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 thdwqji by* p/+5u 8ago6e followins: /qlm+d1 uz2wc a;l k8v*7nxbaz9kmg assumptions explains the persistence of recessionary gaps in the Keynesian model of aggregaxq97/lbkzmv;ku az+w2amn* c lds1 8: te 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 assumed to be downwardlyh(x9 iufp yd7 r1wt72j 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 intervene. This is btry7x2hf( di9 w1up7jecause 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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