Тест: Understanding Economic Growth Dynamics — 9 въпроса

1. In the context of the Solow model, what happens when an economy reaches its steady state?

A. Growth accelerates rapidly

B. Capital stock remains constant and growth stops unless technological progress occurs

C. Investment exceeds depreciation significantly

D. Savings rate drops to zero

Answer: (B)

Обяснение

At the steady state, investment equals depreciation, meaning the capital stock remains constant. Without technological progress, growth halts at this point. Sustained growth requires technological improvements that shift the production function upward.

2. What is the primary driver of sustained long-term economic growth according to the revision sheet?

A. Capital accumulation (K)

B. Technological progress (A)

C. Effective labor (H)

D. Savings rate (s)

Answer: (B)

Обяснение

Technological progress (A) is identified as the main driver of long-term growth because it shifts the production function upward, enabling indefinite growth beyond limits imposed by capital or labor.

3. What is the primary driver of long-term economic growth according to the summary?

A. Technological progress

B. Increase in effective labor units

C. Capital accumulation without technological progress

D. Higher savings rates

Answer: (A)

Обяснение

The summary emphasizes that technological progress is the sole factor capable of generating sustained long-term growth. While capital and labor contribute to short-term growth, technological improvements shift the production function upward, enabling indefinite growth.

4. In the context of the Solow model, what does the steady state represent?

A. A point where technological progress accelerates.

B. A point where investment exceeds depreciation.

C. A point where investment equals depreciation.

D. A situation where capital and labor both decline.

Answer: (C)

Обяснение

The steady state occurs when investment equals depreciation, meaning that capital stock remains constant over time unless technological progress occurs, halting growth from capital accumulation alone.

5. Why do poorer countries tend to grow faster than richer countries, according to the summary?

A. Because they invest more in technology

B. Because they have higher savings rates

C. Due to diminishing returns to capital and the possibility of catch-up growth

D. Because they have more effective labor units

Answer: (C)

Обяснение

The summary explains that poorer countries can grow faster because they start below their steady state and can exploit existing technologies, leading to catch-up growth. This is due to diminishing returns to capital, which makes capital accumulation more productive in poorer economies.

6. Which component is NOT directly considered part of the production function Y = F(K, H, A)?

A. Interest rates.

B. Capital (K).

C. Effective labor (H).

D. Technology (A).

Answer: (A)

Обяснение

Interest rates are a financial variable and are not directly part of the production function, which models output based on real inputs: capital, effective labor, and technology.

7. What does the growth rate formula (Y_{t+1} - Y_t) / Y_t measure?

A. The ratio of capital to labor.

B. The percentage increase in GDP over time.

C. The ratio of savings to income.

D. The rate of technological innovation.

Answer: (B)

Обяснение

This formula calculates the proportional change in per capita GDP from one period to the next, reflecting the growth rate of the economy.

8. According to the revision sheet, what effect does exponential growth have on income disparities?

A. It reduces income disparities.

B. It causes disparities between rich and poor nations.

C. It has no effect on income disparities.

D. It only affects rich nations.

Answer: (B)

Обяснение

Exponential growth causes disparities to widen because richer countries grow faster due to larger initial capital and investment, thus increasing income inequality between nations.

9. What role do institutions play in economic growth as per the revision sheet?

A. They primarily determine technological progress.

B. They influence incentives for savings, investment, and innovation.

C. They replace the need for technological development.

D. They have minimal impact on growth prospects.

Answer: (B)

Обяснение

Institutions shape economic incentives that drive savings, investment, and innovation, thus significantly affecting growth prospects and inequality.