Macro 13 - Multiplier Flashcards
Define the multiplier effect
Gains in AD and output are greater than the spending that caused it
Define the negative multiplier effect
Fall in AD and output is greater than the fall in spending that caused it
Explain the multiplier
Injections of new demand for goods into the circular flow of income with stimulate further rounds of spending. This has a bigger final impact on output and employment
What factors affect the multiplier?
The marginal propensity to withdraw (MPW)
What is the MPW - Marginal propensity to withdraw?
Proportion of the change of income that leaves the circular flow of income
In the form of:
Savings, tax and imports
What is the formula for the MPW?
MPS + MPT + MPM
When does the multiplier have a big impact on the economy?
When the marginal propensity to withdraw is low.
What is the formulas for the multiplier?
1/1-MPC and 1/MPW
If the MPC is 0.8 then what is the multiplier?
5
(if there is an injection of 50 mil, this would generate a revenue of 50x5, 250 million)
If for every 100 pounds of income:
10% is saved
20% is taxed
20% is spent on imports
What is the MPC?
MPW = 0.5 and the MPC is 0.5
Define the accelerator
Increase in the rate of growth in GDP leads to increased capital investment
Why does the accelerator occur?
Firms become confident to invest (high animal spirits)
When will the accelerator be low?
During a recession (low confidence)