10 New Things Science Says About Moms

Among then: They answer a lot of questions and their spit is good for us

What makes a 21st century mom?
What makes a 21st century mom? Photo courtesy of Flickr user Robert Whitehead

To be honest, I’ve never associated motherhood with science. I assume this has everything to do with the fact that I’m one of eight kids, and while I’m sure we were a study in chaos theory, my mother didn’t have much time to nail the concept and work it into bedtime stories.

That said, moms remain a subject of scientific inquiry because, no matter how constant they may seem to us, they’re always changing to keep up with the times.

Here then are 10 recent studies or surveys that give a bit more insight into the institution of 21st century moms.

1) Have I got a story for you: According to a study published recently in the journal Sex Roles, moms are better than dads at telling stories and reminiscing with their kids, and that helps children develop their emotional skills. The researchers observed that moms tended to include more emotional terms in their stories and were more likely to then explain them to their children.

2) But how many of the answers were “Because I said so”: A survey of 1,000 moms in the United Kingdom found that the typical mother answers up to 300 questions a day from their kids. Four-year-old girls are the most inquisitive, averaging a fresh question about every two minutes. The most questions are asked during meals–an average of 11–followed by shopping trips–10 questions–and bedtime–nine questions.

3) That magic touch: The skin-to-skin touch of a mother can make a big difference in helping preemies or other at-risk babies deal with the pain and stress of injections. Researchers determined that the touch of a father or an unrelated women can also help lower the stress of an at-risk baby, but neither had quite the soothing effect of physical contact with the child’s mother.

4) Even mom spit is special: A recent article in the journal Pediatrics recommended that mothers clean off their child’s pacifier by putting it in their own mouths. That’s right. What the researchers found is that infants whose mothers sucked on their pacifiers to clean them developed fewer allergies than children whose mothers rinsed or boiled the pacifiers. The children of moms who gave pacifiers a mouth rinse also had lower rates of eczema, fewer signs of asthma and smaller amounts of a type of white blood cell that rises in response to allergies and other disorders. The findings are in line with the growing evidence that some exposure to germs at a young age can be good for kids.

5) Heigh-ho, heigh-ho, it’s off to work I go: About 40 percent of working mothers in the U.S. now say the ideal situation for them would be to work full time. That’s according to the latest research on the matter from the Pew Research Center. It’s almost twice as many who felt that way in 2007, when 21 percent of the women surveyed said that would be their preference. The researchers speculated that this is probably a reflection of tough economic times. But working part time is still the top choice among working women, although the percentage of women who said that would be the best situation for them dropped from 60 percent in 2007 to 50 percent in the most recent survey.

6) Don’t do what I do: Just as moms generally can do more good for their kids than dads, they also apparently can do more harm. A 34-year study by the British think tank Demos found that the alcohol drinking habits of mothers can have the greatest impact on how their children consume alcohol. While at age 16, a child’s drinking behavior was greatly influenced by peers, the researchers found that that changed as children reached maturity. Then, the scientists more often discovered clear connections between alcohol consumption–particularly binge drinking–and childhood memories of how their mothers would drink.

7) Crouching tiger, failing children: So much for the power of Tiger Moms, the stereotypical demanding Asian mother depicted in the much-debated Battle Hymn of the Tiger Mother in 2011. A University of Texas professor named Su Yeong Kim, who had been following more than 300 Asian-American families for a decade, recently published her findings. What she observed didn’t quite match the stereotype. Children of parents whom Kim classified as “tiger” had lower academic achievement–and more psychological problems–than the kids of parents characterized as “supportive” or “easygoing.”

8) Even in utero we know to take a vowel: According to a joint study of newborns in Washington State and in Stockholm, babies start learning language from their moms even before they leave the womb. The scientists said their research showed that the infants began locking on to the vowel sounds of their mothers before they were born. How did they know that? They studied 40 infants, all about 30 hours old, and they found that the babies–who were played vowel sounds in foreign languages and the language of their mothers–consistently sucked longer on pacifiers when they heard sounds different from the ones they had heard in utero.

9) Sure, but you’d know nothing about Legos without us: Judging by a bit of research done in Finland, boys, at least in times past, could take almost nine months off a mother’s life, compared to girls. The Finnish scientists analyzed the post-childbirth survival rates of 11,166 mothers and 6,360 fathers in pre-industrial Finland, between the 17th and 20th centuries. And they found that a mother who bore six sons would live on average another 32.4 years after the youngest son’s birth, while a mother who gave birth to girls would live approximately 33.1 years after her youngest daughter came along. The shorter life expectancy was the same regardless of the mom’s social or financial status. The researchers surmised that not only was bearing boys more physically demanding for the mothers, but also that daughters were more likely to prolong their mothers’ lives by helping with household responsibilities.

10) Putting it in words: And finally…this probably shouldn’t come as a big surprise, but a study just published in the journal Proceedings of the National Academy of Sciences suggests that caveman didn’t just grunt, but actually had a decent little vocabulary that included the equivalent of words for ‘thou’, ‘you’, ‘we,’ ‘bark,’ ‘fire,’ ‘spit’ and yes, ‘mother.’

Video bonus: Is there really such a thing as a “mom gene?” Here’s a report from “Good Morning America.

Video bonus bonus: For a less sentimental take of being a mom, here’s a “Motherhood Rap.”

More from Smithsonian.com

How Motherhood Makes You Smarter

Celebrating Motherhood in Pictures

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