The Multiplier Effect
The multiplier effect is a macroeconomic phenomenon where an initial change in autonomous spending, such as investment, results in a proportionally larger final change in the equilibrium level of national income or output. For example, an initial decrease in investment of €15 billion can lead to a total output reduction of €37.5 billion because the initial spending cut reduces incomes, which in turn leads to further cuts in consumption spending.
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Introduction to Macroeconomics Course
Ch.3 Aggregate demand and the multiplier model - The Economy 2.0 Macroeconomics @ CORE Econ
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In an economy represented by an aggregate expenditure model, a widespread loss of business confidence causes autonomous investment to fall by $50 billion. On a standard 45-degree line diagram, which statement best analyzes the complete graphical representation of this event's impact on the economy?
An economy, initially in equilibrium, experiences a sudden drop in autonomous investment. Arrange the following events to describe the correct sequence of the graphical adjustment to a new equilibrium on a 45-degree line diagram.
Analyzing a Housing Market Downturn
Graphical Analysis of a Spending Shock
On a 45-degree line diagram, a €20 billion decrease in autonomous investment will cause the aggregate demand curve to initially shift downward by an amount greater than €20 billion because of the multiplier effect.
Following a sudden decrease in autonomous investment, an economy adjusts to a new, lower equilibrium. Match each stage of this adjustment process with its correct representation on a 45-degree line diagram.
Graphical Adjustment to a Negative Demand Shock
In a standard 45-degree line diagram illustrating a negative demand shock, if autonomous investment falls by €15 billion, the aggregate demand curve will initially shift vertically downward by exactly ______ billion.
On a 45-degree line diagram, an economy is initially at equilibrium (Point A). A negative shock to autonomous spending shifts the aggregate demand (AD) curve down, and the economy eventually settles at a new, lower equilibrium (Point Z). How can the total fall in output (the horizontal distance from the income level at A to the income level at Z) be correctly deconstructed based on the graphical representation?
An economist analyzes a recession using a 45-degree line diagram. They observe that the economy has moved from an initial equilibrium to a new, lower equilibrium, resulting in a total decrease in national income of $200 billion. The economist claims that the initial negative shock to autonomous spending, which started the recession, must have been equal to this $200 billion decrease. Based on the principles illustrated by the diagram, evaluate this claim.
The Multiplier Effect
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The Multiplier Model
Calculating the Economic Impact of a New Project
In an economy, an initial increase in autonomous investment of $50 billion occurs. If the marginal propensity to consume is 0.8, what is the total resulting change in the equilibrium level of national income?
A government initiates a new public works project, increasing its autonomous spending. Arrange the following statements to correctly describe the sequence of events that follows.
Comparing Fiscal Policy Impacts
A one-time, autonomous increase in government spending of $100 million will cause the national income to increase by an amount greater than $100 million each subsequent year.