The conclusions are debatable (although not surprisingly I think they have merit), but the differential in economic mobility is widely affirmed. Canda and Western Europe have higher economic mobility than the US. They also have less wage disparity, generally speaking. I think it's not unreasonable to draw a link between the two. There's even a good Krugman column on it today, which will of course immediately discredit this line of thinking on the boards.
1/16/12 at 2:43pm