Library Economics 0455 5.4 Differences in Economic Development
O Level · Economics 0455

5.4 Differences in Economic Development

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Differences in Economic Development

Cambridge IGCSE Economics 5.4

The Big Idea
Countries develop at different rates because of differences in income, productivity, population, sector composition, savings, education, and healthcare — and these factors are deeply interconnected.

What You Need to Know

Economic Development is a sustainable increase in living standards, measured by life span, education, and income.
HDI (Human Development Index) classifies countries into five categories from low to very high development.
Income Matters — but inequality within countries can mean high GDP/capita doesn't equal widespread development.
Productivity — better skills lead to higher wages, which raises living standards.
Population Growth — more people means more tax revenue but also more to spend on services.
Sector Composition — primary sector workers earn the least, tertiary the most, so developed economies are less dependent on farming.
Savings & Investment create a circular loop that drives economic growth.
Education & Healthcare directly boost productivity and output, underpinning long-term development.

What is Economic Development?

Definition & Core Features
Economic development is not just growth (getting richer). It's a sustainable increase in living standards for a country. Think of it as genuine, lasting improvement in how people live. The three pillars are:
  • Life span: People live longer because of better healthcare, nutrition, and safety.
  • Education levels: More people get schooled, skilled, and literate.
  • Income: Average earnings rise, and people can buy more goods and services.
Think of it like this: A country that discovers oil and gets instantly rich in GDP but where most people stay poorly educated and die young? That's not economic development. A country where schools improve, healthcare spreads, and wages grow steadily? That's development.
How We Measure It: GDP and HDI
We use two main yardsticks:
Measure What It Is Strength Weakness
Real GDP Total economic output adjusted for inflation Easy to measure; shows how much an economy produces Ignores inequality — a rich billionaire skews the average. Doesn't measure health or education directly.
HDI (Human Development Index) A score (0–1) combining life expectancy, education, and income per capita Captures real living standards; less biased by inequality; shows quality of life More complex to calculate; combines different measures into one number (loses detail)
Key insight: A country might have high GDP/capita but low HDI if that wealth is concentrated among a tiny elite. That's why both matter.
HDI Categories
The UN classifies all countries into five tiers using HDI scores:
  • Low (HDI < 0.550): Poorest economies; limited access to healthcare, education, income.
  • Medium-Low (0.550–0.699): Developing; improving services; rising incomes.
  • High (0.700–0.799): Well-developed; strong education and healthcare; higher incomes.
  • Very High (> 0.800): Most developed; excellent health, education, and income; stable institutions.
Remember
not lasting, broad improvement in people's lives
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Also in the full note
  • The Eight Factors: Why Development Differs
  • How These Factors Connect
  • What to Memorise
  • Concepts Checklist — Have You Got These?
  • Exam Tips & Common Pitfalls
  • Final Practice Questions
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