Welcome to the Study of Economic Development!
In our previous topics, we often talked about Economic Growth—which is basically an economy getting "bigger" (more stuff being produced). But is bigger always better? Not necessarily.
In this chapter, we explore Development. If Growth is about how much money a country has, Development is about the quality of life its citizens actually enjoy. We will look at how economies change shape as they grow, how we measure success beyond just money, and how we can keep the world healthy for future generations. Don't worry if it feels like a lot of definitions; we will break it down step-by-step!
1. The Structure of an Economy
As a country develops, the way people earn a living usually changes. Economists split the economy into three main "sectors." Think of this as the "Economic Life Cycle."
The Three Sectors:
1. Primary Sector: This involves extracting raw materials directly from the earth.
Examples: Farming, mining, fishing, and forestry.
Low-income countries usually have a very large primary sector because most people are subsistence farmers.
2. Secondary Sector: This is "manufacturing"—taking those raw materials and turning them into finished goods.
Examples: Car factories, food processing, or building houses.
Emerging economies (like China or Vietnam) often see this sector grow rapidly as they industrialise.
3. Tertiary Sector: This is the "service" sector. Instead of making "things," people provide skills and time.
Examples: Banking, teaching, nursing, tourism, and hairdressing.
Developed countries (like the UK) have a massive tertiary sector. In fact, about 80% of the UK economy is services!
Quick Review: The Sector Shift
As a country moves from "Developing" to "Developed," it typically moves its workforce:
Primary → Secondary → Tertiary
2. Sustainable Development
The government doesn't just want the economy to grow today; they want it to last. This is the policy objective of Sustainable Development.
The Definition: Sustainable development is meeting the needs of the present generation without compromising the ability of future generations to meet their own needs.
The Three Pillars of Sustainability:
To be truly sustainable, development must balance three things:
1. Economic: Profit and growth are still important.
2. Social: People need fair wages, education, and healthcare.
3. Environmental: We can't use up all the oil or destroy the forests, or there will be nothing left for our grandchildren!
Analogy: The Forest
Imagine a forest. Growth is cutting down every single tree today to sell the wood for a huge profit. Sustainable Development is cutting down only some trees and planting new ones so that you can keep selling wood forever.
Key Takeaway: Sustainable development is about longevity and fairness across generations.
3. Economic Growth vs. Sustainable Development
A common exam question asks about the relationship between these two. They are not the same thing!
Can Growth Help Development?
Yes! Higher Economic Growth (increase in Real GDP) means:
- The government collects more tax revenue to spend on schools and hospitals.
- People have higher incomes to buy better food and medicine.
- Firms might invest in "green technology" that reduces pollution.
Can Growth Hurt Development?
Yes! Rapid growth can lead to:
- Negative Externalities: Massive pollution and CO2 emissions (bad for the environment).
- Income Inequality: The rich get much richer while the poor stay poor.
- Resource Depletion: Using up non-renewable resources too fast.
Common Mistake to Avoid: Don't assume that a high GDP means a country is "developed." A country could have lots of oil money (High GDP) but very poor schools and a low life expectancy.
4. Measuring Success: GDP vs. HDI
How do we know if a country is actually developing? We use indicators.
GDP (Gross Domestic Product)
We use GDP per capita (total income divided by the population) to measure the average "wealth."
The Problem: It ignores how money is shared (inequality), it doesn't measure health, and it doesn't value "unpaid" work like caring for a family member.
The HDI (Human Development Index)
This is the "gold standard" for measuring development. It combines three equally weighted parts:
1. Health: Measured by Life Expectancy at birth.
2. Education (Knowledge): Measured by average years of schooling for adults and expected years of schooling for children.
3. Standard of Living: Measured by GNI per capita (adjusted for Purchasing Power Parity—which basically means adjusting for the local cost of living).
Memory Aid: "HEN"
Health (Life Expectancy)
Education (Schooling)
Net Income (GNI per capita)
Did you know? The HDI gives a score between 0 and 1. The closer to 1.0, the more developed the country is. Norway and Switzerland are usually at the top!
5. Alternative Indicators
Sometimes HDI isn't enough. Economists also look at:
1. The Gini Coefficient: This measures Income Inequality. A score of 0 means everyone has the exact same amount of money; a score of 1 means one person has everything. Lower is usually better for social development.
2. Access to Clean Water/Sanitation: A very practical measure of daily life quality.
3. Mobile Phone/Internet Usage: Shows how "connected" and technologically advanced a society is.
4. Gender Inequality Index: Measures if women have the same opportunities as men in health, empowerment, and the labour market.
Quick Summary Box
- Structure: Countries move from Primary (farming) to Secondary (factories) to Tertiary (services).
- Sustainability: Growing today without ruining tomorrow.
- Growth vs Development: Growth is "more money"; Development is "better life."
- HDI: The best measure because it looks at Health, Education, and Income together.
Don't worry if this seems tricky at first! Just remember: Economics isn't just about money in a bank; it's about the people using that money to live better lives.