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If you have a child under five, you already know the soundtrack of your day.
Why is the sky blue? Why do dogs sniff everything? Why can't I have ice cream for breakfast?
Why, why, why?
Somewhere between kindergarten and middle school, that soundtrack fades out.
Not because your child ran out of things to wonder about. Actually, the opposite is true. Something in how kids are taught and how their questions are quietly answered trains that instinct to go quiet, too.
This week, we're looking at what researchers have found about why kids ask so many questions early on, what happens to that habit once school starts, and the small, specific things you can do now to keep the "why" alive before the backpacks come out again.
Also in this edition:
🧠 THE THINK TANK: Cast your vote in this week’s poll!
The Questions Behind the Question
You've probably seen the number before.
Harvard child psychologist Paul Harris, in his research on how children learn from those around them, found that a child asks about 40,000 questions between the ages of two and five, assuming just an hour or so of real conversation with a caregiver each day. That's roughly 40 questions a day before your child has even learned to tie their shoes.
The volume is not the interesting part. Developmental psychologist Michelle Chouinard analyzed thousands of hours of recorded conversations between young kids and their parents, tracking not just how many questions kids asked, but what kind. What she found reframes the whole picture. The type of question matters far more than the number.
Early on, most questions are simple requests for a label. What's that? Where did it go? Your child is building a mental inventory of the world, one noun at a time.
But by around 30 months, something shifts. And by age 4, the majority of a child's questions seek an explanation rather than a fact. Kids start reaching for why and how questions, the kind that require real reasoning instead of a one-word answer.
Why does the moon follow the car? How does the dog know it's dinnertime?
These are not idle questions. They're your child building a working theory of how the world holds together.
That shift is a real marker of cognitive growth, not just a coincidence of growing vocabulary. Chouinard's research describes it as children hitting a gap in their own understanding, some inconsistency or surprise they can't quite explain, and using the question to close that gap on the spot. A child asking why the ice melted is testing a theory about cause and effect, not just collecting facts.
Long before anyone calls it critical thinking, the questioning habit is already doing serious, quiet work. Which makes what happens next even harder to watch.
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Why School Flattens the Habit
Here's the part that tends to surprise parents. Developmental psychologist Susan Engel of Williams College set out to study which classrooms did the best job encouraging kids to ask questions. She ended up abandoning that specific comparison because the rate of curiosity she observed was so low across every classroom she visited that there was nothing left to compare.
Her broader research found that question-asking peaks around age five, at roughly 100 questions an hour, then drops sharply once formal schooling begins, falling to just a handful of questions every couple of hours by the upper elementary years.
In one classroom Engel studied, a child asked something the teacher had not planned to address mid-lesson. The response was calm and completely unremarkable to the person giving it: not right now; we will get to that later. It happens dozens of times a day in dozens of classrooms, and the pattern adds up faster than anyone realizes.
It is not that kids stop wondering. Classrooms, by design, run on a different rhythm. There is a right answer, a limited amount of time, and a teacher moving twenty-five kids through a lesson plan together.
Raising a hand to ask something that veers off topic does not fit that rhythm, so kids learn quickly which kinds of curiosity are welcomed and which are gently redirected.
None of this is a knock on teachers, who are doing an enormously hard job on a clock, with a full room and a curriculum to cover before the bell. It is just worth naming plainly.
The habit of asking does not disappear because your child cares less. It goes quiet because the environment around them stops asking for it, one redirected hand at a time.
What Your Answer Actually Teaches Them
This is the part parents actually have real influence over. Researchers Brandy Frazier, Susan Gelman, and Henry Wellman studied how kids react to the answers they get, first by combing through recorded home conversations, then by testing the pattern directly with 42 preschoolers in a controlled setting.
In that second study, researchers introduced kids to small, strange scenarios, like a story about a girl pouring ketchup on her ice cream, and then gave carefully controlled responses to whatever questions came up.
Across both studies, the pattern held. When adults gave a real explanation, kids were significantly more likely to accept it or ask a genuine follow-up question, building on what they had just learned.
When adults gave a non-explanation, a deflection, or a vague non-answer, kids were more likely to just repeat the original question or invent their own explanation on the spot rather than let it go.
In other words, kids were not asking questions just to keep a conversation going or hold your attention. They were asking for an actual answer, and they could tell the difference between getting one and being brushed off.
None of this requires a parent who knows everything, which is good news on the days your child asks something you cannot answer.
"I'm actually not sure, let's find out together" counts as a real explanation in this research because it treats the question as worth pursuing rather than closing it.
It just requires treating the question as worth a real response rather than a quick one, even when a quick one would be so much easier in the moment.
We’re asking parents like you to share their thoughts on topics that matter each week! Cast your vote and see what others think! We’ll chat more about the results next week. 👀
Which is worse for curiosity:
Wonderopolis: A free daily "wonder of the day" built entirely around kid questions, with research-backed answers to things like why the sky is blue or how bees make honey.
National Geographic Kids: Deep, visual answers to the science and nature questions your child is already asking, built for curious young readers.
Until Next Week…
Curiosity is not something your child either has or loses. It is something that gets fed or quietly starved by the ordinary moments of ordinary days.
School will ask a lot of your child this fall. Making space now for a slower kind of answer might be exactly what keeps the questions coming once the backpacks are back on.
Thanks for joining us in raising kind, capable, and confident humans. We’re so glad you’re here.
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