Cover Image: July 2011 Scientific American Magazine See Inside

How Dads Develop [Preview]

When men morph into fathers, they experience a neural revival that benefits their children














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Image: Photoillustration by Aaron Goodman

In Brief

  1. The brains of babies and fathers alike benefit from one another’s influence.
  2. A father sprouts supplemental neurons in his brain and experiences hormonal changes after the birth of a child.
  3. For a baby, the presence of a father figure early on may be important for developing healthy behaviors later.

More In This Article

Last year I met my four-month-old nephew, Landon, for the first time. During the weekend I spent visiting him in San Diego, my inner science nerd often got the best of me. I would find myself probing my nephew’s foot reflexes and offering unsolicited explanations for why his toes curled this way or that, only to be met by my wife’s disapproving looks and the new parents’ blank stares. Soon enough I dropped the shoptalk in favor of baby talk.

Having spent my postdoctoral career in neuroscience, I have seen how important early experiences are for a baby animal’s health. In the first few days after birth, babies’ brains are like sponges soaking up their sensory environment. What to me seemed like inconsequential sights or smells had markedly different impacts on the impressionable newborns, shaping their brains as they tried to make sense of the unfamiliar world around them. But as astonishing as a baby’s brain is, on this family visit what struck me was the redevelopment of my 26-year-old brother-in-law.


This article was originally published with the title How Dads Develop.



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  1. 1. maxsmart 06:37 PM 6/29/11

    Which is a reason to suspect when parents are charged wuith child abuse as seems to be an excessive predilection lately...they are more likely to make mistakes than intentionally abuse their children.

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