Effect of an Interest Rate Increase on Julia's and Marco's Feasible Frontiers (Figure 9.14)
This diagram, also known as Figure 9.14, illustrates how an interest rate increase from 20% (r = 0.20) to 78% (r = 0.78) affects the feasible frontiers for both Julia and Marco. A key consequence of this rate hike is that both of their feasible frontiers become steeper. The graph plots 'consumption now' against 'consumption later'. At the initial 20% rate, Marco's frontier—starting from his endowment at (100, 0)—extends to (0, 120), while Julia's—from her endowment at (0, 100)—reaches (83, 0). After the rate increases to 78%, Marco's frontier expands outward to (0, 178), while Julia's frontier contracts, ending at (56, 0).
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Introduction to Microeconomics Course
The Economy 2.0 Microeconomics @ CORE Econ
Ch.9 Lenders and borrowers and differences in wealth - The Economy 2.0 Microeconomics @ CORE Econ
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Effect of an Interest Rate Increase on Julia's and Marco's Feasible Frontiers (Figure 9.14)
An individual is a net lender, meaning they consistently save some of their current income to consume more in the future. If the interest rate they earn on their savings increases, how would this change influence their decision about how much to consume now?
Analyzing a Lender's Counterintuitive Choice
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True or False: Following a significant increase in the interest rate, an individual who lends money will always choose to lend more because the reward for postponing consumption has increased.
For an individual who lends a portion of their income, an increase in the interest rate creates two distinct effects on their decision to consume now versus save for the future. Match each effect with its correct description.
Deconstructing a Lender's Response to Interest Rate Changes
Dominant Economic Effects on a Lender
Suppose an individual who regularly lends a portion of their income sees a significant increase in the interest rate they receive. Following this change, you observe that they choose to increase their current consumption. What can be definitively concluded about the economic effects influencing their decision?
Conflicting Incentives for a Lender
Analyzing a Lender's Response to a Rate Increase
Marco's Optimal Choice When Lending: Point D (60, 48)