ECON 3440 Lecture Notes - Lecture 11: Real Interest Rate, Autonomous Consumption, Aggregate Demand

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9 May 2016

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C = consumption expenditurei = planned investment spending. G = government purchasesnx = net exports (exports minus imports) The components of expenditure: consumption expenditure, planned investment spending (only difference between actual: unplanned investment, net exports, government purchases and taxes. Because consumption expenditure is negatively related to the real interest rate, r, the consumption function can be modified as: Recall: topic 4: as real interest rates fall, households and firms are more likely to make investments, and so the desired level of investment in the economy will rise. The government affects planned expenditure through: government purchases: assumed to be exogenous at g----, taxes: assumed to be exogenous at t---- Equilibrium in the economy occurs when the total quantity of output produced equals the total amount of planned expenditure: y =ype. The is curve shows the relationship between aggregate output and the real interest rate when the goods market is in equilibrium.

Related Questions

An economy with zero net exports is described below:

C	= 100 + 0.6 (Y 'T)
I ^p	= 70
G	= 120
NX	= 0
T	= 150
The multiplier in this economy is 2.5.

A. Find short-run equilibrium output.

Instruction: Enter your response as an integer value.

Short-run equilibrium output: .

B. Economic recovery abroad increases the demand for the country's exports; as a result, NX rises to 80.

Instruction: Enter your response as an integer value.

Short-run equilibrium output (Click to select)decreases/ increases to ________ .

C. Assume that foreign economies are slowing, reducing the demand for the country's exports so that NX = -80. (A negative value of net exports means that exports are less than imports.)

Instruction: Enter your response as an integer value.

Short-run equilibrium output (Click to select)increases/decreases to ___________ .

D. Which of the following best describes the tendency of recessions and expansions to spread across countries?

1. Lower planned aggregate spending in one nation will reduce the amount of goods it exports abroad, thereby lowering the value of imports for its trading partners, which will reduce its short-term equilibrium output as well.

2. Lower planned aggregate spending abroad means that fewer goods will be exported from a specific nation, leaving more goods available for domestic consumption (C) in that nation, which will increase its short-term equilibrium output.

3. Lower planned aggregate spending abroad will reduce the amount of investment that flows into domestic industries from other countries, thereby reducing domestic short-term equilibrium output.

4. Lower planned aggregate spending in a nation means fewer imports of foreign goods, thereby reducing the short-term equilibrium output of its trading partners through lower net export (NX) values in those nations.

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5. Saving and net flows of capital and goods In a closed economy, saving and investment must be equal, but this is not the case in an open economy. In the following problem, you will explore how saving and investment are connected to the international flow of capital and goods in an economy. Before delving into the relationship between these various components of an economy, you will be asked to recall some relationships between aggregate variables that will be useful in your analysis. Recall the components that make up GDP. National income (Y) equals total expenditure on the economy's output of goods and services. Thus, where C = consumption, I = investment, G = government purchases, X = exports, M = imports, and NX = net exports: Y = Also, national saving is the income of the nation that is left after paying for . Therefore, national saving (S) is defined as: S = Rearranging the previous equation and solving for Y yields Y = . Plugging this into the original equation showing the various components of GDP results in the following relationship: S = This is equivalent to S = , since net exports must equal net capital outflow (NCO, also known as net foreign investment). Now suppose that a country is experiencing balanced trade. Determine the relationships between the entries in the following table, and enter these relationships using the following symbols: > (greater than), < (less than), or = (equal to). Outcomes of Balanced Trade Imports Exports 0 Net Exports Y C+I+G Investment Saving Net Capital Outflow 0

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1. The multiplier helps explain

A. why a decrease in taxes causes real Gross Domestic Product (GDP) to fall by more than the amount of the decrease in taxes.

B. why a fall in investment cause real Gross Domestic Product (GDP) to rise by more than the amount of the decrease in investment.

C. why a rise in government expenditures causes real Gross Domestic Product (GDP) to rise by more than the amount of the increase in government spending.

D. why an increase in disposable income causes real Gross Domestic Product (GDP) to rise by less than the amount of the increase in disposable income.

2. If the marginal propensity to save (MPS) increases, the multiplier

A. decreases.

B. can either increase or decrease, depending on what happens to the marginal propensity to consume (MPC).

C. stays the same.

D. increases.

QUESTION 60

The investment function will shift when there is a change in

		A. the opportunity cost of retained earnings.
		B. firms' profit expectations.
		C. the cost of borrowing.
		D. the interest rate.

1.43 points

QUESTION 61

In the Keynesian model, whenever planned saving exceeds planned investment,

		A. there will be unplanned inventory accumulation.
		B. real GDP will not be influenced.
		C. the interest rate will remain unchanged.
		D. there will be unplanned inventory depletion.

1.43 points

QUESTION 62

In the Keynesian model, whenever planned saving is less than planned investment,

		A. there will be unplanned inventory depletion.
		B. the interest rate will remain unchanged.
		C. there will be unplanned inventory accumulation.
		D. real GDP will not be influenced.

1.43 points

QUESTION 63

Government purchases

		A. are determined by the political process.
		B. are determined by the public.
		C. are influenced by interest rates.
		D. are determined by suppliers.

1.43 points

QUESTION 64

If, at some level of output, total planned real expenditures are less than real Gross Domestic Product (GDP),

		A. real GDP will either fall or remain unchanged, depending on the MPC.
		B. real GDP will rise.
		C. real GDP remains unchanged.
		D. unplanned inventories will increase and real GDP will fall.

1.43 points

QUESTION 65

When the economy is operating at the equilibrium level of GDP, we know that

		A. total planned real expenditures equal real GDP.
		B. real net exports equal inventory changes.
		C. planned real investment spending equals real net exports of zero.
		D. total planned real consumption expenditures equal real GDP.

1.43 points

QUESTION 66

One divided by the marginal propensity to save (MPS) is the formula for

		A. the inverse of the multiplier.
		B. the multiplier.
		C. one minus the multiplier.
		D. autonomous consumption.

QUESTION 67

Thinking like an economist would, which is true of investment?

		A. Investment represents spending on capital goods.
		B. Investment is a stock concept.
		C. Investment is putting money into stocks and bonds.
		D. It is the portion of disposable income that is not used for consumption or saving.

QUESTION 68

Other things being equal, if input prices rise in a country, then there would be

		A. cost-push inflation.
		B. demand-pull inflation.
		C. cost-pull deflation.
		D. more production and a lower price level.

QUESTION 69

In the short run, if the price level rises, then the overall economy can temporarily produce beyond its nominal capacity. One reason for this is that

		A. existing capital equipment can be used more intensively.
		B. wage rates rise almost simultaneously with the price level.
		C. the unemployment rate usually rises dramatically along with the price level.
		D. workers can be switched from counted to uncounted production.

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ECON 3440 Lecture Notes - Lecture 11: Real Interest Rate, Autonomous Consumption, Aggregate Demand

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