The Keynesian consumption function is a mathematical relationship that describes the relationship between a country's income (I) and its level of consumption (C...
The Keynesian consumption function is a mathematical relationship that describes the relationship between a country's income (I) and its level of consumption (C).
The consumption function expresses the idea that consumption is directly related to a country's income. It is represented mathematically as follows:
C = a + b(I - T),
where:
C represents consumption
a is a constant representing autonomous consumption
b is a parameter representing the elasticity of consumption
I is the country's income
T is the total income available to the country.
The constant a represents the minimum consumption level, regardless of income.
The parameter b represents the responsiveness of consumption to changes in income. A higher value of b means that consumption is more responsive to changes in income, meaning that people are more likely to spend their money when they have more money.
The total income available to the country, T, is calculated by adding the income of all factors of production to the household.
The consumption function shows that as income increases, consumption increases proportionally. This is because as income increases, people have more money to spend, which leads to an increase in consumption.
Additionally, the consumption function shows that consumption is inversely related to taxes. This is because as taxes increase, people have less money to spend, which leads to a decrease in consumption