Take transcripts of what happens with young children in classrooms and other settings, and code them for instances of curiosity, whether spontaneous or encouraged. You find a dramatic change in the classroom -- even greater than I expected; I seem to have lucked out in my own schooling. https://www.amazon.com/Hungry-Mind-Origins-Curiosity-Childho...

(Where "lucked out" doesn't mean it was worth it. It's relative.)