"My teenager has no interests." They do. Here is how to find them.

Attention leaves evidence. Where does your child's time actually go when nobody is directing it? What do they return to unprompted after a gap? What do they know a strangely large amount about, given that nobody taught them? What makes them lose track of time, and what makes them talk faster?

Then look underneath the surface activity, because the activity is rarely the interest. A child who spends hundreds of hours building in a game may be interested in systems, or in making places, or in the small economy of trading with other players. A child glued to a football league may be interested in statistics, or in narrative, or in belonging to something with a history. A child who will not stop arguing may be interested in fairness. The underlying thing is portable. The game is not.

I taught a boy whose reading was well below his grade level, in a language that was not his first. On paper he was a child with a problem. What he actually had was Dungeons and Dragons, which no adult in the building would have written down as an interest. He decided to write a fantasy book built on it.

Nobody assigned him extra reading. He read because the book required it, and he wrote every day because the book was his. Some months later his mother came to find me to say that this project was the thing that turned him around. He finished the year reading and writing above grade level, in his second language. The intervention that worked was a game his teachers had been quietly hoping he would grow out of.

Ask these in an ordinary moment, in a car or a kitchen, never across a table in a conversation that has been announced. One question per sitting is plenty.

What do you keep going back to when nobody makes you? What annoys you about where we live? Who around here does something you find slightly fascinating? If you had to make something in a month that a stranger could see, what could it be?

Two rules make or break this. Do not evaluate the answer, even with a compliment; a fourteen year old hears praise as pressure and shuts the subject down. And do not follow up with a suggestion. The silence after their answer is where the thinking happens, and parents almost always fill it.

Parents brace for a grand direction and get something like: the stray cats behind our building, or the fact that nobody at school knows how to fix anything. That is not a disappointing answer. That is the actual shape of a real start. Every long body of work I have watched a young person build began at exactly that scale, and the ones that began grand almost all collapsed inside a term.

A child who cared about the walls of his old village ended up speaking at town meetings and, years later, at a leading art school. He did not start with a cause. He started with a wall he walked past. The scale grows on its own if the thing is really theirs; it never grows if it was yours.