The rule is not about minutes but about company: if it is on, someone is watching it with them, talking about it, pausing it. This is the position with the best empirical support in the whole instrument — joint media engagement is where the language-learning findings come from — and also the most expensive in adult time, which is why few households run it past the toddler years.
What it asks of you
- Your actual presence, which is the entire method and cannot be delegated to the screen
- Giving up the thing screens are most often used for — a gap in which to do something else
- Watching a great deal of children's television
One number, applied daily, and inside it the child chooses. The trade is deliberate: you give up control of content in exchange for a limit that needs no judgement, no negotiation and no daily re-litigation. It is the easiest approach to run consistently and the one most likely to be undermined by the fact that twenty minutes of a maths game and twenty minutes of autoplay are not the same twenty minutes.
What it asks of you
- Holding the number on the evening when an extra ten minutes would buy you peace
- Accepting that a timer cannot tell the difference between two very different hours
- A timer, a rule about who starts it, and an answer for what happens mid-episode