Aggregate Demand and Aggregate Supply Flashcards
Economic Activity fluctuates from year to year:
What happens in most years?
production of goods and services rises
FACT 1: Economic Fluctuations
Economic fluctuations are irregular and unpredictable
FACT 2:Economic Fluctuations
Most macroeconomic quantities fluctuate together
FACT 3: Economic Fluctuations
As output falls, unemployment rises
What part of real GDP fluctuates most over the course of the business cycle?
Investment
Recessions
periods of falling real incomes and rising unemployment
Depressions
severe recessions
very rare
Most economists use what to study fluctuations?
model of aggregate demand and aggregate supply
What is the model of aggregate demand and aggregate supply used to explain?
the short run
What are the two groups that the Classical Dichotomy splits into?
Real: quantities, relative prices
Nominal: Measured in terms of money
The neutrality of money
changes in the money supply affect nominal but not real variables
What do most economists believe
That eh classical theory describes the world in the long run, but not the short run
A shift in the Supply curve to the left
Stagflation: Shows recession: but the prices went up, therefore inflation went up
The worst kind of recession
A shift in the Demand Curve to the left
Shows recession
An economic boom is shown by:
A shift to the right in both or either Supply and or Demand
What does the AD curve show?
the quantity of all g& s demanded in the economy at any given price level
The wealth effect (P and C)
Suppose P rises:
The dollars people hold buy fewer g&s (decrease value of money)
people feel poorer: C falls( spending falls)
The Interest-Rate Effect (P and I)
Suppose P rises:
Buying g&s requires more dollars
to get these dollars people sell bonds or other assets
This drives up interest rates
“I” falls
What happens to NX with an increase in P
increases demand for U.S dollars by foreigners, appreciates the dollar and reduces NX
An increase in P reduces the quantity of G&S demanded because
The wealth effect (C falls) The interest rate effect (I falls) exchange rate effect (NX falls)
Why the AD curve might shift
Any event that changes
C, I, G, or NX
EXCPET a change in P
Changes in C
- Stock Market boom/crash
- Preferences: such as consumption/ saving tradeoff
- Tax hikes/ cuts
Changes in I
- Firms buy new computers, equipment, factories
- Expectations, optimism/pessimism • Interest rates, monetary policy
- Investment Tax Credit or other tax incentives.