00:01
Now, to calculate the initial decline in consumer spending in response to the expiration of the payroll tax cut, we can use the concept of marginal propensity to consume, that is mpc.
00:20
The mpc represents the proportion of additional income that individuals choose to spend on consumption.
00:28
So, here first, the initial decline in consumer spending is, if the marginal propensity to consume is 0 .9, it means that out of every additional dollars, additional dollar of income, individuals spend 90 cents on consumption.
01:13
Therefore, the initial decline in consumer spending can be calculated by multiplying the change in income and the marginal propensity to consume.
01:57
So, that is change in income is 100 dollars multiplied by mpc is 0 .9, so that will be 90 dollars.
02:06
So, this is the first point...