GDP per capita is often used but has flaws:
- differences in exchange rates- GDP measured in $ will fluctuate with exchange rates
- differences in living costs- prices of goods and services will vary between countries (therefore adjust for PPP- purchasing power parity)
- regional variations in income and spending
- inequality
Inequality is measured by the Lorenz curve and Gini coefficient
Lorenz curve- closer the curve is to the curve of perfect equality= more equal society
Gini coefficient- closer to 0, more equal the society- 1 is perfectly unequal
- economic growth and externalities- increasing GDP may be at the expense of sustainability
- black economy and non-monetised sectors
- reliability of GDP/GNP figures- difficult to collect in countries with a weak civil service
Therefore: use HDI (human development index); considers education, health etc.
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