VIII-Production Function-Business cycle-5 Flashcards

1
Q

how is economic growth measured?

A
  1. growth in real GDP
  2. per capita GDP - 生活水平,购买力
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2
Q

how is sustainable rate of economic growth measured?

A

increase in the economy’s productive capacity/

potential GDP

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3
Q

宏观经济学的production function

Cobb-Douglas production function

A

Y=AF(L,K)

Y = TKαL(1-α)

A: total factor productivity

Y = aggregate output

K = amount of capital available

L = size of labor force

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4
Q

TFP

及结论

A

total factor productivity

  1. TFP主要影响因素是科技进步
  2. like potential GDP, TFP is not directly observed, must be estimated
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5
Q

constant returns to scale:

definition

A

increasing all inputs by a fixed percentage

leads to the same percentage increase in output

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6
Q

宏观production function

体现的两个要点

A
  1. 同比增长 (constant returns to scale)
  2. 某一要素的diminishing marginal productivity
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7
Q

diminishing marginal productivity

可得到哪两个结论

A
  1. 经济发展不能全依赖于capital investment
  2. 发展中国家(由于更依赖投资)经济增速往往高于发达国家
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8
Q

Production Function 变形一

Robert Solow’s equation

for calculating

growth in potential GDP

A

Growth in potential GDP= growth in technology +WL(growth in labor) + WC (growth in capital)

Y = TKαL(1-α)

Δ%Y = Δ%T + WcΔ%K + WLΔ%L

WLWC: share of c, l in national income

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9
Q

Production Function 变形二

Solow’s equation

in per capita GDP

及结论

A

Growth in per capita GDP =Growth in technology+ Wc(growth in capital-to-labor ratio)

Y = TKαL(1-α)

两边除以L, y = T*(K/L)α

Δ%y = Δ%T * WcΔ%(K/L)

结论: 主要靠科技对人均GDP做贡献 (因只剩Wc)

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10
Q

capital-to-labor ratio

A

人均资本,capital deepening 资本深化

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11
Q

what are the main parameters to

observe

how sustainable growth is?

A

labor productivity

and

growth rate of labor productivity

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12
Q

labor productivity

equation

A

labor productivity

=

Real GDP/Aggregate hours

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13
Q

Potential GDP: a mesurable equation

A

Potential GDP = Aggregate hours worked + Labor productivity

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14
Q

Production Function 变形三

labor perspective

A

potential growth rate=long-term growth rate of labor supply+long-term labor productivity growth rate

Y = Y/L * L, Y/L=y=labor productivity

Δ%Y = Δ%y + Δ%L

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15
Q

four phases of business cycle

A

trough

expansion

peak

contraction

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16
Q

Durable goods

对经济周期的指示作用

A

because they have longer lives,

a weakeness in durables spending signals an economic weakness,

an increase signals a recovery

17
Q

permenant income

与durable goods还是non-durable关系更大?

A

non-durables

durable goods 与 PDI关系大,无论其收入来源

18
Q

in business cycle

productivity is most likely highest when

A

at the bottom of a recession

19
Q

商业周期中,看capital spending的

一个重要/先行指标是

A

orders for equipment

(调整快)

20
Q

商业周期中,

存货变化有什么特点

A

变动更剧烈,波动幅度大

21
Q

商业周期中,

inventory-sales ratio 的变化情况

A
  1. approaching peak:上升,存货开始积压
  2. reaching the trough: 降低,销售增加
22
Q

商业周期中,

Housing Sector有哪些特点

A
  • Interest Rate:与house sale反向
  • Income level: 与house sale 同向
  • Investment: 往往overbuilding
  • Demographics: 人口(家庭形成)是一个潜在长期驱动因素
23
Q

商业周期中,

进出口部门有什么特点

A
  1. 进口反应国内需求(国内周期)
  2. 出口反应外部需求(外国周期)
  3. 汇率强弱将改变进出口
24
Q

Business Cycle: Early Expansion

Economic Activity

Employment

Capital Spending

Inflation

A
  • E.A.: stabbilize, begin to increase
  • Employment: 未开始招新,失业率高,work overtime
  • C.S.: 最先housing, durable, orders of light producer equipment
  • inflation: remain moderate, may even fall
25
**Business Cycle: Late Expansion** Economic Activity Employment Capital Spending Inflation
* E.A: accelerating * Emp: 开始招人,失业率下降 * C.S.:开始购置heavy equipment * inflation: pick up modestly
26
**Business Cycle: Peak** Economic Activity Employment Capital Spending Inflation
* E.A: decelerating rate of growth * Emp:找人速度变慢,失业率仍降低,但速度变慢 * C.S:还在扩张,但slow down * inflation: **ACCELERATING**
27
**Business Cycle: Contraction** Economic Activity Employment Capital Spending Inflation
* E.A: decline * Emp: 开始失业,失业率上升 * C.S:最先表现在industrial production, housing, durable, new business equipment order * inflation:decelerates but with a lag
28
Keynesian theory 1.认为什么产生了周期 2。对政府行为的主张 3。limitaitons
1. AD的变动产生经济周期。 2。在衰退时扩大政府财政赤字,增加支出。虽承认市场调节的力量,但是太慢"in the long run, we're all dead"
29
凯恩斯主义 limitations
1. 政府赤字太大,易失控 2. 也许短期有用,但长期易致经济过热,更大伤害 3. 财政政策也存在滞后
30
Neo-Keynesians 理论要点
不仅有sticky wage (Kaynes),而且所有price都有粘性 sticky prices/menu cost价格影响滞后性 ↓ 市场总会存在微小不均衡 ↓ gov could always help
31
Monetarist School (Friedman) 1。认为什么产生经济周期 2。认为政府行为
1. 反凯恩斯主义 2. 央行无规律的货币供给导致经济周期 3. 货币供给、财政政策都应一直适度,不要乱发货币
32
Neoclassical theory 1要点 2。认为什么导致经济周期 3。对政府看法
1. 看不见的手,自由市场 2. 技术进步(某一行业暂时)导致经济周期,拨动只存在行业内部,不存在全经济拨动 3。政府不应干预经济
33
奥地利学派(Haykek) 1。特点 2。认为什么产生经济周期 3。对政府看法
1. 新古典主义分支 2. 认为政府因素使得经济产生动荡 3. 应限制政府作用,使市场尽快自身调节
34
New Classical School 1.学派名称 2。认为什么产生经济周期 3。政府主张 4。要点
1. Real Business Cycle theory (RBC) 2. external shock + technology影响经济周期 3. 主张政府不要干预 4. more focus on supply curve
35
Minsky moment
经济增长至顶峰,信贷扩大,资产泡沫 一旦有人对未来开始担心,市场遍崩塌 cartoon: walk over a cliff and walking on air