The thing i like about this is that it gives two dominant theories for cyclical poverty, a cultural theory (which i don't buy)--which basically says that there is a culture of poverty and poor kids pick up the cultural traits from their poor parents and repeat them, their kids pick them up etc., and a structural theory--which basically suggests that the social structure condemns people to poverty (which i buy)...so basically if you have a crappy school you are not likely to go to college and therefore very likely (remember 90%) to be in poverty...which means you probably live in a really bad school district and thus your kids go to a really poor school which means they are not likely to go to college, etc. the article discusses mobility. it seems as we start the fourth decade of little to no mobility some people are concerned...
http://www.nytimes.com/2008/02/20/us/20mobility.html?_r=1&ref=todayspaper&oref=slogin