Consider a household in the two-period consumption-savings model. The household has well-behaved preferences over period-1 and...
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Consider a household in the two-period consumption-savings model. The household has well-behaved preferences over period-1 and -2 consumption given by u(c₁, c2), is are con- strained by their period budget constraints, A = (1+i)4-1+Yt - Pic for t = 1, 2. (a) Use the Fisher Equation to transform the period budget constraints into real terms. (HINT: You may convert one period budget constraint directly, say for t = 1, and generalize to the other.) (b) Use your answers from part (a) to derive the Lifetime Budget Constraint (LBC) in real terms. Assume the initial and terminal conditions a2 = ap = 0. (c) Use indifference curve analysis to graphically locate the optimal choice (c₁, c₂). Label slopes and intercepts on your graph. (d) Locate on the budget constraint for your graph in part (c) a potential point for the combination real income (31, 32) that implies the household is a saver in period 1. (e) For each of the following assumptions, use indifference curve analysis to illustrate how a decrease in the real interest rate affects optimal choices of consumption (c₁, c₂) and period-1 savings, sri, starting from a situation as drawn in your graph for part (d). Conclude whether the household is better or worse off from the shock. To keep things from getting too messy, you should use a different diagram as drawn in part (d) for each shock, but omit the slope and intercept labels. Keeping the location for (c₁, c₂) and (31, 32) will be helpful. i. The income effect dominates the substitution effect ii. The substitution effect dominates the income effect Consider a household in the two-period consumption-savings model. The household has well-behaved preferences over period-1 and -2 consumption given by u(c₁, c2), is are con- strained by their period budget constraints, A = (1+i)4-1+Yt - Pic for t = 1, 2. (a) Use the Fisher Equation to transform the period budget constraints into real terms. (HINT: You may convert one period budget constraint directly, say for t = 1, and generalize to the other.) (b) Use your answers from part (a) to derive the Lifetime Budget Constraint (LBC) in real terms. Assume the initial and terminal conditions a2 = ap = 0. (c) Use indifference curve analysis to graphically locate the optimal choice (c₁, c₂). Label slopes and intercepts on your graph. (d) Locate on the budget constraint for your graph in part (c) a potential point for the combination real income (31, 32) that implies the household is a saver in period 1. (e) For each of the following assumptions, use indifference curve analysis to illustrate how a decrease in the real interest rate affects optimal choices of consumption (c₁, c₂) and period-1 savings, sri, starting from a situation as drawn in your graph for part (d). Conclude whether the household is better or worse off from the shock. To keep things from getting too messy, you should use a different diagram as drawn in part (d) for each shock, but omit the slope and intercept labels. Keeping the location for (c₁, c₂) and (31, 32) will be helpful. i. The income effect dominates the substitution effect ii. The substitution effect dominates the income effect
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a Use the Fisher Equation to transform the period budget constraints into real terms The Fisher equation states that the nominal interest rate i equal... View the full answer
Related Book For
Microeconomics An Intuitive Approach with Calculus
ISBN: 978-0538453257
1st edition
Authors: Thomas Nechyba
Posted Date:
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