This is hugely compelling evidence that upward mobility -- the ability of someone to improve his social and economic situation -- depends significantly on his surroundings. Children who moved out of low-income neighborhoods had markedly improved outcomes later in life, above and beyond other factors like race, ethnicity, or gender. This is why we must do two things: (A) Continue to improve low-income, unstable neighborhoods, and (B) enhance the ability of people to find good, affordable housing in already stable and supportive neighborhoods. It also illustrates the fact that this is not a one-generation "fix"...it can take several generations for families that move to achieve incomes comparable to those who've lived in wealthier neighborhoods for generations.
Here's the NY Times article:
And here's the website of the Equality of Opportunity research project, which performed the research: http://www.equality-of-opportunity.org/