本题目来源于试卷: IB Economics Unit 3.1: Macroeconomics - Economic Output, AD & AS，类别为 IB经济学
[单选题]
Identify which of the following assumptions ex gb9t8 k siv4 ggy99ujsv-l9v1plains the persistej axp t+si ,er7r5e**hnce of recessio*r+h 7esx, * tr5jiaepnary gaps in the Keynesian model of aggregate supply.
A. There is a short-run equilibrium and a long-run equilibrium
B. Costs of production will eventually fall
C. The economy will eventually return to full employment
D. Wages are downwardly inflexible and will not fall
参考答案: D
本题详细解析:
In the Keynesian model, wages are assumhtmj;u51jroi7 ,/ ywued to be downwardly inflexible: they may rise in times of inflation, but rarely fall in times of recession. For this reason, the economy could get stuck in a recessionary gap if the government does not interveneuyt,w ;ou/ 7rh15imjj. This is because production costs will not fall, and so, aggregate supply will not increase.
Choices A, B, and C are all associated with the new classical/monetarist model, which assumes that recessionary gaps are not persistent.
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