Open Economy I Flashcards

1
Q

Define Closed Economy

A

Economy that does NOT Interact with other Economies in the world

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2
Q

Define Open Economy

A

Economy that does Interact with other Economies in the world

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3
Q

Why is International Trade good?

A

Countries Specialise in G+S they have Comparative Advantage in

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4
Q

How do Open Economies Interact with the world

A

Buy + Sell G+S and Assets

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5
Q

Define Exports

A

G+S Produced Domestically + Sold/Consumed Abroad

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6
Q

Define Imports

A

G+S Produced Abroad + Bought/Consumed Domestically

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7
Q

Define Net Exports

A

Value of a nation’s Exports – Imports

Trade Balance

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8
Q

Define Trade Surplus

A

Excess of Exports over Imports

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9
Q

Define Trade Deficit

A

Excess of Imports over Exports

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10
Q

Define Balanced Trade

A

Exports = Imports

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11
Q

What factors affect Exports, Imports + NX?

A
  • Tastes of Consumers fro Domestic + Foreign G+S
  • Prices of G+S at Home vs Abroad
  • Exchange Rates
  • Incomes of Consumers at Home + Abroad
  • Cost of Transporting Good between countries
  • Gov. Policy towards International Trade
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12
Q

What is NCO?

A

Net Capital Outflow

NCO = Purchase of Foreign Assets by Domestic Residents – Purchase of Domestic Assets by Foreign Residents

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13
Q

What are the 2 main flows of Capital?

A

FDI- buying FoPs– e.g. Factories

FPI- buying Equities– e.g. Shares

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14
Q

What factors affect NCO?

A
  • Real Interest Rate paid on Foreign Assets
  • Real Interest Rate paid on Domestic Assets
  • Perceived Economic + Political risks of holding Assets abroad
  • Gov. Policy that affects Foreign ownership of Domestic Assets
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15
Q

Why is NX = NCO all the time?

A

If NX > 0 - Trade Surplus
–> Sells more G+S to Foreigners than it’s Buying–> Increased NX
- From Net Sale of G+S- Country receives Foreign Currency –> Increased NCO- Foreign Asset
THEREFORE- NX = NCO > 0

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16
Q

What is the National Account Identity under an Open Economy?

A

Y = C + I + G + NX

17
Q

What is the National Savings Identity?

A

S = Y – C – G = I + NX
= I + NCO, since NCO = NX
National Saving = Domestic Investment + NCO

18
Q

What happens to Savings Identity if there is a Trade Surplus?

A

Trade Surplus–> NX > 0
S = Y – C – G = I + NX
=> NCO = S –I > 0

19
Q

Define Nominal Exchange Rate

A

Rate at which a Currency of one country can be traded for another

20
Q

Define Appreciation

A

Increase in Value of a Currency

- Can buy more Foreign Currency

21
Q

How is the Value of a Currency measured?

A

Amount of Foreign Currency one Unit of Domestic Currency can buy

22
Q

Define Depreciation

A

Decrease in Value of a Currency

- Can buy less Foreign Currency

23
Q

Define Real Exchange Rate

A

Ratio at which one can trade G+S of Country for G+S of another country

24
Q

How is Real Exchange Rate calculated?

A

R.E.R = [ Nominal ER x Domestic Prices] ÷ Foreign Prices

= [ e x P ] ÷ P*

25
Q

What does [ e x P ] ÷ P* show?

A

Quantity of Basket of Goods which a Domestic Unit of the Basket can buy Abroad

26
Q

How does a Depreciation in UK R.E.R affect NX?

A

UK G+S relatively Cheaper than Foreign G+S –> Consumers at home + abroad– Buy more UK G+S –> Increased X + Decreased M –> Increased NX

27
Q

What is PPP?

A

Purchasing Power Parity

  • LR Theory of ER
  • A unit of any given currency should be able to Buy the SAME Quantity of G+S in ALL Countries
28
Q

What condition is necessary for PPP?

A

R.E.R must = 1

[ e x P ] ÷ P* = 1

29
Q

Why must [ e x P ] ÷ P* = 1 for PPP?

A

Arbitrage- If R.E.R differs–> Can Buy cheap in one country + Sell in another for Profit
- Arbitrage would continue until Equality (Parity) in Prices sets in

30
Q

What does Theory of PPP say about Nominal ER + Price Levels?

A

Nominal ER between 2 countries reflects Price Levels in the countries
Since [ e x P ] ÷ P* = 1 => If e = P* ÷ P, when Relative Prices change–> e Changes

31
Q

How does M.S affect e?

A

Increased M.S –> Increased Prices –> Decreased e- Depreciation

32
Q

What does Quantity Theory of Money explain?

A

How M.S affects Price Level

33
Q

What does PPP explain?

A

How Price Level affect Nominal ER

34
Q

What’s the main Limitations of PPP?

A

Theory does NOT always hold in practice- except LR

  • Shown by fact that R.E.R is NOT Constant over time
    1. Many G+S NOT traded easily- e.g. Haircut service
    2. Even Tradable G+S NOT always Perfect Substitutes- May have different characteristics
  • Transaction costs- Reduce Profitable Arbitrage