3. What-if thinking
Starting an imaginary idea is one skill. Sustaining it is another.
Imaginative elaboration, the capacity to develop a creative idea over time rather than just initiate one, builds steadily across childhood and produces qualitatively different thinking at each stage.
2 to 3 years
"I'm a dog. Woof."
Simple role adoption. A single idea, briefly held. The imaginative scenario starts and ends in the same moment.
3 to 5 years
"I'm a dog and I live in that house and you have to bring me food or I'll bark."
The scenario gains rules, a setting, and a relationship. It sustains across several minutes of play.
5 to 7 years
"What if every building in the city was actually a spaceship and nobody knew? Where would they go? Who would find out first?"
The what-if generates implications, characters, and a chain of consequences. The child tracks multiple threads simultaneously.
7 to 10 years
"I'm writing a series. There are seven books and the main character doesn't know she has a twin until book four."
Extended narrative planning. The imagined world has internal consistency, a timeline, and consequences that carry across sessions.