Poverty and inequality

Welcome to Poverty and Inequality!

In this chapter, we are going to explore one of the most important goals for any government: Greater Income Equality. We will look at why some people have more than others, how we measure these gaps, and what happens when a country grows but leaves some people behind. Don't worry if these terms sound big—we'll break them down piece by piece!

1. Income vs. Wealth: What’s the Difference?

Before we talk about poverty, we need to make sure we don't mix up Income and Wealth. They are related, but they aren't the same thing!

• Income: This is a flow of money. It is the money you receive over a period of time (like a weekly wage, monthly salary, or interest from a bank account).
• Wealth: This is a stock of assets. It is the value of everything you own at a specific moment in time (like your house, your car, or the money sitting in your savings account).

Analogy: The Bathtub
Imagine a bathtub. The water flowing from the tap is Income. The water already sitting in the tub is Wealth. Even if you turn off the tap (zero income), you might still have a full tub of water (lots of wealth)!

Quick Review:

Income = Money coming in (Flow)
Wealth = Things you own (Stock)

2. Understanding Poverty

In Economics, we generally look at two types of poverty. It’s not just about "having no money"; it’s about how much you have compared to what you need to survive or compared to others.

Absolute Poverty

Absolute poverty occurs when a person’s income is not enough to buy the basic necessities for survival. We are talking about the bare essentials: clean water, food, basic shelter, and clothing.

Relative Poverty

Relative poverty is different. This happens when a person is poor compared to the others in their society. For example, in a very rich country, someone might have a house and a phone but still be in relative poverty because their income is much lower than the "average" person in that country.

Did you know?
Many governments define relative poverty as living on less than 60% of the median income of the country.

Key Takeaway: Absolute poverty is about survival; Relative poverty is about comparison.

3. Measuring Inequality: The Lorenz Curve and Gini Coefficient

How do economists actually "see" inequality? We use two clever tools: a graph and a number.

The Lorenz Curve

This is a graph that shows the distribution of income in a country.
- The x-axis shows the cumulative percentage of the population.
- The y-axis shows the cumulative percentage of total income.

If everyone earned exactly the same, we would have a perfectly straight diagonal line (the Line of Absolute Equality). The Lorenz Curve usually sags below this line like a "banana." The bigger the sag, the more inequality there is!

The Gini Coefficient

The Gini Coefficient turns that graph into a single number between 0 and 1.

The formula is: \( \text{Gini Coefficient} = \frac{A}{A + B} \)

(Where A is the area between the equality line and the Lorenz curve, and B is the area under the Lorenz curve.)

• 0 = Perfect Equality: Everyone has the exact same income.
• 1 = Perfect Inequality: One single person has all the money, and everyone else has zero.

Memory Trick:
Think of the "G" in Gini as "Gap." It measures the gap between the rich and the poor. 0 is "O-K" (equal), 1 is "One person has it all" (unequal).

4. Why is Greater Income Equality a Macroeconomic Objective?

Governments usually want to reduce inequality (Objective 2.3.6f) for several reasons:

• Social Fairness: It is often considered "fairer" if the gap between the richest and poorest isn't too huge.
• Economic Incentives: While some inequality is good (it encourages people to work hard to earn more), too much inequality can prevent poor people from getting an education, which hurts the whole economy.
• Social Stability: High levels of inequality can lead to crime or political unrest.

5. Conflicts: Growth vs. Equality

This is a tricky part of Unit 2! Sometimes, trying to achieve Economic Growth can actually make Inequality worse (Section 2.3.5/2.3.6).

The Conflict:
When an economy grows quickly, the people who own businesses or have high-level skills often see their incomes rise first. This is called Increased Inequality as a cost of growth. If the government tries to fix this by taxing the rich very heavily to give to the poor, it might discourage people from working or investing, which could slow down economic growth.

Don't worry if this seems tricky! Just remember it as a balancing act. The government wants the "cake" (the economy) to get bigger, but they also care about how the "slices" are shared.

6. Policies to Reduce Inequality

How can a government achieve "Greater income equality"? They have a few tools in their kit:

Progressive Taxation

This is a tax system where the more you earn, the higher the percentage of tax you pay. The government takes a larger slice from the rich and uses that money to help the poor through Welfare Payments (benefits).

Supply-Side Policies

As we learned in section 2.3.6, the government can use Education and Training. By helping people get better skills, they can get better-paying jobs, which naturally reduces the income gap.

Common Mistake to Avoid:
Don't confuse Progressive tax with Regressive tax!
Progressive = Tax % goes UP as income goes UP (helps equality).
Regressive = Tax % feels higher for the poor (like a flat tax on bread), which can increase inequality.

Summary Checklist: Are you ready?

1. Do you know the difference between Income (flow) and Wealth (stock)?
2. Can you explain Absolute vs. Relative poverty?
3. Can you describe the Lorenz Curve and the Gini Coefficient (0 to 1)?
4. Can you explain why growth might cause inequality?
5. Can you name one policy (like progressive tax) to reduce the gap?

Great job! You've just covered the essentials of Poverty and Inequality for your International AS Level Economics. Keep practicing those definitions!