The Common 'Price' of Shifting Consumption: Comparing Slopes for Borrowers and Lenders
The slope of the feasible frontier, represented by the term , serves as a uniform 'price' for shifting consumption between the present and the future for both borrowers and lenders. For a borrower like Julia, this price is the cost of bringing $1 of consumption forward from the future to the present. Conversely, for a lender like Marco, it represents the gain from deferring $1 of consumption from the present to the future. Although they both operate with the same price, their actions are opposite: one moves purchasing power to the present, while the other moves it to the future.
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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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An individual faces a trade-off between consumption today (measured on the horizontal axis) and consumption in the future (measured on the vertical axis). The line representing all possible combinations of consumption passes through two points: Point A (100 units today, 220 units in the future) and Point B (200 units today, 110 units in the future). Based on the standard convention for describing such trade-offs, how is the rate of exchange between future and present consumption best described?
Interpreting the Slope of a Trade-Off
Consider a graph where the vertical axis represents units of future consumption and the horizontal axis represents units of present consumption. An individual's budget line on this graph slopes downward. A statement that 'the mathematical slope of the line is -1.1' and a statement that 'the economic trade-off is 1.1 units of future consumption for every 1 unit of present consumption' are contradictory statements.
Communicating Economic Trade-offs
Critiquing an Economic Interpretation
An economist is analyzing a graph that shows the trade-off between an individual's consumption in the present (on the horizontal axis) and consumption in the future (on the vertical axis). The line representing the possible combinations slopes downwards. The economist states, 'The trade-off is 1.1 units of future consumption for every 1 unit of present consumption.' A mathematician looking at the same graph calculates the slope of the line as -1.1. Which of the following statements best explains this difference in description?
An individual is analyzing their options for consumption today (represented on the horizontal axis) versus consumption in the future (represented on the vertical axis). They can choose between two bundles: Bundle A (50 units of consumption today, 150 units in the future) and Bundle B (100 units of consumption today, 90 units in the future). Match each term below with its correct numerical value based on this scenario.
Evaluating an Economic Reporting Convention
An individual's budget constraint for present and future consumption is represented by a downward-sloping line. If they give up 20 units of present consumption, they can gain 22 units of future consumption. According to the standard economic convention for describing this trade-off, for every one unit of present consumption foregone, the individual gains ______ units of future consumption.
Correcting a Flawed Economic Analysis
The Common 'Price' of Shifting Consumption: Comparing Slopes for Borrowers and Lenders
The Common 'Price' of Shifting Consumption: Comparing Slopes for Borrowers and Lenders
Learn After
Two individuals can trade consumption between today and one year from now. The terms of this trade-off are that for every $1.00 of consumption given up today, an individual receives $1.10 in one year. Person A has no income today but is guaranteed to receive $110 in one year. Person B has $100 today but no income in one year. If Person A decides to consume today (by borrowing) and Person B decides to save some of their income for the future (by lending), what is the best explanation for their different choices despite facing the identical trade-off?
The Two Sides of an Interest Rate
In a model of intertemporal choice, the term (1 + r) represents the trade-off between consuming now and consuming later, where 'r' is the interest rate. This term acts as a 'price' for shifting consumption through time. Match the role of this 'price' to the correct description for a borrower and a lender.
In a model where individuals can trade consumption between the present and the future, an increase in the interest rate makes it more costly for a borrower to consume more in the present. For a lender, this same increase in the interest rate represents a lower opportunity cost of consuming in the present.
The Dual Nature of the Intertemporal Price
Evaluating Consumption Choices Under a Common Price
Intertemporal Choice Scenario
In a model of intertemporal consumption, the 'price' of shifting $1 of consumption from the future to the present is $1.08. This implies that the annual interest rate, 'r', is ____%.
An individual has no income today but expects to receive a large sum of money in one year. They decide to consume a portion of that value today. Arrange the following statements into the logical sequence that describes their decision-making process.
In a simple two-period model, Alex has an income of $200 today and no income in the future, while Ben has no income today but will receive $220 in the future. Both can borrow or lend at an interest rate of 10%. Which statement correctly analyzes the trade-off each person faces between present and future consumption?