Question 1

The utility function is constructed in such a way that consumption exhibits diminishing marginal utility.

Accepted Answer

The concept of diminishing marginal utility suggests that as consumption increases, the additional satisfaction or utility gained from each additional unit consumed decreases. This is often reflected in the shape of a downward-sloping utility function. Therefore, the statement is true.

Question 2

If we lower taxes today but raise them in the future, and  
, present wealth remains unchanged and consumption does not change.

Accepted Answer

The answer of If we lower taxes today but raise...

Question 3

Figure 16.6: Personal Savings Rate 
-According to one study, consumption expenditure falls about 17 percent when an individual retires, but remains, more or less, unchanged when all that is considered is food purchases.

Accepted Answer

The personal savings rate graph (Figure 16.6) is not relevant to this question. The statement is true according to the study mentioned.

Question 4

Because people cannot perfectly foresee income changes over their lifetimes, consumption should be predictable.

Accepted Answer

Consumption cannot be perfectly predictable as income changes are uncertain over an individual's lifetime. This uncertainty can be due to various factors such as changes in employment, unexpected expenses, and economic conditions.

Question 5

The intertemporal budget constraint is written as  
.

Accepted Answer

The answer of The intertemporal budget constraint is written as...

Question 6

Figure 16.6: Personal Savings Rate 
-Consider Figure 16.6. A likely explanation for the rise in savings rates beginning in 2007 is the continued strength in stock and housing markets.

Accepted Answer

The rise in savings rates beginning in 2007 can be attributed to the onset of the Great Recession, which caused households to become more cautious with their spending and prioritize saving over investing in the stock and housing markets.

Question 7

The left-hand side of the Euler equation,  
, represents total lifetime consumption, in dollars.

Accepted Answer

The answer of The left-hand side of the Euler equation,...

Question 8

If the Euler equation did not hold, then the real interest rate would be zero.

Accepted Answer

The Euler equation is derived from intertemporal optimization of consumption and is used to determine the optimal level of consumption over time. If it did not hold, it would mean that consumption behavior is not consistent with intertemporal optimization, but it would not necessarily imply that the real interest rate would be zero.

Question 9

The consumer's lifetime utility is given as

Accepted Answer

The answer of The consumer's lifetime utility is given as...

Question 10

In the intertemporal budget constraint, wealth is equal to lifetime income.

Accepted Answer

The answer of In the intertemporal budget constraint, wealth is...

Question 11

We can treat all households as homogeneous.

Accepted Answer

All households have different characteristics, such as income, size, and location. Therefore, treating all households as homogeneous can lead to inaccurate results in economic analysis.

Question 12

Individuals who have restricted access to credit markets must rely on transitory income to pay for unexpected expenses.

Accepted Answer

The answer of Individuals who have restricted access to credit...

Question 13

Behavioral economics treats all households as heterogeneous.

Accepted Answer

Behavioral economics recognizes that households have different preferences, biases, and decision-making processes, which lead to heterogeneity. This heterogeneity is crucial in understanding economic behavior and its implications.

Question 14

Consumption smoothing is an implication of the neoclassical model of consumption. This is because a rise in income either today or in the future reduces present value consumption, smoothing consumption.

Accepted Answer

Consumption smoothing is an implication of the neoclassical model of consumption because it suggests that individuals prefer to maintain a stable level of consumption over their lifetime. A rise in income, either today or in the future, does not reduce present value consumption but rather allows individuals to adjust their savings and consumption to maintain a stable consumption pattern over time.

Question 15

For any two periods, t and k,  
represents the "future's" budget constraint.

Accepted Answer

The answer of For any two periods, t and k,...

Question 16

With logarithmic utility, the Euler equation is given by  
or  
.

Accepted Answer

This is true as logarithmic utility gives rise to a constant coefficient of relative risk aversion, which leads to a constant intertemporal marginal rate of substitution and therefore a constant interest rate in the Euler equation.

Question 17

Household consumption accounts for about one-half of U.S. GDP.

Accepted Answer

Household consumption actually accounts for about two-thirds of U.S. GDP, making it the largest component of the GDP.

Question 18

Consider consumption in two periods,  
and  
. Consumption smoothing implies people prefer to consume  
if  
and R = 0.

Accepted Answer

Consumption smoothing means that individuals prefer a relatively constant level of consumption over time. Therefore, if there is no discounting (R=0), individuals would prefer to consume the same amount in both periods, which implies consuming less in the first period and saving more for the second period.

Question 19

When applied to the first President Bush's temporary tax cuts, which were repealed six months after they were implemented, Ricardian equivalence predicts that households did not boost their spending.

Accepted Answer

Ricardian equivalence suggests that households will not change their spending habits in response to temporary tax cuts, because they will anticipate that taxes will eventually have to be raised to pay for the resulting increase in government debt. So, in the case of the first President Bush's temporary tax cuts that were repealed six months later, households were not expected to significantly boost their spending.

Question 20

In the intertemporal budget  
, is today's saving for the future.

Accepted Answer

The intertemporal budget includes both current consumption and savings for future consumption. Therefore, today's saving is included in the intertemporal budget as a means of preparing for future consumption.

Quiz 16: Consumption

The utility function is constructed in such a way that consumption exhibits diminishing marginal utility.

If we lower taxes today but raise them in the future, and , present wealth remains unchanged and consumption does not change.

Figure 16.6: Personal Savings Rate -According to one study, consumption expenditure falls about 17 percent when an individual retires, but remains, more or less, unchanged when all that is considered is food purchases.

Because people cannot perfectly foresee income changes over their lifetimes, consumption should be predictable.

The intertemporal budget constraint is written as .

Figure 16.6: Personal Savings Rate -Consider Figure 16.6. A likely explanation for the rise in savings rates beginning in 2007 is the continued strength in stock and housing markets.

The left-hand side of the Euler equation, , represents total lifetime consumption, in dollars.

If the Euler equation did not hold, then the real interest rate would be zero.

The consumer's lifetime utility is given as

In the intertemporal budget constraint, wealth is equal to lifetime income.

We can treat all households as homogeneous.

Individuals who have restricted access to credit markets must rely on transitory income to pay for unexpected expenses.

Behavioral economics treats all households as heterogeneous.

Consumption smoothing is an implication of the neoclassical model of consumption. This is because a rise in income either today or in the future reduces present value consumption, smoothing consumption.

For any two periods, t and k, represents the "future's" budget constraint.

With logarithmic utility, the Euler equation is given by or .

Household consumption accounts for about one-half of U.S. GDP.

Consider consumption in two periods, and . Consumption smoothing implies people prefer to consume if and R = 0.

When applied to the first President Bush's temporary tax cuts, which were repealed six months after they were implemented, Ricardian equivalence predicts that households did not boost their spending.

In the intertemporal budget , is today's saving for the future.