ECON 202 Lecture Notes - Lecture 4: Comparative Advantage, Opportunity Cost, Workforce Productivity

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Countries trade with each other because they can benefit from their differences by reaching an arrangement in
which each does the things it does relatively well.
Second, is to reach economies of scale when each country produces only a limited range of goods and on a larger
scale
e.g. the opportunity costs of roses in terms of computers is the number of computers that could've been
produced with the resources used to produce roses
The difference in opportunity costs offers the possibility of a mutually beneficial rearrangement of world
production because different efficiencies of producing different things in each different countries.
Opportunity cost
The concept of comparative advantage
International trade produces this increase in world output is that it allows each country to specialize in producing
the goods in which it has a comparative advantage
e.g. U.S. has a comparative advantage at producing computers and Colombia at roses
in producing a good is the opportunity cost of producing that good in terms of other
goods is lower in that country than it's in other countries
Trade between two countries can benefit both countries if each country exports the goods in which it has a
comparative advantage
Thus we look at
Ricardian Model
-
international trade is solely due to international differences in the
productivity of labor.
But there's no central governance to determine which country should capitalize on their comparative advantage.
Imagine an economy called "Home" with only one factor of production
There are only two goods: wine and cheese
We are defining unit labor requirements as the inverse of productivity
-
the more cheese or wine a worker
can produce in an hour, the lower the unit labor requirement
The technology of Home's economy can be summarized by labor productivity in each industry, expressed in terms
of the
unit labor requirement
, the number of hours of labor required to produce a unit of cheese or a unit of
wine.
aLW and aLC are defined as the unit labor requirements in wine and cheese production
L = the economy's total resources (the total labor supply)
A one-factor economy
Limits lead to trade offs, illustrated by a
production possibility frontier,
which shows the maximum amount of
wine that can produced once the decision has been made to produce any given amount of cheese, and vice versa.
When there's only one factor of production, the graph is a straight line
If Qw is the economy's production of wine and Qc is cheese, then the labor used to produce wine is aLW*Qw and
aLC*Qc for cheese
Because the economy's total labour supply is L
If the economy devoted all its labour to cheese, as shown by the figure, it produces L/aLC unit of cheese
(1,000)
e.g. if L = 1,000 hours, takes 1hour of labor to produce a unit of cheese and 2 hours to produce a unit of wine
Production possibilities
The lower the number of computers given up to produce the roses the
better. We want the opportunity cost to be low = comparative
advantage.
Chapter 3
-
Labour productivity and comparative
advantage: The Ricardian Model
January 7, 2018 12:19 PM
ECON 231 Page 1
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Document Summary

Chapter 3 - labour productivity and comparative advantage: the ricardian model. Countries trade with each other because they can benefit from their differences by reaching an arrangement in which each does the things it does relatively well. Second, is to reach economies of scale when each country produces only a limited range of goods and on a larger scale. Opportunity cost e. g. the opportunity costs of roses in terms of computers is the number of computers that could"ve been produced with the resources used to produce roses. The difference in opportunity costs offers the possibility of a mutually beneficial rearrangement of world production because different efficiencies of producing different things in each different countries. The lower the number of computers given up to produce the roses the better. We want the opportunity cost to be low = comparative advantage. Imagine an economy called home with only one factor of production. There are only two goods: wine and cheese.

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