Interdependence and the Gains from Trade

Comprehensive question-and-answer practice flashcards covering textbook Chapter 3 on Interdependence, Gains from Trade, Absolute Advantage, Comparative Advantage, and International Trade.

What is interdependence as defined in the lecture?

Interdependence is when people rely on one another to provide goods and services.

Why do people produce goods and services for others to trade rather than out of generosity?

People produce goods and services because they get something in return, allowing everyone to trade and acquire items they may not produce as efficiently themselves.

In the modern economy parable, what are the roles and goods produced by Ruby and Frank?

Ruby is a cattle rancher who produces meat, and Frank is a potato farmer who produces potatoes.

What are Frank's production outputs if he works all $8\,\text{hours}$ on a single good?

If Frank works all $8\,\text{hours}$ on potatoes, he produces $32\,\text{oz.}$ of potatoes and $0\,\text{oz.}$ of meat. If he works all $8\,\text{hours}$ on meat, he produces $8\,\text{oz.}$ of meat and $0\,\text{oz.}$ of potatoes.

Why is Frank's Production Possibilities Frontier (PPF) a straight line?

Frank's PPF is a straight line because he can switch between producing meat and potatoes at a constant rate, where moving $1\,\text{hour}$ from meat to potatoes always decreases meat by $1\,\text{oz.}$ and increases potatoes by $4\,\text{oz.}$

What are Ruby's production outputs if she spends $4\,\text{hours}$ on each good?

Ruby produces $24\,\text{oz.}$ of potatoes and $12\,\text{oz.}$ of meat.

Under self-sufficiency, what is the relationship between a producer's production possibilities frontier and their consumption possibilities frontier?

Their production possibilities frontier is also their consumption possibilities frontier because each person consumes exactly what they produce.

What trade deal does Ruby propose to Frank?

Ruby proposes that Frank spend all $8\,\text{hours}$ growing potatoes to produce $32\,\text{oz.}$ of potatoes, give Ruby $15\,\text{oz.}$ of potatoes, and receive $5\,\text{oz.}$ of meat from Ruby in return.

What amounts of potatoes and meat does Frank consume after accepting Ruby's trade proposal?

Frank consumes $17\,\text{oz.}$ of potatoes ($32 - 15$) and $5\,\text{oz.}$ of meat.

How does Ruby divide her $8\,\text{hours}$ of work after agreeing to the trade proposal?

Ruby spends $6\,\text{hours}$ raising cattle and $2\,\text{hours}$ growing potatoes, producing $18\,\text{oz.}$ of meat and $12\,\text{oz.}$ of potatoes.

What amounts of meat and potatoes does Ruby consume after trading with Frank?

Ruby consumes $13\,\text{oz.}$ of meat ($18 - 5$) and $27\,\text{oz.}$ of potatoes ($12 + 15$).

How does total production of potatoes and meat in the economy change after specialization and trade?

Total production of potatoes increases from $40\,\text{oz.}$ to $44\,\text{oz.}$, and total production of meat increases from $16\,\text{oz.}$ to $18\,\text{oz.}$

What is absolute advantage?

Absolute advantage is the ability to produce a good using fewer inputs (such as time) than another producer.

Who holds the absolute advantage in producing meat and potatoes, and why?

Ruby holds the absolute advantage in both goods because she needs less time than Frank to produce each good: $20\,\text{minutes}$ vs. $60\,\text{minutes}$ for $1\,\text{oz.}$ of meat, and $10\,\text{minutes}$ vs. $15\,\text{minutes}$ for $1\,\text{oz.}$ of potatoes.

What is comparative advantage?

Comparative advantage is the ability to produce a good at a lower opportunity cost than another producer.

What is Frank's opportunity cost of producing $1\,\text{oz.}$ of potatoes?

Frank's opportunity cost of producing $1\,\text{oz.}$ of potatoes is $\frac{1}{4}\,\text{oz.}$ of meat.

What is Ruby's opportunity cost of producing $1\,\text{oz.}$ of potatoes?

Ruby's opportunity cost of producing $1\,\text{oz.}$ of potatoes is $\frac{1}{2}\,\text{oz.}$ of meat.

What is the opportunity cost of producing $1\,\text{oz.}$ of meat for Frank and for Ruby?

Frank's opportunity cost of $1\,\text{oz.}$ of meat is $4\,\text{oz.}$ of potatoes, while Ruby's opportunity cost of $1\,\text{oz.}$ of meat is $2\,\text{oz.}$ of potatoes.

Who has the comparative advantage in potatoes and who has it in meat?

Frank has the comparative advantage in potatoes because he gives up less meat ($\frac{1}{4}\,\text{oz.}$ vs. Ruby's $\frac{1}{2}\,\text{oz.}$), and Ruby has the comparative advantage in meat because she gives up fewer potatoes ($2\,\text{oz.}$ vs. Frank's $4\,\text{oz.}$).

Can a single person have a comparative advantage in both goods?

No, because comparative advantage is based on opportunity cost; if someone has a lower opportunity cost in one good, they must have a higher opportunity cost in the other good.

What general rule determines whether both parties will gain from a trade price?

For both parties to gain from trade, the price at which they trade must lie between their respective opportunity costs.

Why does a trade price of $3\,\text{oz.}$ of potatoes for $1\,\text{oz.}$ of meat benefit both Frank and Ruby?

Because $3\,\text{oz.}$ of potatoes lies between Ruby's opportunity cost of $2\,\text{oz.}$ of potatoes and Frank's opportunity cost of $4\,\text{oz.}$ of potatoes ($2 < 3 < 4$).

In the example of CoCo Gauff and Hari, who has the absolute advantage and who has the comparative advantage in mowing the lawn?

CoCo Gauff has the absolute advantage because she mows the lawn faster ($2\,\text{hours}$ vs. Hari's $4\,\text{hours}$), but Hari has the comparative advantage because his opportunity cost is $\$60$ (working at McDonald's) compared to Gauff's $\$50,000$ (filming a commercial).

Under what price condition do both CoCo Gauff and Hari benefit from trading for lawn mowing?

Both benefit as long as CoCo Gauff pays Hari more than $\$60$ and less than $\$50,000$ to mow the lawn.

In the United States vs. Japan trade example, what are the worker output rates for food and cars?

One worker from either country can produce $1\,\text{car}$ per month. A United States worker can produce $2\,\text{tons}$ of food per month, while a Japanese worker can produce $1\,\text{ton}$ of food per month.

Which country has the comparative advantage in cars and which in food?

Japan has the comparative advantage in cars because it gives up $1\,\text{ton}$ of food per car compared to the US giving up $2\,\text{tons}$. The United States has the comparative advantage in food because it gives up $\frac{1}{2}\,\text{car}$ per ton of food compared to Japan giving up $1\,\text{car}$.

Why can international trade make some individuals worse off even if it makes the country as a whole better off?

Because trade affects individuals in different ways; for example, an American farmer benefits when the US exports more food, but an American autoworker may be worse off because the US imports more cars.