https://www.aei.org/articles/what-malcolm-gladwell-gets-wrong-about-poverty/
What creates "strong families"? It's definitely more than a two-parent household. Economic and social support are highly helpful as well as a myriad of other factors.
Watch the potential for subtle right leaning bias here: https://en.wikipedia.org/wiki/American_Enterprise_Institute#Political_stance_and_impact
Chetty’s paper reports that “the strongest and most robust predictor [of the level of upward mobility in an area] is the fraction of children with single parents.”
Cross reference with: https://www.theatlantic.com/magazine/archive/2019/08/raj-chettys-american-dream/592804
I should read more of Chetty's primary material here.
https://www.theatlantic.com/magazine/archive/2019/08/raj-chettys-american-dream/592804/
read in July 2019, but didn't catch the reference.