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Alfred · 2024年05月13日

B怎么错了

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问题如下:

N’Diarra’s understanding of the two growth theories is most accurate with regard to:

选项:

A.both classical growth theory and endogenous growth theory.
B.endogenous growth theory. C.classical growth theory.

解释:

Solution

C is correct. N’Diarra’s understanding of classical growth theory is correct, as is her understanding of its implications. Classical growth theory holds the view that the growth rate of real GDP per person is temporary because of population explosion. Her description of endogenous growth theory is not accurate. She references a steady state rate of growth and diminishing marginal returns, which are tenets of neoclassical growth theory.

B is incorrect because her understanding of the endogenous growth theory is incorrect.

A is incorrect because her understanding of classical growth theory is correct, but her understanding of endogenous growth theory is incorrect.

中文解析:

C是正确的。恩迪亚拉对古典增长理论的理解是正确的,她对其含义的理解也是正确的。经典增长理论认为,由于人口爆炸,实际人均GDP的增长率是暂时的。她对内生增长理论的描述并不准确。她提到了稳定的增长率和边际收益递减,这是新古典增长理论的原则。

B是不正确的,因为她对内生增长理论的理解是错误的。

A是不正确的,因为她对古典增长理论的理解是正确的,但是她对内生增长理论的理解是不正确的。

如题

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笛子_品职助教 · 2024年05月14日

嗨,从没放弃的小努力你好:


B怎么错了


Hello,亲爱的同学

题目问题中相关陈述在这里:

N’Diarra believes that according to the classical growth theory, gains in per capita GDP are temporary because the resulting population explosion will lower per capita GDP to subsistence real wage levels. She considers endogenous growth theory to be more realistic, believing that (1) investments, such as the new tire factory, will increase the rate of per capita output growth until the steady state rate of growth is achieved; and (2) investment in research and development will boost growth even further, thus extending the abnormal growth period before diminishing marginal returns eventually set in.


错就错在:diminishing marginal returns

如果是内生增长,投入资本的同时,也会同步收获技术进步。资本投入得越多,技术进步得越多。

因此,资本投入的回报率,不会是边际递减的,因为技术进步,就会提高回报率。

资本递减的边际收益,本身就与“资本驱动技术进步”矛盾。


同学注意:diminishing marginal returns 是关键词,看到这个关键词就要想到新古典。

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