National and International Economy Flashcards
What are the three injections
Investment
Government spending
Exports
What are the three withdrawals
Savings
Taxation
Imports
Define marginal propensity to consume
The increase in consumption following an increase in income. Specifically, how much consumption increases per £ of additional income.
How do you calculate the multiplier
Multiplier = 1/(1 - mpc)
Multiplier = 1 / (mps + mpt + mpm)
How do you use the multiplier
Multiplier x injection = total increase in GDP
Define the multiplier effect
When an injection into the circular flow leads to a greater proportional increase in AD
Define the accelerator effect
An economic postulation whereby investment expenditure increases when aggregate demand/national income increases
Explain the accelerator effect
1) Increase in consumer demand
2) Firms get close to full capacity
3) Firms invest to meet rising demand and increase capacity
Define an economic shock
An unexpected or unpredictable event that effects the economy
What two ways can shocks be categorised
1) demand-side or supply-side
2) positive or negative
What are world demand shocks
Shocks associated with a rise or a decline in spending and confidence abroad
What are world supply/price shocks
Shocks that affect the global supply and the price of goods and services
Give 2 supply side shocks that have resulted from COVID-19
1) fall in productivity due to disrupted economic supply chains, temporary business closures and growth in business bankruptcies
2) a fall in business investment due to a loss of confidence
Give a demand side shocks as a result of COVID-19
1) Sharp fall in consumer demand due to shop closures, leading to a rise in unemployment and a rise in redundancies
Give 3 points of evaluation when analysing economic shocks
1) the size of the shock - a slowdown is not the same as a recession
2) the scale of the shock- regional vs global
3) what are the multiplier/accelerator effects?
4) Can economic policy respond - is the response likely to be effective?
What can demand and supply side shocks cause
Cyclical instability - leading to booms and slumps in the economy
What is another cause of cyclical instability
Confidence
1) when the economy shows signs of instability, consumers and firms become risk averse
2) may lead to individuals saving a larger % of their income
3) larger saving rate can cause a larger fall in output and thus more instability
(Made worse by herding habits)