The science of income disparity
In this TED video, researcher Richard Wilkinson discusses real work data based levels of income disparity one finds in "rich developed-market democracies." As you can see (at 4:11 of the video), nations with low amounts of GNP don't tend to exhibit aberrant levels of health and social problems. On the other hand, countries that exhibit substantial amount of income disparity (3:44) exhibit high levels of health and social problems. GNP per capita is thus a poor measure of a country's well-being. Further, we should be alarmed at high levels of income disparity. The same relationship (5:01) is apparent when one compares GNP to the UNICEF scale of child well-being. "The national well-being of our societies is not dependent any longer on national income and economic growth." The same tests were run on the 50 states of the U.S. with the same results. What else suffers along with high income disparity? Trust (5:45), involvement in community life (6:00), mental illness (6:50), violence, percentage of the population in prison (7:40), the percentage of dropouts in high school (8:16), social mobility (poor parents having children who end up poor) (8:24), drug abuse, life expectancy, obesity, math and literacy scores and many other problems (9:10). Wilkinson sums it up by saying that the countries that do worse---those that have higher social dysfunction--tend to be more economically unequal. How do the various low income disparity nations and states attain their earning levels? Sweden does it by heavily taxing the rich. Japan has more comparable wages to begin with. Wilkinson's numbers show, however, that it doesn't much matter how you get your equality as long as you get there somehow. He adds that it's not only the poor that are affected by income disparity (12:20). Additional statistics show that the wealthy significantly benefit from general equality, not just the poor. What is the proximate mechanism for all of these startling numbers. Wilkinson points to the following consequences of inequality:
- More superiority and inferiority;
- More status competition and consumerism;
- More status insecurity;
- More worry about how we are seen and judged;
- More "social evaluation anxiety" (threats to self-esteem & social status, fear of negative judgments).