07/06/2009 05:12 am ET Updated Nov 17, 2011

Fatherhood Makes You Smarter

While recent studies show that pregnancy and childbirth positively alter the brain chemistry of mothers, could parenting have a similar impact on men?

The 2005 book The Mommy Brain documented research by Craig Kinsley and Kelly Lambert on female rats who were either pregnant or recent mothers, showing that motherhood sharpened their senses and increased their motivation and resilience. Susan Kuchinskas reports for Miller-McCune that this same team is now concentrating on fathers. Their research on mice, along with similar studies on monkeys and humans, suggests that fatherhood chemically alters men to make them better fathers.