I saw this comic from Calamities of Nature earlier and just had to repost it.
The results, sadly, don’t surprise me at all. This graph makes it look like the U.S. is some great anomaly (and it is in many ways), but I have a hypothesis that actually causes this graph to make sense. The U.S. has greater wealth inequality than the other countries with a high GDP per capita, by quite a large margin. (2) This implies that if we were to re-graph this using median personal wealth, instead of mean personal wealth, the U.S. would be much farther to the left on the graph. I suspect it would still be an outlier, but not nearly as much of an obvious outlier.
The above graphic shows the Gini coefficient for nations around the world. Blue means near perfect wealth equality, and dark read means near perfect inequality. Notice how red the U.S. is compared to western Europe, Japan, and Australia.
P.S. Note the sources used to create the Calamities of Nature graph: a government agency (not a politician) and a journal article from Science. It passes the trustworthiness test outlined in my previous post.
(1) Piro, Tony. “Belief in Evolution Versus National Wealth.” Calamities of Nature. 15th June, 2011. Available: http://www.calamitiesofnature.com/archive/?c=559
(2) “Economic Inequality.” Wikipedia. Available: http://en.wikipedia.org/wiki/Economic_inequality