Chapter 5 The Standard Trade Model. 2 Kernel of the Chapter A Standard Model of a Trading Economy ...
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Transcript of Chapter 5 The Standard Trade Model. 2 Kernel of the Chapter A Standard Model of a Trading Economy ...
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Chapter 5The Standard Trade Model
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Kernel of the Chapter
A Standard Model of a Trading Economy International Transfers of Income: Shifting the RD
Curve Tariffs and Export Subsidies: Simultaneous Shifts in
RS and RD
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Introduction
Trade theories have emphasized specific sources of comparative advantage which give rise to international trade.
The standard trade model is a general model of trade that admits these models as special cases.
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A Standard Model of a Trading Economy
The standard trade model is built on four key relationships:• Production possibility frontier and the relative supply
curve
• Relative prices and relative demand
• World relative supply and world relative demand
• Terms of trade and national welfare
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A Standard Model of a Trading Economy
Production Possibilities and Relative Supply• Assumptions of the model:
– Each country produces two goods, food (F) and cloth (C)
– Each country’s production possibility frontier is a smooth curve (TT)
• Production mix depends on the price of cloth relative to food, PC/PF.
• Isovalue lines
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Relative Prices and Demand• The value of an economy's consumption equals the
value of its production:
PCQC + PFQF = PCDC + PFDF = V
• The economy’s choice depends on the tastes of its consumers, represented graphically by a series of indifference curves.
A Standard Model of a Trading Economy
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TT
Figure 5-3: Production, Consumption, and Trade in the Standard Model
Cloth production, QC
Food production, QF
Q
D
Indifference curves
Food imports
Cloth exports
A Standard Model of a Trading Economy
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• If the relative price of cloth, PC/PF , increases, the economy’s consumption choice shifts from D1 to D2.
– Income effect– Substitution effect
A Standard Model of a Trading Economy
TT
Q1
VV1(PC/PF)1Q2
VV2(PC/PF)2
D2
D1
Cloth production, QC
Food production, QF
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The Welfare Effect of Changes in the Terms of Trade• Terms of trade
A Standard Model of a Trading Economy
Determining Relative Prices• Suppose a world of two countries:
– Home (which exports cloth)– Its terms of trade are measured by PC/PF
– Its quantities of cloth and food produced are QC and QF
– Foreign (which exports food) – Its terms of trade are measured by PF/PC
– Its quantities of cloth and food produced are Q*C and Q*
F
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• To determine PC/PF , one must find the intersection of world relative supply of cloth and world relative demand.
A Standard Model of a Trading Economy
RS
RD
Relative priceof cloth, PC/PF
Relative quantityof cloth, QC + Q*
C
QF + Q*F
(PC/PF)11
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Economic Growth: A Shift of the RS Curve• Is economic growth in other countries good or bad for
our nation?
• Is growth in a country more or less valuable when that nation is part of a closely integrated world economy?
A Standard Model of a Trading Economy
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Figure 5-6: Biased Growth
TT1 TT1TT2 TT2
A Standard Model of a Trading Economy
Cloth production, QC
Food production, QF
(a) Growth biased toward clothCloth production, QC
Food production, QF
(b) Growth biased toward food
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Relative Supply and the Terms of Trade• Export-biased growth
• Import-biased growth
A Standard Model of a Trading Economy
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Figure 5-7: Growth and Relative SupplyRelative priceof cloth, PC/PF
Relative quantityof cloth, QC + Q*
C
QF + Q*F
RS1
RD
1(PC/PF)1
RS2
(PC/PF)22
Relative priceof cloth, PC/PF
Relative quantityof cloth, QC + Q*
C
QF + Q*F
RS2
RD
2(PC/PF)2
RS1
(PC/PF)11
(a) Cloth-biased growth (b) Food-biased growth
A Standard Model of a Trading Economy
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International Effects of Growth• Export-biased growth in the rest of the world improves
our terms of trade, while import-biased growth abroad worsens our terms of trade.
• Export-biased growth in our country worsens our terms of trade, reducing the direct benefits of growth, while import-biased growth leads to an improvement of our terms of trade.
A Standard Model of a Trading Economy
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• Immiserizing growth– A situation where export-biased growth by poor nations
can worsen their terms of trade so much that they would be worse off than if they had not grown at all
– It can occur under extreme conditions: Strongly export-biased growth must be combined with very steep RS and RD curves.
– It is regarded by most economists as more a theoretical point than a real-world issue.
A Standard Model of a Trading Economy
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International Transfers of Income: Shifting the RD Curve
International transfers of income, may affect a country’s terms of trade by shifting the world relative demand curve.
Relative world demand for goods may shift because of:• Changes in tastes
• Changes in technology
• International transfers of income
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Effects of a Transfer on the Terms of Trade• When both countries allocate their change in spending
in the same proportions (Ohlin’s point)
• When the two countries do not allocate their change in spending in the same proportions (Keynes’s point)
International Transfers of Income: Shifting the RD Curve
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Figure 5-8: Effects of a Transfer on the Terms of Trade
Relative priceof cloth, PC/PF
Relative quantityof cloth, QC + Q*
C
QF + Q*F
RS
RD2
RD1
(PC/PF)22
1(PC/PF)1
International Transfers of Income: Shifting the RD Curve
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Presumptions about the Terms of Trade Effects of Transfers• A transfer will worsen the donor’s terms of trade if the
donor has a higher marginal propensity to spend on its export good than the recipient.
• In practice, most countries spend a much higher share of their income on domestically produced goods than foreigners do.
International Transfers of Income: Shifting the RD Curve
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Import tariffs and export subsidies affect both relative supply and relative demand.
Relative Demand and Supply Effects of a Tariff• Tariffs drive a wedge between the external prices and
internal prices
Tariffs and Export Subsidies: Simultaneous Shifts in RS and RD
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Tariffs and Export Subsidies: Simultaneous Shifts in RS and RD
Figure 5-9: Effects of a Tariff on the Terms of Trade
Relative priceof cloth, PC/PF
Relative quantityof cloth, QC + Q*
C
QF + Q*F
RS1
RD1
RD2
RS2
(PC/PF)11
(PC/PF)22
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Effects of an Export Subsidy– Worsens Home’s terms of trade and improves Foreign’s.
Tariffs and Export Subsidies: Simultaneous Shifts in RS and RD
Relative priceof cloth, PC/PF
Relative quantityof cloth, QC + Q*
C
QF + Q*F
RS1
RD1
RD2
RS2
(PC/PF)11
(PC/PF)22
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Implications of Terms of Trade Effects: Who Gains and Who Loses?• The International Distribution of Income
• The Distribution of Income Within Countries
Tariffs and Export Subsidies: Simultaneous Shifts in RS and RD