Consumption And Investment Function

Step 1: Understanding residential investment.
Residential investment is affected by factors such as real return, interest rates, inflation, and the cost of ownership.

Step 2: Analysis of options.
- (A) It depends on the net real return obtained by owning housing: This is correct. Residential investment depends on the net return from owning a house, considering factors such as rental income and price appreciation.
- (B) The combination of high nominal interest rates and high inflation strongly encourages housing investment: This is incorrect. High nominal interest rates typically discourage housing investment by increasing borrowing costs.
- (C) The demand for housing is insensitive to the nominal interest rate: This is incorrect. The demand for housing is highly sensitive to nominal interest rates because higher rates increase borrowing costs.
- (D) The cost of owning a house rises almost proportionately with the real interest rate: This is correct. As real interest rates increase, the cost of owning a house (through mortgage payments) also rises.

Step 3: Conclusion.
The incorrect statement is (C) because housing demand is indeed sensitive to interest rates.

Step 1: Understand the life cycle theory of consumption.
The life cycle theory of consumption, proposed by economists such as Ando and Modigliani, suggests that individuals plan their consumption and savings behavior over their lifetime. Consumption decisions are based on both permanent and transitory income.

Step 2: Analysis of options.
- (A) Consumption is constant throughout lifetime: This is incorrect. The theory suggests that individuals consume based on their lifetime income, which may fluctuate.
- (B) Marginal propensity to consume out of permanent income is small: This is correct. The theory postulates that individuals are more likely to consume out of their permanent income rather than transitory income.
- (C) Marginal propensity to consume out of transitory income is large: This is correct. The life cycle theory states that people are more likely to consume out of temporary income, such as windfalls or bonuses, rather than out of permanent income.
- (D) It emphasizes how to maintain a stable standard of living over the course of life: This is correct. The theory focuses on how individuals smooth their consumption and maintain a consistent standard of living across different life stages.

Step 3: Conclusion.
The correct answer is (B), (C), and (D) only, as they accurately describe the life cycle theory of consumption.

Residential investment is largely driven by factors such as the return on housing investments, interest rates, and the cost of ownership. It is a key component of the housing market. - (A) It depends on the net real return obtained by owning housing: This is correct. The net real return (after considering interest rates, inflation, and maintenance costs) plays a significant role in the decision to invest in housing.
- (B) The combination of high nominal interest rates and high inflation strongly encourages housing investment: This is incorrect. High nominal interest rates typically discourage housing investment because they increase the cost of borrowing. While high inflation might increase the nominal return on housing, the combination of these factors tends to reduce housing investment rather than encourage it.
- (C) The demand for housing is insensitive to the nominal interest rate: This is incorrect. The demand for housing is sensitive to nominal interest rates. Higher interest rates increase the cost of mortgages, which reduces housing demand.
- (D) The cost of owning a house rises almost proportionately with the real interest rate: This is correct. Higher real interest rates generally increase the cost of owning a home, as mortgage payments rise in response to higher interest rates.
The correct answer is (C) because the demand for housing is highly sensitive to changes in nominal interest rates. An increase in interest rates typically reduces demand for housing due to higher mortgage costs. Final Answer: (C) The demand for housing is insensitive to the nominal interest rate.