The effects are strongest for low-income kids. And in wealthy families, the older wisdom may hold true — the kids of working moms did not fare as well as children of at-home moms.
It's only one study, and it contradicts a large body of older work. But the researchers, at Boston University, say it's one of the first to look at 21st-century moms and kids.
Image: Working mom, via Shutterstock