What is development?

· Economic development is multidimensional: it is broader than just higher output/income.
· Development includes improvements in income, health, education, equality, access to energy, and the environment.
· In exams, distinguish economic growth from economic development:
· Economic growth = increase in real GDP or real GDP per capita.
· Economic development = improvement in economic well-being and quality of life.
· Key exam idea: a country can have growth without much development if gains are uneven or if health, education, and sustainability remain weak.

This map shows differences in human development across countries using a composite measure. It is useful for reinforcing that development is broader than income alone and varies widely across the world. Source

Single indicators of development

· Single indicators measure one aspect of development only.
· Important examples from the syllabus:
· GDP/GNI per person (per capita) at PPP
· Health indicators
· Education indicators
· Economic/social inequality indicators
· Energy indicators
· Environmental indicators
· In evaluation, single indicators are useful because they are often simple, comparable, and easy to collect.
· However, they are limited because no one indicator captures the full multidimensional nature of development.

GDP/GNI per capita at PPP

· GDP per capita = average output/income per person produced within a country.
· GNI per capita = average income per person earned by a country’s residents, including net income from abroad.
· PPP (purchasing power parity) adjusts for differences in cost of living between countries.
· PPP-adjusted figures are usually better for comparing living standards internationally than market exchange rate figures.
· Strengths:
· Gives a rough measure of average material living standards.
· Useful for cross-country comparisons, especially when adjusted for PPP.
· Often widely available and updated regularly.
· Limitations:
· Shows only an average and hides income inequality.
· Ignores health, education, environmental quality, and other non-income factors.
· Does not show the distribution of income.
· May not reflect the informal economy or unpaid work well.

This map shows international differences in GDP per capita at PPP. It is useful for explaining material living standards, while also showing why income alone does not fully capture development. Source

Health, education, inequality, energy, and environmental indicators

· Health indicators may include measures such as life expectancy or other indicators of health outcomes.
· Education indicators focus on access to and attainment in schooling and skills.
· Economic/social inequality indicators show how evenly income, wealth, or opportunities are distributed.
· Energy indicators can show access to reliable energy, which affects productivity and living standards.
· Environmental indicators help assess whether development is sustainable.
· Strengths:
· Can highlight specific development strengths or weaknesses.
· Helpful for policy because they identify target areas for improvement.
· Limitations:
· Each indicator is still narrow.
· Comparisons may be affected by data quality, definitions, and availability.
· One strong indicator does not mean a country is highly developed overall.

This graph shows that countries with higher incomes often have higher life expectancy, but the relationship is not perfect. It helps explain why health indicators matter alongside income when measuring development. Source

Composite indicators of development

· Composite indicators combine several measures into one index.
· The syllabus requires:
· Human Development Index (HDI)
· Gender Inequality Index (GII)
· Inequality-adjusted Human Development Index (IHDI)
· Happy Planet Index
· Main strength: composite indicators give a broader picture of development than single indicators.
· Main limitation: they still depend on which variables are chosen and how they are weighted.

Human Development Index (HDI)

· HDI is a composite index covering three core dimensions:
· A long and healthy life
· Knowledge/education
· A decent standard of living
· It is often a better measure of development than GDP/GNI per capita alone because it includes non-income dimensions.
· Strengths:
· Broader than income-only measures.
· Easy to compare countries using a single number.
· Focuses on core development outcomes that are highly exam relevant.
· Limitations:
· Still simplifies development into one number.
· Does not fully capture inequality, environmental damage, or all quality-of-life factors.
· Countries with similar HDI may still differ greatly in real living conditions.

This map is a clear visual for the Human Development Index because it compares countries using a broader measure than income alone. It is ideal for discussing how HDI combines income, health, and education. Source

Gender Inequality Index (GII)

· GII measures gender-based disadvantage.
· It highlights inequalities between men and women in key areas of development.
· Exam use: it helps show that overall development can be high while gender inequality remains significant.
· Strengths:
· Draws attention to an important dimension of development often hidden by averages.
· Useful for comparing gender-related development gaps across countries.
· Limitations:
· Narrower than broader measures like HDI because it focuses specifically on gender inequality.
· Like all indices, it depends on data availability and methodology.

This map shows differences in gender inequality across countries. It is useful for showing that a country may perform reasonably well on broad development measures while still having serious gender-based inequality. Source

Inequality-adjusted Human Development Index (IHDI)

· IHDI adjusts HDI to account for inequality within a country.
· If there is no inequality, then IHDI = HDI.
· The more inequality there is, the more IHDI falls below HDI.
· Exam use: compare HDI and IHDI to show the loss in human development due to inequality.
· Strengths:
· Improves on HDI by considering distribution, not just averages.
· Useful where inequality is a major barrier to development.
· Limitations:
· Still cannot include every aspect of development.
· Depends on the quality of inequality data.

Happy Planet Index

· Happy Planet Index is a composite indicator that looks beyond income and asks whether countries convert resources into long, happy lives in a sustainable way.
· Exam use: it is useful when discussing whether development measures should include well-being and environmental sustainability.
· Strengths:
· Includes dimensions often ignored by GDP-based measures.
· Encourages evaluation of whether development is sustainable.
· Limitations:
· Less conventional than HDI, so comparisons may be less familiar.
· Choice of components and weighting can be debated.

Strengths and limitations of different approaches

· Single indicators
· Strengths: simple, clear, easy to compare, often widely available.
· Limitations: too narrow, can hide inequality, miss non-income dimensions.
· Composite indicators
· Strengths: broader, more realistic picture of development, capture several dimensions at once.
· Limitations: may hide detail, depend on weighting, methodology, and data quality.
· Strong exam judgment:
· No single measure is perfect.
· Best evaluation usually argues that economists should use a range of indicators.
· Composite indicators are often better for measuring development, while GDP/GNI per capita at PPP remains useful for measuring average income/material living standards.

Economic growth vs economic development

· Economic growth can contribute to economic development by increasing incomes and tax revenues, allowing more spending on health, education, and infrastructure.
· But growth does not automatically lead to development.
· Growth may fail to improve development if:
· gains go mainly to a small group
· inequality rises
· public services remain weak
· environmental damage increases
· Strong exam line: growth is possible without significant development, and development can be limited without sustained growth.