A new technology is developed that will increase profits
	Income taxes are raised
	Foreign economies fall into recession, reducing their demand for domestic exports
	The government reduces purchases to balance the budget

Suppose a stock market crash decreases the stock of household wealth and therefore causes autonomous consumption to fall. Which of the following is the likely result?

	A leftward shift the AD curve
	There will be no movement of the AD curve
	A movement down the AD curve
	A movement up the AD curve
	A rightward of the shift the AD curve

An economy is characterized by the AD equation P = 200 ? 0.02Y, SRAS equation P = 100 and LRAS equation Y* = 5000. In the absence of any change in policy or exogenous shocks, this economy will achieve a long-run price level of

	100
	110
	120
	90
	105

The AD-AS model depicts a self-correcting economy. This means that the price level in the model adjusts automatically in response to a(n) _____ gap, so as to eliminate the _____ gap in the long run, without requiring any help from government policies.

	recessionary; recessionary
	recessionary; expansionary
	expansionary; expansionary
	output; output
	expansionary; recessionary

The aggregate demand curve shows

	the amount of planned aggregate expenditure (and output) at the current price level
	the amount of planned aggregate expenditure (and output) at an average price level
	the amount of planned aggregate expenditure (and output) at a constant price level
	the amount of planned aggregate expenditure (and output) at various price levels
	the amount of planned aggregate expenditure (and output) at last year's price level

Consider an economy initially at long-run equilibrium with output (Y) equal to potential output (Y*). If the SRAS is positively sloped, then a shift to the right of the AD curve will lead to _____ in the price level, in the short run. In the long run, the SRAS curve will shift to the _____ and the equilibrium will be at __________.

	an increase; left; Y = Y*
	a decrease; right; Y > Y*
	an increase; right; Y = Y*
	a decrease; left; Y > Y*
	no change; left; Y = Y*

ECON 1P92 Lecture Notes - Lecture 11: Demand Shock, Aggregate Demand

ECON 1P92 Full Course Notes

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