Econ 202 Finale Flashcards
what does the AD/AS model allow economists to study?
fluctuations in inflation, unemployment, and real GDP over the business cycle
what is quantity of real GDP demanded?
the total amount of final goods and services produced inside the US that people, businesses, the government, and foreigners plan to buy
What is the formula for Quantity of Real GDP demanded?
real personal consumption expenditure + planned real gross private domestic investment + real government expenditure on goods and services + real net exports of goods and services
when do real GDP and quantity of real GDP demanded differ?
if planned real Gross priv dom investment differs from actual real gross priv dom investment
Why would planned Real Gross Private Domestic Investment be different from
actual Real Gross Private Domestic Investment?
depends on levels of inventories
what happens to planned investment if less goods are sold than expected?
inventories increase above planned levels
planned investment < actual investment
what happens to planned investment if more goods are sold than expected?
inventories decrease below planned levels
planned investment > actual investment
what is consumption influenced by? what makes it lower?
- higher real interest rates
- lower current after tax disposable income
- lower expected future income
- lower real wealth
what is after tax disposable income?
income - taxes + transfer payments
what lowers disposable income?
higher taxes and lower transfer payments
what factors lower planned
investment?
- higher real interest rates
- lower expected future profit from current capital goods projects
what is the aggregate demand curve?
the relationship between the aggregate price level and the quantity of real GDP demanded
aka AD curve
why does the aggregate demand curve slope downward?
increases in the price level lead to a reduction in the quantity of real GDP demanded
what are categories of reason for why the AD curve slopes downwards?
wealth effects and substitutions effects
what is a wealth effect?
an increase in the price level from P0-> P1
- leads to a decrease in real wealth
- leads to an increase in saving and reduction in consumption, and thus the quantity of real GDP demanded
what is substitution effect #1?
increase in P0->P1
- leads to a decrease in amount of real money
- which leads to a decrease in the price of bonds, and an increase in the nominal interest rate
- real interest rate increases
- which leads to lower consumption and lower planned investment
what is substitution effect #2?
increase in price level from P0-> P1
-prices in other countries remain same, US goods more expensive
- reduces US exports and increases imports, reduces quantity of real GDP demanded
what 4 factors shift the AD curve?
1) fiscal policy
2) monetary policy
3) expectations about the future
4) the world economy
what is fiscal policy (in this context)?
the govs attempt to influence the ec by setting and changing taxes, making transfer payments, and purchasing g/s
- changes in taxes and transfer payments influence after tax disposable income, which affects consumption
- changes in gov spending directly influences the quantity of real GDP demanded
what is monetary policy in this context?
changes in the quantity of the nominal money supply in the economy by the Fed which can influence the real interest rate in the short run
- changes in real interest rate affect consumption and planned investment
what does expectations about the future mean in this context?
- expectations about future income affect consumption
- expectations about future profit influence business decisions regarding planned investment
what does the world economy mean in this context?
changes in foreign income influence demand for US exports
what happens to the AD curve when the quantity of real GDP demanded increases?
the AD curve will shift to the right
what happens to the AD curve when the quantity of real GDP demanded decreases?
AD curve shifts left