9.1 - Defining, measuring and explaining development

Development includes opportunities and welfare

Development concerns improvements in people's lives and opportunities. Human welfare concerns their wellbeing, including health, security and access to necessities. Economic criteria include income, output and employment. Broader social criteria include education, health and housing; political criteria include rights, participation, accountability and freedom from insecurity.

Economic growth can provide jobs and tax revenue for services, but production alone does not show who benefits. A mine can raise output while polluting a community's water. A household may receive more income yet face unsafe work or loss of secure land. Judgements therefore involve what outcomes are valued and whose experience is counted.

Sustainable development considers whether improvements can continue without undermining future opportunities through environmental damage, social exclusion or unmanageable costs. It applies to wealthy countries as well as poorer ones. A national label cannot mean that every resident has the same standard of living.

Factors reinforce or obstruct each other

Economic investment can improve jobs, infrastructure and tax receipts. Social improvements in health and education help people participate and use new technology. Technology can raise agricultural output or connect a remote business to markets, but needs electricity, skills, affordability and maintenance. Access matters more than the mere presence of a device.

Food security means reliable access to sufficient safe, nutritious food. Water security requires adequate, safe and reliable water access. Undernutrition and unsafe water can cause illness, reduce school attendance and lower productivity; treatment costs can then reduce household investment. Conversely, clean water and better nutrition can help people learn and work, strengthening other improvements.

Cultural practices, languages, networks and values influence trust, care, work and the acceptability of projects. They are diverse and change over time; culture is not a fixed explanation for a country's poverty. A project designed without understanding local priorities can fail even when its technology works. Discrimination or unequal rights can restrict some groups' access to education, property or employment.

These are interacting processes, not isolated checklist items. A road creates opportunity only if people can afford transport and reach useful markets; a clinic needs staff, supplies and accessible services. The same investment may produce different results in different contexts.

GDP per person is useful but incomplete

Gross domestic product (GDP) measures the value of final goods and services produced within an economy during a period. Dividing by population adjusts for country size.

For an illustrative economy with GDP of US$200 billion and 20 million residents, GDP per capita is US$10,000 per year. Divide 200,000 million by 20 million; the population units cancel. A bigger total economy can have lower GDP per person than a smaller one with far fewer residents.

Current-dollar comparisons depend on exchange rates. Purchasing power parity (PPP) adjusts for differences in price levels, making comparisons of purchasing power more informative. Real measures adjust for price change over time. Always identify which measure a source uses.