Income
The amount of money an individual receives over a set period of time, e.g. per week or per year.
Wealth
The monetary value of assets held – assets can include property, land, money and shares.
Factors affecting the distribution of income
Factors affecting the distribution of wealth
What is the Lorenz curve used for?
To represent the distribution of income graphically.
Explanation of the Lorenz Curve
Along the horizontal axis is the percentage of the population, and up the vertical axis is the total percentage of income.
The diagonal line represents complete equality – e.g. 10% of the population have 10% of the income, 40% of the 40% of the income, and so on.
The further the Lorenz curve is away from the diagonal, the greater the inequality in the country.
What does this Lorenz curve show?
Gini coefficient
A measure of inequality - found from the Lorenz curve.
What does a Gini Coefficient of 0 represent?
Complete equality – i.e. everybody earns the same income.
What does a Gini Coefficient of 1 represent?
Complete inequality – i.e. one person earns all the income in the country.
Equality
Where everyone is treated completely equally.
Equity
This relates to fairness - people have different circumstances, so it is more about people getting what is needed.
Difference between equity and equality?
Equality is positive (it’s objective and deals with facts), whereas equity is normative (it’s subjective and based on opinion).
Types of equity
Positive impacts of the unequal distribution of wealth
1) Lower earners may feel that if they work harder they will be able to achieve a higher income. This may increase overall productivity.
2) It can also be an incentive for people to start their own business, as a way of increasing their wealth.
3) Some economists argue that higher incomes for richer people may encourage them to invest more in businesses. This will create jobs, meaning some of the wealth makes its way to poorer people – this is known as the trickle-down effect. It can reduce absolute poverty.
Negative impacts of the unequal distribution of wealth
1) Absolute and relative poverty can remain high.
2) Inequality restricts economic growth and wastes people’s talents, because the poorest people don’t have the funds to start businesses.
3) As incomes rise even higher, spending on imports tends to increase, so this money leaves the circular flow.
4) There are also social impacts – high inequality is correlated with higher levels of poor health and crime, and lower levels of well-being.
Capitalism and inequality
Under capitalism, inequality is inevitable
Difference between a flow and stock concept
A flow is a quantity that occurs over a period of time and is measured as a rate or change. An example is income.
A stock is a quantity that exists at a particular moment and can be measured at that point in time.
An example is wealth.
Example difference between wealth and income
Income is the flow of all money received and wealth is the value of all assets.