Comment Re:Cause, or effect? (Score 4, Insightful) 324
The link is between nutrition and brain development, and considering the odds of poor nutrition is higher in poorer families than in wealthier families, the conclusion does not seem bad at all. Nothing says that all families that live in poverty will have children with developmental problems, but it does argue you're much more likely to see the phenomenon in such families.
I can't imagine why anyone would see this as controversial.