Macroeconomic theory Flashcards
(62 cards)
what is the circular flow of income? (simple) (4)
a basic model of the economy that shows:
- how households provide the 4 factors of production to firms
- firms make g&s out of the factors of production
-household receive factor incomes ( wages, rent, dividends)
- these incomes go towards consumer expenditure
who are the 3 economic agents?
-banks
- government
- abroad
- what is a withdrawal?
- give 3 examples
- ways that incomes leak out of the circular flow of income ( money leaves the economy )
- savings (s)
taxation (t)
imports (m)
- what are injections?
- give 3 examples
- money which goes into the economy outside of consumer expenditure
- investment (i)
government spending (g)
exports ( x )
how can we know if the economy is growing? (2)
- if injections are greater than leakages -there is more money entering the economy than leaving the economy
how can we know if the economy is shrinking?
- if withdrawals are greater than injections
- more money is leaving the economy than entering it
- so the economy will shrink
what is macroeconomic equilibrium?
- if injections and withdrawals are equal so there is a balance
what is GDP
- the measure of economic growth ( gross domestic product )
why do we use GDP
- to precisely measure economic growth
what are the 3 methods of measuring GDP?
- Output method - looking at the final value of all goods and services produced in an economy in a year
- Income method - Adding up all the factor incomes earned in an economy in a year
- total expenditure - C + I + G + ( X - M )
what can be said about the 3 methods of GDP
- they are equal
- output = income = expenditure
- the three are going to be equal to one another regardless of the method used
what is the multiplier effect?
the increase in final income arising from any new injection of spending
explain the multiplier effect
- any increase in spending by AD going up will create income for somebody else
- this will facilitate the spending by those people
- creating income for somebody else
- and so on
how do we calculate the multiplier?
(3)
- multiplier (k) = change in real GDP (y) / change in injections (j)
- 1/ 1- (marginal propensity to spend)
- 1/ (marginal propensity to withdraw)
what can determine the value of the multiplier? (3)
the marginal propensity to consume
- the bigger the mpc the bigger the multiplier
- the smaller the mpc the smaller the multiplier
what determines the marginal propensity to consume?
- a culture of saving in the economy
- if there’s lots of tax
- marginal propensity to spend on imports
these will reduce the multiplier value
- what is the accelerator effect?
- explain the accelerator effect
(4)
- changes in investment can be directly linked to changes in the rate of GDP growth
- -when the rate of gdp growth is increasing, firms are more willing to invest
- this is because they think that demand is going to be high in the future
- so now’s a good time to invest momey into capital
- slow down is opposite
- this is because they think that demand is going to be high in the future
what is aggregate demand (AD) ?
(2)
- the total demand for goods and services in the economy at a given price level for a given period
- AD = C + I + G + ( X - M )
why is the AD curve downward sloping?
(3)
- there is an inverse relationship between price level and real GDP
- wealth effect
- trade effect
- interest effect
- what is the wealth effect say?
-As the price level decreases, the purchasing power of income increases,
- so they’re more likely to spend money on g & s
-increasing the level of consumption
- what does the trade effect say?
As the price level decreases, exports
become more competitive and imports
become less competitive.
- this means there will be a greater demand for exports
-and the revenue from exports
increases extending AD
- what does the interest effect say
-As price level decreases, interest rates can be kept lower
- because most central banks will adopt interest rate policies to meet an inflation rate target,
-lower interest rates stimulates higher consumption and investment ( because cost of borrowing is lower )
-and reduces the value of the exchange rate boosting export performance
when does the AD curve shift?
When c, i, g, or (x-m) change independent of the price level
what percentage of AD does consumption account for?
66%