Why a story beats a recommended video for a curious child

Let us start with the honest part. A story is not automatically better than a video. A good video watched together with a parent can be wonderful, and a bad story is still a bad story. So the title of this post is a claim about one specific situation: a curious child asks a question, and a grown-up has to choose between a recommended video and a story told for that question.

Here is what published research says that bears on that choice, and where it stops.

What the studies found

A short burst of fast cartoon. Angeline Lillard and Jennifer Peterson ran an experiment published in Pediatrics in 2011. After 9 minutes of a fast-paced cartoon, 4-year-olds did worse on executive-function tasks (the skills behind focus and self-control) than children who had drawn or watched an educational show. The paper is available here. It measured a short-term effect, right after viewing, and it was about one kind of cartoon. It does not say what happens over months.

Where recommendations lead. Kostantinos Papadamou and colleagues studied videos aimed at young children on YouTube. In their 2020 paper "Disturbed YouTube for Kids", a toddler who keeps following the recommended videos had about a 3.5% chance of meeting an inappropriate one within ten hops. The paper is here. That is one platform, one method, one moment in time. It is not a verdict on every video service, and a child who is watching with you, or watching a video you chose, is in a different situation.

What children want from an answer. Brandy Frazier, Susan Gelman and Henry Wellman found in 2009 that preschoolers were more satisfied by explanatory answers, and more likely to ask again after answers that did not explain. A summary is here. It is a study of how young children respond to answers, not of any app.

Screens and the brain. Hutton and colleagues, in JAMA Pediatrics in 2019, scanned the brains of 69 preschoolers. More screen use went with less developed white matter in areas that support language. A news summary is here. This is an association, not a cause. Families who use more screens differ in other ways too, and the study cannot say which came first.

What none of this proves

None of these studies tested Curio, or told stories, or audio. They are about children and screens in general. We looked for solid evidence that listening to audio improves a child's brain development and did not find any, so we do not claim it, and neither should anyone selling you a podcast.

Taken together the studies do not prove that a told story is better for learning. They give a few reasons for caution about open-ended feeds, and a reason to take a child's "why?" seriously.

What a story can give a curious child

With those limits in mind, here is the practical case.

• It answers the question that was asked. A recommended video follows what an algorithm thinks will keep a child watching. A story made for "Why does the moon change shape?" is about the moon.
• It ends. A story has a beginning and an end. There is no next video queued up behind it, so the end is a natural place to stop, talk and wonder.
• It leaves the eyes free. A child can listen while drawing, building, riding in the car or lying in the dark. Parents can listen too, and join in.
• It explains. A good true story does not say "because it just is." It tells how and why, which is what the preschoolers in the 2009 study seemed to want.

Where a video is still the right call

Some things need pictures: how to fold paper, how a surgeon's hands move, what the surface of Mars looks like. A video you chose, watched together, is a fine tool. The point is not to ban screens. It is to have another option for the many moments when a child asks a question and nobody has an answer to hand.

How Curio fits in

Curio turns a question into a short true story, narrated as a podcast of 3, 6 or 10 minutes. There are no ads inside, a safety screen runs on every topic before anything is made, a grown-up PIN protects settings and purchases, and each child has their own profile. When the story ends, it ends.

Curio makes no health or learning promises. It is made with AI, so a podcast can still contain a mistake, and we would like to hear about it if you spot one. If you want to see how a podcast gets made, read How Curio makes a podcast from a question.

Sources

• Lillard and Peterson, Pediatrics, 2011: The immediate impact of different types of television on young children's executive function.
• Papadamou and others, ICWSM, 2020: Disturbed YouTube for Kids.
• Frazier, Gelman and Wellman, 2009: preschoolers and explanatory answers (ScienceDaily summary).
• Hutton and others, JAMA Pediatrics, 2019: screen use and white matter in preschoolers (news summary).

All four are about children and screens in general. None of them is a test of Curio.