The 3-6-9-12 rule, and other screen rules parents swear by

The 3-6-9-12 rule is four doorways for screens, proposed by the French psychiatrist Serge Tisseron in 2008: no screens before 3, no personal games console before 6, the internet with an adult from 9, and alone from 12. It is a framework, not a finding. Its first doorway is the one the strongest research agrees with.

Every parenting group has a moment where someone asks about screens and the replies fill with numbers. Follow 3-6-9-12. We do the one-hour rule. Have you tried 20-20-20. The rules travel fast because they are easy to remember, which is not the same as being true. Here is what each one actually says, where it comes from, and which ones deserve a place on your fridge.

Where does the 3-6-9-12 rule come from?

Tisseron built the markers around four doorways in a child's life: starting nursery, starting school, reading and writing alone, and starting secondary school. The idea was to give parents a better question than how many hours. The question becomes: is my child ready for this kind of screen yet? He has since revised the later doorways on his own site, which tells you how to hold any rule of this kind. It is a starting point, not a law. The first doorway, no screens before three, is the part that has aged best, because it is the part the medical bodies agree with.

What do the WHO, the IAP and the AAP actually recommend?

Three bodies have written this down, and they agree with each other more than the parent groups do. The World Health Organization says no sedentary screen time at all for one-year-olds, and no more than one hour a day for children aged 2 to 4, adding the three words that matter: less is better. The Indian Academy of Pediatrics, writing for Indian homes in 2022, says no screens below two years, at most one hour of supervised screen time a day from two to five, and under two hours a day from five to ten. The American Academy of Pediatrics lands in the same place for ages 2 to 5: about an hour a day of good content, watched together when you can.

Notice what all three do with the hour. They spend less of the page on the number and more on what the hour replaces. The worry is not the screen. It is the sleep, the running, the play, and above all the talking that a screen quietly eats. An hour of cartoons in a day full of conversation is a different thing from an hour of cartoons in a day of silence.

Is the one-hour rule enough on its own?

The one-hour rule is the short version of those three guidelines, and it is the rule with the most evidence behind it. On its own it is a fence. What matters is the field inside it. The AAP adds three habits that turn the hour into something useful: choose slow, simple programmes over fast ones, watch together and talk about what you see, and do not let a screen become the only way to calm your child down. A cartoon you talk about together is closer to a conversation than to a screen.

What about 20-20-20?

Every 20 minutes, look at something 20 feet away for 20 seconds. This one is about eyes, not development. It is sensible for anyone who reads on a screen, including you, and it says nothing about how much a three-year-old should watch. Keep it, but keep it in the right drawer.

Which rules have no source at all?

You will also meet the 3-3-3 rule and the 7-7-7 rule, which mean something different in every post that mentions them. When a rule has no stable meaning and no author, treat it as a costume that folklore wears. You do not need it. The principles underneath every good rule fit in one sentence: less is better under five, together beats alone, and conversation is the thing screens quietly eat.

So which rule should our family keep?

Pick the one you can actually hold. A rule kept loosely for a year beats a strict one abandoned by Thursday. If you want a single line for the fridge, take this one: under five, one hour at most, watched together, and never in the hour before bed. That is the WHO, the IAP and the AAP in one breath, and Tisseron would not argue with it. Our own plain-words read on the guidance is how much screen time is okay for a young child.

And if the hardest part is what fills the quiet after the screen goes off, that is the exact gap we built Kheelu for: a screen-free friend that talks, tells stories, and asks your child questions back. Pre-orders are open, and the ₹499 that holds your place comes back in full if you change your mind.