[undoware]

It wasn't in the article -- the past few years have been disruptive in the social sciences because of multiple replicated studies that show stress, including poverty stress (which is a well-quantified phenomenon) have a profound impact on working memory ("how much RAM your brain has").

Google it. I first read about it in the Economist, but really, it's where the conversation starts these days.

Brain damage is one of the main mechanisms by which poverty passes itself down to subsequent generations.