How economic inequality harms societies | Richard Wilkinson

Summary

Richard Wilkinson argues that economic inequality is associated with a broad range of social and health problems in rich, developed societies. His central claim is that once countries are relatively wealthy, people’s relative income and social position matter more for well-being than further increases in average national income.

Main Ideas and Evidence

• Comparisons between countries and within them: Among rich countries, higher average income does not appear to predict longer life expectancy. Within a society, however, health tends to improve up the income and social-status ladder. Wilkinson suggests that relative position and the size of income gaps help explain this difference.
• How inequality was measured: The talk compares the income of the richest 20% with that of the poorest 20% in rich market democracies. The gap is roughly 3.5 to 4 times in more equal countries, such as Japan and the Nordic countries, and about twice as large in some more unequal countries, including the U.K. and the U.S.
• A range of problems is linked to inequality: Wilkinson combines measures of health and social problems into an index. More unequal societies tend to fare worse on measures including life expectancy, children’s educational performance, infant mortality, homicide, imprisonment, teenage birth rates, trust, obesity, mental illness, and social mobility.
• Average national income does not show the same pattern: In the comparisons presented, inequality correlates with the overall index of health and social problems and with a separate UNICEF child-well-being index. National income per person does not show the same relationship.
• Examples of individual outcomes:
  • Trust and community involvement tend to be higher in more equal societies.
  • Mental illness, violence, imprisonment, and school dropout rates tend to be higher in more unequal settings.
  • Social mobility is lower where inequality is greater: parental income is more strongly associated with children’s income.
• The pattern appears across different comparisons: Wilkinson reports similar relationships when comparing rich developed countries and, separately, U.S. states. He also notes that more equal societies appear to do better across social classes, though the largest gains are often at the bottom of the hierarchy.
• There is more than one route to greater equality: Sweden reduces income gaps substantially through taxes and welfare programs, while Japan starts with smaller differences in pre-tax earnings. Wilkinson’s comparisons suggest that the route matters less than achieving a smaller gap overall.
• Proposed explanation: Wilkinson emphasizes psychosocial effects, including status competition, worries about being judged, and feelings of superiority or inferiority. He connects these pressures to stress and suggests that feeling disrespected or looked down on may also contribute to violence.
• Caveats and responses to criticism: Wilkinson acknowledges that correlation alone does not prove causation. He says the analysis uses available data rather than selecting only favorable cases, and notes that other research has examined possible causal pathways and controlled for factors such as poverty and education.
• Conclusion and policy direction: Wilkinson argues that reducing income differences can improve quality of life across society. He highlights both post-tax redistribution and pre-tax income differences, including executive compensation and greater accountability of employers to employees.

Speakers and Sources

• Speaker: Richard Wilkinson
• Data and research sources mentioned: United Nations income data, described as comparable to World Bank data; the World Values Survey; the World Health Organization (WHO); UNICEF’s child-well-being index; a paper in the British Medical Journal; the U.S. General Social Survey; and studies on stress and cortisol reviewed in social psychology.