I’m now 31 weeks pregnant. The weeks are flying by, and for the most part, I’m relishing all the physical changes in my body and the preparations for this baby. We waited a long time for this pregnancy, and it will probably be my last. I curl around my belly at night and think about the baby growing inside me. I wonder about the person that he or she will become and how our little family will adapt to welcome a second child. (We’ve chosen not to learn the sex of this baby until its birth.)
When I was pregnant with Cee and about to become a mom for the first time, I thought a lot about what kind of mother I would be and how this big life transition might alter my identity, my career path, my marriage, and my daily life. The baby-to-be was kind of a vague amalgamation of all the babies I’d known.
This time around, having been around many more babies, I recognize the individuals that babies are from the first days of life – and even in utero – and I spend a lot more time wondering about this baby’s temperament and personality. Introverted and contemplative, like Cee? Or totally different?
Filling me with wonder, this baby moves around in utero a lot, and this feels very different from my experience carrying Cee. I didn’t feel movement from Cee until around 23 weeks, but I began to feel this baby move at 16 weeks. And this baby continues to be very active, more than I remember with Cee, especially making big, dramatic movements in the evening hours but also having significant activity bouts throughout the day (and sometimes in the middle of the night, of course).
Because we don’t know the sex of this baby, I’m often asked if I have any predictions on that front. How would I know, I think? I don’t feel like I have any kind of gut instinct for this kind of thing, and I don’t buy into any of the old wives tails. But if I’m pushed to make a guess, I guess that this baby is a boy. And when I ask myself why that is, it comes down to this observation about more fetal movements. This baby feels different from Cee, and my brain makes a jump to sex as a possible explanation. And then I stop, remind myself that I’m perpetuating a total gender stereotype, and feel embarrassed.
One day, I repeated all of this to a friend as we walked together (complete with an apology for the gender stereotype), with Cee riding her bike within hearing distance. A couple of weeks later, my mom was talking to Cee on the phone and asked her if she thought the baby would be a boy or a girl. Cee answered in what seemed like a verbatim copy of my own explanation: “Well, Mom thinks that it’s a boy, because the baby moves around a lot inside of her, and I didn’t move very much.” Yikes. From now on, I’m keeping my mouth shut. And for the record, Cee is really hoping for a little sister.
All of this left me wondering if fetal movements can actually predict anything about the baby, whether sex or temperament, in postnatal life. I happened to be corresponding with Jena Pincott, author of Do Chocolate Lovers Have Sweeter Babies?, a few weeks ago, and I asked her if she knew of any research on this. She wrote back, “As for ‘in utero’ forecasts, my prediction is that your 2015 is going to be very, very busy!” and sent me a few research articles. I dug around and found quite a few more studies of this question. Finally, I could stop speculating and start talking science! Here’s what I found:
How is this question studied?
Most studies use ultrasound or a Doppler transducer placed on the mother’s belly to measure fetal movements. Most are conducted over a period of about an hour, during which the moms are asked to rest, and the best studies take several of these measurements over the course of the pregnancy. Studies of postnatal temperament then use standardized behavioral observations or questionnaires to describe aspects of the baby’s behavior.
Is it true that some fetuses are more active than others?
I wondered if my perception that I was carrying a more active fetus is this pregnancy was really true or if it was influenced by other factors? Continue reading