EC340H
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- Relationship between Growth and Trade
- Data shows that countries that have higher growth tends to be more open to trade.
- What do we mean by "growth" graphically?
- The PPF grows outward/shifts to the right
- Two kinds of causes of growth
-
1. Factors of Production
2. Technology - Increase in Factors of Production (examples)
-
1. Growth in labor force
2. accumulation of physical capital
3. accumulation of human capital (education)
4. accumulation/new find of mineral resources - How do changes in factor supplies affect quantities of production?
- Rybczynski Theorem
- Rybczynski Theorem:
- Suppose economy's supply of capital increases (holding labor constant) then, holding relative prices constant, economy will produce more of a capital intensive good and less of the labor intensive good. {and vice versa K<-->L)
- Rybczynski Theorem: results graphically
-
-The PPF shifts out but it is BIASED towards the capital-intensive good (if capital supply increased)
-So the input that grows at a faster rate makes the PPF shift in a biased direction toward the good that is intensive in the faster growing input. - What are the two endpoints of the new PPF of the Rybcynski Theorem represent?
-
-given that the factor that good x is intensive in increased,
-The point at which we would only produce good y (increased very little) and if we were only producing good x (increased a lot) - graphically, what does it mean to "hold relative prices constant"?
- stick to the same price line; i.e. slope does not change
- How does Growth affect Trade?
-
ex. China and U.S.
-if China's K increased, then the incentive to trade is reduced since the degree of comparative advantage is reduced; reduces import demand for capital intensive goods from U.S. which leads to a reduced production in labor intensive goods, therefore exports to U.S. is also reduced - Effects of changes in world demand and supply of K-intensive vs. L-intensive goods...
- work to reduce the international price of K-intensive goods relative to L-intensive goods
- "terms of trade"
-
imports relative to exports
"improvement" and "deterioration" - Immiserizing Growth
-
case in which extremely biased growth in direction of export good causes such a big deterioration in TOT that welfare is LOWER after growth compared to pre-growth
(graphically, relative price reduced and lower IC) - How does trade affect growth?
-
(recently opened topic)
Trade libralization:
-made firms more productive/efficient
-but also caused less efficient firms to drop out of the market/exit the market - Possible reasons for results of trade liberalization
-
1. transfer of technology
2. reverse engineering
3. better allocation of resources (i.e. higher skilled workers not working in factories) - Rybczynski Theorem (GRAPH)
-
PPF shifts out but it is BIASED towards the capital-intensive good - Graphs of Importing Country: Include Import Demand Curve, Free Trade, label Imports
-
Import demand curve initial price set at the equilibrium price w/o trade - Small Importing Country: Draw Import Demand Curve and Export Supply curve
-
-export supply curve is flat because they are "price-takers" - Import quotas
- a legal limitation on the quantity (value) of a good that can be imported per period of time
- quota distorted price
- the price at which the amount of imports demanded equals what the law says we can import
- "quota rent"
- monopoly profit/not a normal rate of return on investment
- Ways to allocate licenses
-
1. Randomly give away
2. Auction off licenses (then govt gets "c")
3. Have to PROVE worthy of license (not completely all shown on graph) - amount of import quota has to equal
- the total # of licenses
- Two major types of Non-Tariff Barriers
-
1. Import Quotas
2. "Voluntary" Export Restraints (VERs) - "Voluntary" Export Restraints (VERs)
- "voluntarily" limit how much they choose to export
- What does VER do for competition
- it is almost as if the competition is taken away since guaranteed market through export restrains
- Who are the losers and winners of VERs?
-
Losers: US Consumers
Winners: US and Japanese Producers - "Quality Upgrading"
-
-unintended effect of VER
-since limitation on quantity exported, only export highest mark-up car (with biggest profit) - Unintended effects of VERs
-
1. Quality Upgrading
2. RENAMING of products (Playing games with categorizing things to avoid restrictions: better for U.S. consumers, worse for U.S. automakers) - Other NTBs (Non-Tariff Barriers)
-
1. Healthy and Safety Regulations (ex. EU, US and beef; prescription drugs)
2. Red Tape (Regulations that are confusing and complicated)
3. Gov't procurement practices - Red Tape
-
-Regulations that are confusing and complicated
1. raise cost of business transactions
2. make transactions uncertain
example: France and VCRs, one port - VER deadweight lost =
- (1/2)*(Q imports reduced)*(increased price)
- ad valorem
-
% value tariff
(ex. sales tax) - deadweight loss for ad valorem tariff
-
(1/2)*(price increase due to the tariff)*(Reduction in Q of imports)
note: price increase due to the tariff = t*Pft - DWL as share of GDP
- = (1/2)*(t)*(Reduction in Q of imports)*(Value of imports/GDP)
- so how big is the DWL as share of GDP in the real world?
- probably less than 1% of GDP...relatively small
- "Most Favored Nation"
-
clause in WTO agreement
no country can discriminate against other countries of the WTO -
Complete the diagram to show an Import Quota -
At Pqd, amount that we want to import is exactly the amount we are legally allowed to do -
Complete to show the DWL due to tariff; how do we calculate the DWL -
A = (1/2)*(Q imports reduced)*(Increased price) - Draw a diagram to show the effects of an import quota on an import country's market like the U.S.
-
Pqd = quota distorted price
Q bar = amount of import quota -
What are a, b, c, d for Import Quota? -
a = increase in producer surplus
a + b + c + d = loss of consumer surplus
c = the value of the right to import the product; Quota Rent -
What is the relationship between "c" and Q bar? -
total # licenses have to add up to Q bar; "c" is representative of the licenses -
What is the net effect of welfare for Import Quota? -
If all licenseholders are U.S., then the net effect of welfare is loss of b+d -
What are the losses/gains if this is for Volutnary Export Restraint? -
area c is earned by exporters
loss to consumers: a + b + c + d
losers: U.S. consumers
Winners: U.S. and Japanese Producers -
What are the implications on price with a flat Export Supply Curve? -
If the price is less than Pft then export everything to us
If price is greater than Pft then no exports to us
PRICE TAKERS - specific tariff
- tax levied on good PER UNIT of import
- Pft =
- free trade price
- Ptd =
-
tariff distorted price
= Pft + t - Ptd - Pft =
- tariff
- How does tariff affect economic welfare? (Think only about importing country)
-
1. Higher prices --> consumers worse off
2. Higher price --> benefit Domestic Producers
3. Govt collects revenue (better off) - Consumer surplus is
- everything under Demand Curve but above P
- Producer Surplus is
- above the Supply curve but above the price line
- To a small importing country, government revenue is
- a GOOD thing
- Government Revenue =
- tariff * Quantity of Imports
- b =
-
production effect/distortion
small since the country has a comparative DISadvantage, inefficient use of resources - d =
-
consumption effect/distortion
represents loss to consumers who don't buy as much due to increase in price - off-setting gain
- where there is a loss AND a gain; i.e. comes out of consumers' pockets and into producers'/govts' pockets
- For a small importing country, what is the effect of tariff on welfare?
- introducing a tariff ALWAYS reduces welfare (assume everthing else is going OK in economy)
- Difference between small importing country and large importing country?
- upward sloping export supply curve in world market
-
Large importing country
Ptd = -
t + Pexport
(tariff + the export country price) - How do we begin to look at tariff effects on large importing country?
- we have to start on the right side with the world market
- Effects of tariff on Large Importing country
-
1. higher prices --> loss to CS
2. higher prices --> gain to domestic PS
3. tax revenue --> (tariff*Q import)
SAME AS SMALL IMPORTING COUNTRY - TOT for large importing country and tariff
- If the Price of import decreases, then TOT better
- Show change in price in both a small importing country and world market for a tariff
-
Ptd = Pft + tariff
tariff = Ptd - Pft -
Show the tariff effects on PS of small importing country -
C + D = gain in producer surplus
C = gain to producers who had already been in market
D = new producers entering market or existing producers producing more -
Show government revenue of tariff on small importing country -
Government Revenue = tariff*Q of imports -
Show ALL effects of tariff on small importing country -- PS, CS, revenue -
A+B+C+D= loss of CS
A=PS Gain
C=govt revenue (gain)
B+D = representation of loss to economy; net effect of tariff
B = production effect/distortion
D= consumption effect/distortion -
Show welfare, restricted imports and free trade imports -
World DWL = (1/2)*(reduction in imports)*(tariff rate) - Draw the graphs to show a large importing country, world market, and effects of tariff
-
Ptd = t + Pexport
Pexport = the export country price
Price of free trade determined by WORLD MARKET -
What are the gains/losses of the tariff? -
Consumer loses: A+B+C+D
Producer gains: A
Govt gains: C+E
After offsets, left w/ B, D, E -
What are the implications of the region "E" and welfare? -
"E" = measurement of the value of TOT improvement
If E > (B+D) then welfare increases
If E < (B+D) then welfare decreases - Show graphically the effects of tariffs on the WORLD MARKET when talking about large importing country
-
Note that the tariff is equal to Ptd-Pexport -
What does each part represent? -
C = part of tariff how much we import
E = TOT loss from exporters view; TOT gain to importing country - What is the reason for trade?
- Comparative advantage
- What are two implications of comparative advantage?
-
1. trade is motivated by differences amongst countries
2. trade involves exports of some goods in return for imports of totally different goods. - What is Interindustry trade?
-
trade that involves exports of some goods in return for imports of totally different good
(i.e. import corn, export cars. No mistake that the goods are different) - Import demand curve is derived from
- underlying ordinary demand curves
- Autarky
- situation of self-sufficiency; no trade
- Producer Surplus?
- return of the specialized input; (not)profit
- Horizontal Export Supply curve represents
- Infinitely elastic S curve
- Draw the three graphs of the US, World and Indonesian T-shirt market with free trade
-
-the US equilibrium price sets the price for the Import Demand curve in the world
-Pft is below autarky for the US but above autarky for Indonesia (the export country) -
Show the quantity of imports at free trade -
Note that Qft = imports for US and exports for Indonesia
ALL EQUAL -
(graph) show total CS with just a demand curve
What is the rltnsp between price and CS? -
If Price goes down, CS goes up
If Price goes up, CS goes down -
What does the height of the demand curve represent? -
Height of Demand Curve represents marginal consumer's maximum willingness to pay -
(Graph) Show CS with demand curve only when U.S. opens up to trade
Explain differentiation within CS -
Whole shaded in area is increase in CS
Square = Gain to consumers already in the market
Triangle = gain to expanded market/market entrants -
(Graph) Show producer surplus with Supply curve only
What is the rltnsp between price and PS? -
Supply curve is the lowest acceptable price to bring quantity into the market
When Price increases, PS increases
When Price decreases, PS decreases -
(Graph) Show change in producer surplus when open up to trade
Differentiation within PS -
Total shaded area equals loss of producer surplus
Square = loss to producers who remain in market
triangle = loss to producers forced to exit market - (Graph) Show change in CS and PS together for importing country and net gain from trade
-
Purple triangle area = net gain from trade (to the US) - (Graph) Show change in CS and PS for exporting country like Indonesia when open to free trade
-
Note that consumers lose, Producers gain
Pft ABOVE autarky - What is General Equlibrium Analysis?
- Looks for the equilibrium between all markets simultaneously (recognize links between markets)
- What is Partial Equilibrium analysis?
- ex. look at one market --> i.e. t-shirts
- 2 Assumptions for General Equilibrium Analysis
-
1. Assume 2 goods (Bread, Cheese)
2. 1 input (labor) - Ricardian model of trade (assumptions:)
-
1. 2 goods
2. 1 input/factor of production
(Others)
3. Perfect Competition
4. labor mobility between sectors
5. Assume 2 countries; labor cannot move between countries -
this stands for -
= amount of labor used to produce one unit of bread -
How do you find the total labor used to produce good B? (equation)
(Ricardian Model) -
Alb * Qb = total labor used to produce B
(Amt labor used to produce 1 unit * # units) -
How do you find the supply of labor?
(Ricardian Model) -
Alb*Qlb + Alc*Qc = L
(find the sum of total labor used to produce both goods) - Draw a Production Possibilities Frontier for a Ricardian Model Economy
-
Note that (L/alc) derived from original formula for total labor used to produce good c - What does the Ricardian Model say about the wage rate?
- It's the same in both sectors
- Why is the wage rate the same for both sectors? (Ricardian)
- since labor is mobile between sectors there is only one wage rate
- Price =
- cost per unit
-
Pb derived from (in terms of wage rate, etc)
(Ricardian) - Pb = Alb * w (amt labor required to produce one unit * wage rate)
-
Pb/Pc =
(Ricardian) - Alb/Alc
-
relative price =
(in rltnsp to PPF) - absolute value of the slope of PPF
- (Ricardian Model) Show the cycle between relative prices and Home, Foreign that lead to the situation where relative prices are the same for both countries
-
Note direction of arrows: Home has comparative advantage in bread, which is why bread is being exported from home to foreign and vice versa -
(Graph) Show changes when opened up to trade if the new equilibrium of relative price of bread to cheese is 3
RICARDIAN MODEL -
Note that we are looking at CONSUMPTION POSSIBILITIES WITH TRADE (not production) -
What will Home end up selling now? -
HOME will sell ONLY bread because they will receive 3 cheese for every 1 Bread
end up SPECIALIZING in bread - RICARDIAN model of comp adv: How do we justify that everyone benefits from trade?
- since everyone is alike/the same: when one worker benefits, everyone benefits
- RICARDIAN: what role does comp. adv. have in trade?
- it determines WHAT we trade
- How is "absolute advantage" reflected?
- reflected in the WAGE RATE: HOME workers have higher wages (labor is more productive) --> higher wage but also higher productivity
- What are the different names of the H-O model?
-
Heckscher-Ohlin Model (H-O)
Heckscher-Ohlin-Samuelson (H-O-S)
2x2x2 model
Factor Endowment Model
Factor Proportions Model - Assumptions of H-O model
-
1. 2 goods (x, y)
2. 2 Factors of production (K&L)
3. 2 countries (Home, Foreign)
4. Perfect Competition
5. Factors can move btwn sectors
6. Both countries have same technology
**7. Assume that preferences are the same in all countries - Weaknesses of Ricardian model of comparative advantage
-
1. always lead to specialization
2. leads to over-specialization: (1 country, 1 good)
3. Everyone benefits from trade (there is no harm)
4. everyone is alike - Differences between assumptions of Ricardian and H-O model
-
1. 2 factors of production (in Ricardian only 1 --> Labor)
2. H-O: Both countries have same technology; Ricardian: diff countries have diff technologies as shown by diff. labor productivity - What does the PPF for the HO model look like?
-
"concave toward the origin"
bends toward origin
Increasing opportunity cost of producing good x (the more x we produce, the more costly the opp cost is) - Properties of concaved PPF in rltnsp with opp. cost
- inreasing marginal cost/opportunity cost of producing good goes both ways (x, y)
- Law of Diminishing Marginal Returns
- Each extra unit of variable input adds less to output than the unit before it.
- where do relatively capital-intensive/labor-intensive sectors come from?
- using inputs (K, L) in different proportions
- Community Indifference Curve -
- all combinations of x & y that leave economy at same level of satisfaction/welfare
- Properties of Indifference Curves
-
downward sloping
convex towards origin
do not intersect - State the Heckscher-Ohlin Theorem:
- The capital abundant countries will have a comparative advantage in the capital intensive good. (The Labor abundant country has a comparative advantage in Labor Intensive good)
- Factor-Price Equalization Theorem
- free trade leads to the same real wage rate for labor (of a given type or skill) in different countries. Separately, it also says that free trade leads to the same real rental rate (for a given type of land) in different countries
- Stolper-Samuelson Theorem
- an increase in the price of the capital-intensive good relative to the price of the labor-intensive good will cause real income of capital owners to increase and real wage to fall. (LR)
- Does the Stolper-Samuelson Theorem address short run or long run changes?
- Long-run result: In the LR, the affect of trade on real income depends on WHO you are, not WHERE you are (also doesn't matter where you spend your income)
- What are the 4 theorems we learned?
-
1. Ricardian Model of Comparative Advantage
2. Heckscher-Ohlin Theorem
3. Factor-Price Equalization Theorem
4. Stolper-Samuelson Theorem - How does real income increase?
-
1. prices stay same, wage goes up
2. wage stays same, price goes down - Is the H-O Theorem talking about LR or SR?
- H-O theorem predicts LONG RUN results since Capital and Labor are able to move between sectors
- In the H-O Theorem, what kinds of people are there? Who are they?
-
2 kinds of people:
1. workers - earn wages
2. capital-owners/land-owners - earn rental income - Short run model: Specific Factors Model
- In the short run factors are mainly tied to their initial industries, because there is limited mobility between industry. decreasing-price industry initially lose earnings (both K and L) and rising-price industry initially tend to gain earnings
- In the Short Run, what does the impact of trade on real income depend on?
-
WHERE you work --> graphically, SR is where we didn't move on PPF
(so if you work in a sector subject to income-competition, then the income-competition will drive down your real income) - In the Short Run, what is the impact of trade on factors employed in import competing sectors?
- Factors employed in import competing sectors will be HARMED by an expansion of trade [i.e. lower real income]
- In the Short Run, what is the impact of trade on factors employed in export-oriented sectors
- they BENEFIT from an expansion of trade [trade increases real income]
- what does the affect of trade on real income depend on in the long run?
- In the LR, the affect of trade on real income depends on WHO you are, not WHERE you are
- Factor-Price Equalization Theorem (in class)
- 2 countries freely trade, no barriars/no costs; THEN the wage rate for labor will be the same for all countries and the return to capital will be the same for all countries
- What is intraindustry trade?
-
imports and exports of the same products
comparative advantage cannot explain intraindustry trade - What is the Grubel-Lloyd index of intraindustry trade?
-
this is for one industry.
for the whole economy (group of industry) just sum up - Looking at 1 industry, what would a GLI of 0 mean?
- It means that there is no intraindustry trade; only interindustry trade
- Looking at 1 industry, what would a GLI of 1 mean?
- This means all trade in this industry is characterized as intraindustry trade
- What is economies of scale?
- more you produce(more output) then the average cost to produce decreases
- What does Economies of Scale and Product Differentation lead to?
-
1. limited # locations of firms
2. diff. preferences mean that both import and export cars to fit consumers' prefs even though cost to produce are similar - Model of Monopolistic Competition
-
1. easy entry and exit from industry
2. because product is differentiated, each FIRM faces downward-sloping demand curve (they are not a price-taker) - In the Model of Monopolistic Competition, how sensitive is demand to price?
-
More variety of goods, the less ability to raise price w/o losing lots of customers
(assume that more varieties lead to greater competition - What happens to the avg. cost to produce as more varieties are available?
-
1. assume total market size is fixed
2. If there are n firms, each sells to 1/n of market (all firms same size)
More you sell, less AC; lsess you sell, higher AC
AC INCREASES AS # FIRMS IN MARKET INCREASE - CC curve =
- Average cost to produce as a function of the number of firms in the market
- PP curve =
- profit-maximizing price curve
- What happens when you introduce TRADE into the Model of Monopolistic Competition?
-
Market size increases by allowing trade.
CC curve shifts to the right; AC decreases - Effects of increase in market size (total demand)
-
1. AC falls for firms
2. # firms increase
3. P, AC decrease - Who benefits from trade in monopolistic competition?
-
Consumers: 1.) more choice 2.) lower price
Producers: Economic profits still 0, but in equilibrium each firm gets bigger and lower AC - Model of Global Oligopoly
-
Small # firms, economic profit is possible in equilibrium
location matters for welfare (i.e. Boeing wants all econ. profits because we are Americans) - Economies of Scale EXTERNAL to the Firm
-
doesn't matter how big the firm is, it matters how big the industry is
(i.e. computer chips, film-making)
*combine with proximity --> agglomeration economies
again, the location is random - How can immiserizing growth occur?
- Immiserizing growth can occur if growth in the country leads the country to want to trade more, and the country's terms of trade deteriorate by a large amount. If a country's trade has almost no impact on world prices, then its growth will have almost no impact on its terms of trade, and immiserizing growth is very unlikely.
- socially optimal tariff
- tariff rate at which social welfare is maximized; above that under both autarky and free trade
- Prohibitive tariff
- tariff rate at which price is so high that it prohibits/eliminates trade: welfare is same as in autarky
- Problems with the argument FOR a tariff
-
1. we may not be a large country
2. Other countries raise tariff also, (tariff wars) volume of trade decreases - Marginal External Benefit (MEB)
- the additional benefits bestowed upon the economy for producing one extra good
- infant industry argument
- we don't have the resources to compete in larger market
- 3 types of "unfair" trade practices
-
1. unfair trade practices implemented by firms themselves
2. implemented by governments and applied to perfectly competitive industries
3. implemented by govts and applied to oligopoly - Define "Dumping"
- a firm that sells its product in a foreign market at an "unfairly low " price (lower than firm's domestic price, lower than AC)
- Define an "unfairly low" price
-
1. a price lower than the price that the firm charges its own country's consumers ("international price discrimination")
2. when a firm sells its product in a foreign market at a price lower than its "full" average cost of production - 2 main motivations for dumping
-
1. Predatory Dumping
2. Persistent Dumping - Predatory Dumping
- a firm will take artificially low price in order to drive competitors out of the market
- Persistent Dumping
-
international price discrimination
it is the profit maximizing thing to do
demand elasticity different so charge diff. prices --> that's why its profit maximizing - Point at which firms maximize profit:
- when Mariginal Revenue = Marginal Cost
- Marginal Revenue is always
- with a slope twice as steep as demand curve
- what does a flat MC curve mean?
- that the extra cost of producing is ALWAYS the same
- If MC > MR then
- sell less
- if MC < MR then
- sell more
- Two-Part Test against dumping
-
1. prove that dumping actually occuring
2. show that somehow hurting your industry - U.S. Commerce Dept's role in two-part test
-
Finding of Fact
(almost always answers "yes" dumping occuring) - U.S. International Trade Commission (USITC) role in two-part test
- look to see if domestic industry is being injured by dumping (losing profit, losing employment, losing market share)
- What are the two government depts involved in the two-part test for dumping?
-
1. U.S. Commerce Dept (fact)
2. U.S. International Trade Commission (USITC) - Who authorizes the "Anti-Dumping Duty"
- US Commerce Department
- Effects of Anti-Dumping Duty (as long as not predatory behavior)
-
reduces world volume of trade
hurts U.S. consumers - What is an export subsidy?
-
given by govt to firms
payment for the actual activity of selling your product to another country - What is consumption distortion?
- higher prices artificially reduce demand
- what is production distortion?
- higher prices artificially stimulates production more than what we have a comparative advantage in
- Net effect of export subsidy on small country (perf. comp)
- welfare loss
- Net effect of export subsidy for large country
-
world price driven down due to increased exports
deterioration in TOT for exporter since price decreases
DETERIORATION in export country's TOT; and net loss is even BIGGER than it would be for a small country - Most Favored National Principle (MFN)
- Principle of non-discrimination (countries are prohibited against discriminating each other if both members of GATT/WTO)
- 2 exceptions to MFN
-
1. industrialized developed countries are allowed to give preferential/favorable treatment to developing countries ("Generalized System of Preferences" GSP)
2. Preferential Trading Arrangements (PTA) --. Trading blocs; Free trade areas and customs Unions - "Generalized System of Preferences" (GSP)
- industrialized developed countries are allowed to give preferential/favorable treatment to developing countries
- 2 types of Preferential Trading Arrangements (PTA)
-
1. free trade areas (FTA)
2. customs unions (CUs) - Difference between FTA and CU
-
FTA: Each member has independent policy towards non-members (ex. NAFTA)
CU: all members share same policy toward non-members (EU) - Common Market
-
CU + Free mobility of productive factors
ex. EU - Full economic union
-
Common Market + single monetary/fiscal policy, social welfare programs
ex. U.S. - "Trade Deflection"
- Process of trying to circumvent high tariff by going through a low-tariff FTA country
- Trade Creation
- creation of PTA stimulates more trade from member countries
- Trade Diversion
- creation of PTA changes trade pattern...substituting member country imports for non-member country
- Conditions for when trade creation is larger than trade diversion
-
small comp. adv between suppliers
large tariff