Intertemporal Choice Model
The intertemporal choice model is a framework for analyzing decisions about borrowing, lending, and investing, which are all methods for shifting purchasing power between the present and the future. It adapts the standard constrained choice model by treating 'consumption now' and 'consumption in the future' as two distinct goods. The fundamental trade-off in this model is that the opportunity cost of consuming more in the present is having less available for consumption later.
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CORE Econ
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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
Related
The Wage-Setting Model
Firm-Customer Interaction for Profit Maximization with a Differentiated Product
Borrowing and Lending as a Source of Mutual Gain
Optimal Time Allocation Strategy
An individual is deciding how to allocate their time between two activities. The diagram below shows their feasible frontier, which represents all possible combinations of outcomes they can achieve, and several indifference curves, which represent combinations of outcomes that provide the same level of satisfaction. Indifference curves further from the origin represent higher levels of satisfaction. Which point represents the individual's optimal choice?
The Condition for Optimal Choice
Consider a standard diagram of an individual's choice problem, with a downward-sloping feasible frontier and a set of convex indifference curves. At a specific point on the feasible frontier, an indifference curve intersects (crosses) the frontier rather than being tangent to it. Which of the following statements accurately analyzes this situation?
Evaluating Policy Interventions
In a constrained choice problem, if an individual is at a point on their feasible frontier where their personal valuation of an additional unit of a good (in terms of the other good) exceeds the actual trade-off required to obtain it, they are at their optimal point of consumption.
Analyzing the Effects of a Wage Change
An individual makes a choice between two goods, 'Good X' (on the horizontal axis) and 'Good Y' (on the vertical axis). Their optimal choice is represented by the point of tangency between their downward-sloping feasible frontier and an indifference curve. Now, suppose the individual's preferences change, causing them to value 'Good X' more highly relative to 'Good Y' than they did before. Assuming their feasible frontier remains unchanged, what is the most likely effect on their new optimal choice?
An individual is choosing between two desirable outcomes, represented on the horizontal and vertical axes of a diagram. The diagram includes a 'feasible frontier' showing the maximum achievable combinations and a set of 'indifference curves' where higher curves represent greater satisfaction. Match each described point with its correct economic interpretation.
An economist is analyzing an individual's decision-making process when faced with a limited set of options. Arrange the following steps in the logical order used to identify the individual's most preferred, achievable outcome.
Intertemporal Choice Model
Learn After
Slope as a Positive Value in Economic Trade-offs
Real Interest Rate (r)
Borrowing to Shift Consumption from the Future to the Present
Activity: Constructing Julia's Feasible Frontier
Consumption Smoothing
Economic Definition of Impatience
Optimal Intertemporal Choice as Tangency Point
Simplifying Assumption: Zero Inflation
Assumption of Constant Impatience in the Intertemporal Choice Model
MRT as the Rate of Transforming Future Consumption to Present Consumption
An individual initially chooses to be a saver, meaning they consume less than their income in the present to consume more in the future. If the interest rate increases, what is the definitive effect on their situation, assuming consumption in both periods is a normal good?
Consumption Decision Over Time
Optimal Intertemporal Consumption Choice
Consider an individual who is a borrower, choosing how to allocate consumption between a present period and a future period. If the interest rate they face for borrowing decreases, this individual will unambiguously be made better off.
Arrange the following steps in the correct order to determine an individual's optimal intertemporal consumption choice within the intertemporal choice model.
Match each component of the standard intertemporal choice graph with its correct economic description. The graph's horizontal axis represents 'Consumption Now' and the vertical axis represents 'Consumption Later'.
Analysis of Intertemporal Preferences and Constraints
In a model of choice between consumption now and consumption later, the feasible frontier illustrates all possible combinations of consumption an individual can afford. If the interest rate for borrowing and saving is 8%, the opportunity cost of consuming one additional dollar today is giving up $____ of consumption in the future.
Calculating Maximum Present Consumption
Consider an individual whose income is the same in the present period as it is in the future period. This combination of incomes, where they neither borrow nor lend, is their 'endowment point'. The market allows them to borrow or save at a given interest rate, which defines their feasible consumption possibilities. If this individual's optimal choice involves consuming more in the present than their current income, what must be true about their preferences when evaluated at their endowment point?
Opportunity Cost of Present Consumption
Endowment in Intertemporal Choice
Applying the Constrained Choice Framework to Intertemporal Decisions