Monday, May 16, 2016

ABSOLUTE ADVANTAGE

-Individual: exists when a person can produce more of a certain good/service than someone else in the same amount of time or can produce a good using the least amount of resources.
-National: exists when a country can produce more of a good/service than another country in a given time.

COMPARATIVE ADVANTAGE

-A person has a comparative advantage in the production of a product when it can produce at a lower domestic opportunity cost than a trading partner.

EXAMPLES OF OUTPUT

Tons/acres
Miles/gallon
Apples/tree
Televisions produced per hour

EXAMPLES OF INPUT

Number of hours to do a job.
Number of acres to feed a horse
Number of gallons of paint to paint a house

SPECIALIZATION AND TRADE

-Gains from trade are based on comparative advantage not absolute advantage.



Mechanisms of foreign exchange 

Foreign exchange 

-The buying and selling of currency 
-Any transaction that occurs in the balance of payment necessitates foreign exchange.
-The exchange rate is determined in the foreign currency market.

Changes in exchange rate

Exchange rates are a function of the supply and demand for currency.
-An increase in the supply of a currency will decrease the exchange rate of a currency.
-A decrease in supply of a currency will increase the exchange rate.
-An increase in demand of a currency will increase the exchange rate of a currency.
-A decrease in demand of a currency will decrease the exchange rate of a currency.

Appreciation and Depreciation 

-Appreciation of a currency occurs when the exchange rate of that currency increases.
-Depreciation of a currency occurs when the exchange rate of that currency decreases.

Exchange rate determinants 

Consumer tastes 
Relative income 
Relative price level
Speculation 

Exports and imports 

-The exchange rate is a determinant of both exports and imports.
-Appreciation of the dollar causes American goods to be relatively cheaper thus reducing exports and increasing imports.
-Depreciation of the dollar causes American goods to be relatively cheaper and foreign goods to be more expensive thus increasing exports and reducing imports.


BALANCE OF PAYMENTS
-Measure of money inflows and outflows between the U.S. and the rest of the world.
 *Inflows are referred to as CREDITS.
 *Outflows are referred to as DEBITS.
-The balance of payments is divided into 3 accounts:
 *Current account.
 *Capital/financial account.
 *Official reserves account.
CURRENT ACCOUNT
Balance of trade or net exports
-Exports of goods and services – import of goods and services.
-Exports create a debit to the balance of payments.
Net foreign income
-Income earned by U.S. owned by foreign assets – income paid to foreign held U.S. assets.
Net transfers
-Foreign aid -> a debit to the current account.
CAPITAL/FINANCIAL ACCOUNT
-The balance of capital ownership.
-Includes the purchase of both real and financial assets.
-Direct investment in the U.S. is a credit to the capital account.
-Purchase of foreign financial assets represents a debit to the capital account.
-Purchase of domestic financial assets by foreigners represents a credit to the capital account.
RELATIONSHIP BETWEEN CURRENT AND CAPITAL ACCOUNT
-The current account and the capital account should zero each other out.
-That is if the current account has a negative balance (deficit), then the capital account should have a positive balance (surplus).
OFFICIAL RESERVES
-The foreign currency holding of the U.S. Federal Reserve System.
-When there is a balance of payments surplus, the FED accumulates foreign currency and debits the balance of payment.
-When there is a balance of payment deficit, the FED depletes its reserves of foreign currency and credits the balance of payments.
-The official reserves zeros out the balance of payment.
ACTIVE VS PASSIVE OFFICIAL RESERVES
-The U.S. is passive in its use of official reserves. It does not seek to manipulate the dollar exchange rate.


Sunday, May 15, 2016

THE PHILLIPS CURVE

Original SR Phillips Curve

Inflation and unemployment
Inverse relationship.
Inflation
It increases as the economy expands.
Recession
Unemployment increases as the economy slows down.
Along the curve
Cyclical change in the GDP.
Stagflation

Late 1970s to 1981
Increasing inflation and unemployment at the same time.
Data?

A New Philips Approach

New range?
The SRPC can move inward and outward.
Cost push inflation
More stress on resources, wages and input costs.
Supply shocks
Rapid loss of resources or rapid increase in resource cost.
SRPC curves moves
Outward during shocks.
SRPC moves back
Inward as the society increases productivity or regains resource.
Long Run Philips Curve

Inflation
Society adjusts for cost/wage increases with new prices.
LRPC is?
The efficient PPF.
Natural rate of unemployment
Becomes the equivalent of full employment rate.
Phillips and AD/AS curves

Change points on SRPC
If AD changes, you move the points on the curve.
Move the SRPC
You shift the curve of the SRPC.

THE LONG RUN PHILLIPS CURVE

-Because the long run Phillips curve exists at a natural rate of unemployment (Un), structural changes in the economy that affects Un will cause the LRPC to shift.
-Increases in Un will shift LRPC ->.
-Decreases in Un will shift LRPC <- (Low inflation -> high unemployment).
Relating Phillips curve to AS/AD
-Changes in the AS/AD model can also be seen in the Philips curve.

Misery index
-a combination of inflation and unemployment in any given year. Single digit misery is good.
Supply shocks
-this is the rapid and significant increase in resource cost.
Disinflation
-this is reduction in inflation from year to year or over time. It is found in the LRPC.
Deflation
-general decline in price.


SUPPLY SIDE ECONOMY

-changes in AS and not AD are the main active force in determining the level of inflation, unemployment rates and economy growth.
Supply side economists
-supports policies that promote GDP growth by arguing that high marginal tax rates along with the current system of transfer payment such as unemployment compensation or welfare programs provide disincentive to work , invest, innovate and undertake entrepreneurial ventures.

INCENTIVES TO SAVE AND INVEST

1)      High marginal taxes reduce the revenues for savings and investments.
2)      Consumption might increase but investments depend upon savings.
3)      Lower marginal tax rates encourage savings and investments.


LAFFER CURVE

-theoretical relationship between tax rates and tax revenues. As tax rates increase from zero, tax revenues increase from zero to some maximum level and then decline.

CRITICISM TO THE LAFFER CURVE

1)      Evidence suggests that the impact of tax rates on incentives to work, save and invest is small.
2)      Tax cuts increase demand which can fuel inflation and demand may exceed supply.