I think this stuff is pretty much set in their personalities when they are young like under 10.
If they are in supportive environments, if they don’t drop out between 10 and 20 for some distressing family life or other oppressive thing then they will hold onto the momentum. It’s something they need to do like breathing.
All my kids are wonderful, of course, but they are different in levels of curiosity and topics of curiosity and things that make them tick in general…
They are different in their levels of willingness to do mental work and physical work.
One is very energetic with academics , but not a good worker on chores, Doesn’t even appreciate what other people do physically, he’s too good for that. Since he is scoring almost sophomore college level in reading in the 5th grade,and is doing all-around great in school, I am o.k. with it ..mostly. I worry about his health from being prone to sedentarism.
One boy works hard on chores and although doing pretty well in school, with the top three kids in his gate class he really isn’t very motivated and is a great worker outdoors and pretty physical in general.
The third boy is very good at both academics and general level of being physical, most of the time…can clown around a bit at home during chores, but is very curious about everything and works hard in a very natural way. Great little student. Most prone to autodidactism and experimentation.