Measuring Development (GDP, Birth Rate, HDI)

Economic Indicators

GDP per capita is the total value of all goods and services produced in a country in a year divided by its population. It shows the average economic output per person and is often used to compare the wealth of different countries.

For example, if Country A has a GDP of $\text{\pounds}500$ billion and a population of 50 million, its GDP per capita is:

$$\frac{\text{\pounds}500,000,000,000}{50,000,000} = \text{\pounds}10,000$$

Limitations of GDP include:

• It does not show how wealth is distributed among people (income inequality).
• It ignores non-market activities like unpaid work or informal economies.
• It does not measure quality of life, health, education, or environmental factors.
• It can be distorted by exchange rates and inflation.

Income distribution refers to how evenly or unevenly income is shared across a population. Two countries with the same GDP per capita may have very different levels of inequality. For example, a country with a few very rich people and many poor people has unequal income distribution.

Economic sectors show the types of jobs people do and how the economy is structured:

• Primary sector: Extracting raw materials (farming, fishing, mining).
• Secondary sector: Manufacturing and industry (factories, construction).
• Tertiary sector: Services (healthcare, education, retail, banking).

In less developed countries, a larger proportion of people work in the primary sector. In more developed countries, most people work in the tertiary sector.

Demographic Indicators

Birth rate is the number of live births per 1,000 people in a population per year. It is a key measure of population growth.

Death rate is the number of deaths per 1,000 people in a population per year. Comparing birth and death rates helps understand population change.

Natural increase is the difference between the birth rate and the death rate. If the birth rate is higher, the population grows; if the death rate is higher, the population shrinks.

For example, if a country has a birth rate of 30 and a death rate of 10 (both per 1,000 people), the natural increase is:

$$30 - 10 = 20 \text{ per } 1,000$$

Population growth impact affects development because:

• High birth rates can increase demand for resources like schools, healthcare, and jobs.
• Rapid population growth can strain infrastructure and slow economic progress.
• Low birth rates may lead to an ageing population, causing labour shortages and higher healthcare costs.

Human Development Index (HDI)

HDI is a composite measure that combines three key indicators to assess a country's level of development:

• Life expectancy at birth  shows health and healthcare quality.
• Education  measured by average years of schooling and expected years of schooling.
• Income  measured by Gross National Income (GNI) per capita adjusted for purchasing power.

HDI values range from 0 to 1. A higher HDI means a higher level of development. Countries are often grouped as:

• Very high human development (HDI above 0.8)
• High human development (0.7 60.8)
• Medium human development (0.55 60.7)
• Low human development (below 0.55)

Advantages of HDI over single indicators:

• Gives a broader picture of development beyond just income.
• Includes social factors like health and education.
• Allows better comparison between countries with similar GDP but different quality of life.

For example, two countries may have similar GDP per capita, but one may have better education and life expectancy, resulting in a higher HDI.

For instance, if a country has a GDP of $\text{\pounds}600,000,000,000$ and a population of 60 million, the GDP per capita would be $\frac{\text{\pounds}600,000,000,000}{60,000,000} = \text{\pounds}10,000$.