By Lily Rothman
March 18, 2015

Word that a new study has found that children who were breast-fed for longer ended up smarter and richer will be welcome among one group of mothers in particular, those who practice the “attachment parenting” style that supports a longer-than-average time before weaning. (The study looked at babies who were breast-fed for at least a year, versus those who did for less than a month; some attachment-parenting adherents breast-feed their children for far longer.)

Those mothers — and the man who introduced the world to attachment parenting, Dr. Bill Sears — were the subject of a 2012 TIME story which, controversially, ran with a cover image of real-life mom Jamie Lynne Grumet breast-feeding her 3-year-old son. And, as the story explained, even as some criticized Sears and his ideas, at least one of his pieces of advice seemed to be permeating society: breast-feeding was more common than it had been in decades.

As TIME’s Kate Pickert put it:

According to a 2014 CDC report, about a quarter of U.S. babies were still breastfeeding (though not necessarily exclusively) at 1 year.

Read the rest of the story, here in the TIME archives: The Man Who Remade Motherhood

Write to Lily Rothman at lily.rothman@time.com.

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