Why can't science answer my parenting question?

by Anya Dunham, PhD

Three reasons why there isn't a science-based answer to every parenting question.

If you tend to turn to science when making parenting decisions, you will inevitably come across a question that research is unable to answer. And it's not necessarily a bad thing.

There are 3 main reasons for this:

1. The topic behind your question cannot be studied (for ethical or methodological reasons, or both).
2. The topic has not yet been studied enough.
3. The question is too contingent.

The first two of these reasons are pretty well known and intuitive. But the third one - parenting question being too contingent, too dependent upon specific circumstances - is, I think, less obvious. Let's explore this a bit.

When the process is tightly controlled by biology, knowing averages and ranges can be very helpful

Some numbers come are tightly controlled by biology. For example:

• baby growth percentiles
• typical age ranges babies are ready for solids
• age ranges babies commonly reach gross motor milestones

These numbers come from processes like growth or metabolism that are tightly controlled by biology, with strong feedback loops. As long as you remember to look not just at the average, but at the whole  - often wide - range, you can use these numbers as guideposts to gauge how things are going.

When there are more social factors than biological, averages and ranges are less helpful

But other numbers come with too many individual factors at play, many of which are social, not biological. For example:

• the probability of a repeat birth injury
• is multi-age home-based childcare better than center-based daycare
• the number of kids that makes the happiest family

Yes, it might be possible to find answers to some of these questions on a population level, and that’s very important for public health decisions. But these numbers may not be that useful to you as an individual as they may or may not reflect your particular situation well. The range around the average is often very, very wide, and where you land depends on your unique circumstances. It is often still good to know the range, but it's very important to consider your specific circumstances. (Side note: This is also the reason why many of the "best" parenting techniques don't work for your child.)

As another example, a baby’s growth – a tightly biologically controlled process – is going to differ from average only so much. But although where I live I have a 1-in-a-million chance of getting struck by lightning in my lifetime (in general), if today I am standing on top of a hill, in a thunderstorm, with a metal pole in my hands, my chances are much, much higher. And although the odds of a repeat severe tearing in childbirth are about 3% on average, an individual person’s unique circumstances might make it much higher.

BOTTOM LINE: if you're looking for answers to questions like "How/where should I give birth?" or "Where should my baby sleep when we travel?", please don’t hold on to the average, however comforting it may sound. Instead, seek and carefully consider information and advice for your specific, unique situation.

Do you find this distinction helpful? Do you have a parenting question that's difficult or impossible to answer by looking at the research? Let me know!

Using hundreds of scientific studies, Baby Ecology connects the dots to help you create the best environment for sleep, feeding, care, and play for your baby.

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Warmly,

Anya

Hi! My name is Dr. Anya Dunham. I'm a scientist with a PhD in Biology, an award-winning author, and a mom to three young kids. Here and in my book, Baby Ecology, I analyze the research on baby's first year to find the optimal nurturing environment — the (usually wide) range of good options — to help you choose what works best for your baby and your family. Let's find the answers to  your new parent questions that are too complex to google. 

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