Cribsheet: A Data-Driven Guide to Better, More Relaxed Parenting, from Birth to Preschool

So let’s start by just framing this not as “What kind of mom will you be?” but “What is the optimal configuration of adult work hours for your household?” Less catchy, yes, but also perhaps more helpful for decision-making.

But the world is oddly lacking in discussions of what happens, physically, to Mom after the baby arrives. Before the baby, you’re a vessel to be cherished and protected. After the baby, you’re a lactation-oriented baby accessory.

First, recognize that children are not adults, and you usually cannot improve their behavior with a discussion. If your four-year-old is taking their shirt off in the museum, they will not respond to a reasoned discussion about how you actually do need to wear a shirt in public places. The flip side of this - more important - is that you shouldn't expect them to respond to adult reasoning. And as a result, you should not get angry the way you would if, say, your spouse was stripping in the museum and didn't stop after you explained why they shouldn't. Toddler discipline is, really, parental discipline. Breathe. Take a second.

The physical and emotional challenges of work pale in comparison to the physical and emotional challenges of being an on-scene parent.

I’ll say it: I am lucky enough to not have to work, in the sense that Jesse and I could change how we organize our life to live on one income. I work because I like to. I love my kids! They are amazing. But I wouldn’t be happy staying home with them. I’ve figured out that my happiness-maximizing allocation is something like eight hours of work and three hours of kids a day. It isn’t that I like my job more than my kids overall—if I had to pick, the kids would win every time. But the “marginal value” of time with my kids declines fast. In part, this is because kids are exhausting. The first hour with them is amazing, the second less good, and by hour four I’m ready for a glass of wine or, even better, some time with my research. My job doesn’t have this feature. Yes, the eighth hour is less fun than the seventh, but the highs are not as high and the lows are not as low. The physical and emotional challenges of work pale in comparison to the physical and emotional challenges of being an on-scene parent. The eighth hour at my job is better than the fifth hour with the kids on a typical day. And that is why I have a job. Because I like it. It should be okay to say this. Just like it should be okay to say that you stay home with your kids because that is what you want to do. I’m well aware that many people don’t want to be an economist for eight hours a day. We shouldn’t have to say we’re staying home for children’s optimal development, or at least, that shouldn’t be the only factor in the decision. “This is the lifestyle I prefer” or “This is what works for my family” are both okay reasons to make choices! So before you even get into reading what the evidence says is “best” for your child or thinking about the family budget, you—and your partner, or any other caregiving adults in the house—should think about what you would really like to do.

We know being a parent means getting a lot of advice, but this advice is almost never accompanied by an explanation of why something is true or not, or to what degree we can even know it’s true. And by not explaining why, we remove people’s ability to think about these choices for themselves, with their own preferences playing a role. Parents are people, too, and they deserve better.

It isn't that I like my job more than my kids overall --if I had to pick, the kids would win every time. But the "marginal value" of time with my kids declines fast. In part, this is because kids are exhausting. The first hour with them is amazing, the second less good, and by hour four I'm ready for a glass of wine or, even better, some time with my research. My job doesn't have this feature. Yes, the eighth hour is less fun than the seventh, but the highs are not as high and the lows are not as low. The physical and emotional challenges of work pale in comparison to the physical and emotional challenges of being an on-scene parent. The eighth hour at my job is better than the fifth hour with the kids on a typical day. And that is why I have a job. Because I like it.

These books, which cover many of the topics discussed in this book, may be helpful further reading. GENERAL REFERENCE American Academy of Pediatrics. Caring for Your Baby and Young Child: Birth to Age Five. New York: Bantam, 2004. Druckerman, P. Bringing Up Bébé: One American Mother Discovers the Wisdom of French Parenting. New York: Penguin, 2014. Eliot, L. What’s Going On in There?: How the Brain and Mind Develop in the First Five Years of Life. New York: Bantam, 2000. Nathanson, L. The Portable Pediatrician for Parents: A Month-by-Month Guide to Your Child’s Physical and Behavioral Development from Birth to Age Five. New York: HarperCollins, 1994. DISCIPLINE Phelan, T. W. 1-2-3 Magic: Effective Discipline for Children 2–12. Naperville, IL: ParentMagic, Inc., 2010. Webster-Stratton, C. The Incredible Years: A Trouble-Shooting Guide for Parents of Children Aged 2–8. Toronto: Umbrella Press, 1992. SLEEP Ferber, R. Solve Your Child’s Sleep Problems. Rev. ed. New York: Simon & Schuster, 2006. Karp, H. The Happiest Baby on the Block: The New Way to Calm Crying and Help Your Newborn Baby Sleep Longer. Rev. ed. New York: Bantam, 2015. Weissbluth, M. Healthy Sleep Habits, Happy Child: A Step-by-Step Program for a Good Night’s Sleep. 4th ed. New York: Ballantine Books, 2015. POTTY TRAINING Glowacki, J. Oh Crap! Potty Training: Everything Modern Parents Need to Know to Do It Once and Do It Right. New York: Touchstone, 2015.

Swaddling has been shown to reduce crying and improve sleep. It is important to swaddle in a way that allows the baby to move its legs and hips. Colic is defined as excessive crying. It is self-limiting, meaning it will stop eventually. Changing formula or maternal diet, treatment with a probiotic, or both have shown some positive impacts. Collecting data on your baby is fun! But not necessary or especially useful. Exposing your infant to germs early on risks their getting sick, and the interventions for a feverish infant are aggressive and typically include a spinal tap. Limiting germ exposure may be a good idea, even if just to avoid these interventions.

The authors suggest that if what you care about is when potty training is done, there is not much point to starting before twenty-seven months or so. But it is the case that after this, starting earlier does generally mean finishing earlier. If you start training at twenty-seven or twenty-eight months, you can expect to be done by around age three, but it will take ten months to do it. If you start at age three, you finish later, but it’ll likely take you less than six months to fully train.

What we can see is that the age of potty-training completion is similar starting anytime between twenty-one and thirty months.

The MB-CDI is administered to parents (Want to do it yourself? See the endnotes).[2]

The study’s authors noted that the most significant predictor of both how many words the children spoke and how fast their vocabularies grew was whether their parents read them books.

They recommend no TV or screen time at all for children under eighteen months

There are some references in the back; my favorite is The Portable Pediatrician for Parents by Laura Nathanson.

Kids younger than school age get an average of six to eight colds a year

It is important to introduce some milk-based foods—yogurt

They found that children who ate a varied diet—and in particular those who consumed a wide variety of fruits and vegetables—at nine months were also more likely to eat a varied diet with vegetables at age six.

All this is to say that sleep training is likely to be more hit-or-miss for naps than at bedtime.

Regardless of what childcare you choose

Having books in your house and reading them to your kid is going to matter much more than what books they have at day care.

More months in day care before eighteen months are associated with slightly lower cognitive scores by four and a half years old

Why would Wakefield do this? It turns out he was planning a lawsuit against vaccine manufacturers

The books generally note that around six weeks

In the crib: Wearable blanket: check!

The medical recommendations to avoid SIDS have four components. Infants should be (1) on their back

The AAP says infants should sleep alone in a crib (or bassinet) and should be placed in the crib on their back to sleep. There should be nothing in the crib with the baby.