GNI per capita linked to liberal democracy
Comparing Key features of liberal democracy with GNI (current US$), per capita across 169 countries, 2025–2025.
- Rank correlation
- +0.58
- Holding size constant
- +0.42
- Countries compared
- 169
- Period
- 2025–2025
What might link these
The relationship between GNI per capita and key features of liberal democracy might be influenced by factors such as education, which can contribute to both economic growth and democratic values. A careful reader should be cautious about assuming causation and consider likely confounders like institutional stability. Education could be a significant confounder in this relationship.
Why this is not proof of anything
This is a correlation across countries, not an experiment. It cannot show that either indicator causes the other, and both may simply follow a third thing. This correlation could mislead by implying a direct causal link between wealth and democracy, when in fact other factors may be driving the relationship.
The second figure above repeats the measurement with national population and income held constant. It is the more conservative number: a relationship that largely disappears there was mostly telling you that larger, richer countries have more of most things.
How this was measured
Both indicators were ranked across every country reporting each, and the two rankings compared — ranks rather than raw values, because a handful of very large countries can otherwise manufacture a relationship on their own. The calculation is arithmetic over figures already published on this site; the commentary above is drafted from the two indicator names and the resulting coefficients.