Development economics studies how low-income countries raise living standards over time. It matters because growth can reduce poverty, improve health, expand education, and create more choices for families. A country grows rich not just by having more money, but by becoming more productive in how it uses labor, land, capital, technology, and institutions.
Key Facts
- GDP per capita = real GDP ÷ population
- Economic growth rate = percentage change in real GDP over time
- Productivity = output ÷ input, such as output per worker
- Investment adds to capital: roads, machines, schools, power systems, and technology
- Human capital rises when people gain education, skills, nutrition, and health care
- Inclusive institutions protect property rights, enforce contracts, and allow broad participation in markets
Vocabulary
- Development economics
- Development economics is the study of how countries improve income, health, education, productivity, and institutions over time.
- GDP per capita
- GDP per capita is a country's total economic output divided by its population, often used as a rough measure of average income.
- Productivity
- Productivity measures how much output is produced from a given amount of labor, capital, land, or other inputs.
- Human capital
- Human capital is the knowledge, skills, health, and experience that make workers more productive.
- Institutions
- Institutions are the formal and informal rules, such as laws, courts, norms, and government systems, that shape economic behavior.
Common Mistakes to Avoid
- Confusing GDP with GDP per capita. Total GDP can rise because population rises, but GDP per capita shows whether average output per person is increasing.
- Assuming natural resources automatically make a country rich. Resources can help, but weak institutions, corruption, conflict, or poor investment can prevent broad development.
- Thinking growth only comes from factories. Manufacturing can matter, but agriculture, services, education, health, infrastructure, and technology can all raise productivity.
- Ignoring distribution when judging development. A country can grow while many people stay poor if gains are captured by a small group or if access to jobs, schools, and credit is unequal.
Practice Questions
- 1 A country has real GDP of $240 billion and a population of 60 million. What is its GDP per capita?
- 2 A worker produces 50 units per day before receiving better tools and 80 units per day after receiving them. By what percentage did the worker's productivity increase?
- 3 A rural country invests in roads, reliable electricity, primary education, and simpler business licensing. Explain how each investment could help move the economy up a development ladder from subsistence farming toward higher incomes.