Neuroplasticity does drop with age, but the drop is smaller than it was previously assumed to be, especially outside of early childhood (you may note that eg. this graph starts at 20 years old)
It helps a lot that they’re completely immersed in the language, by people who want to help them learn, and they desperately need to tell us things with no alternative.
But we know for a fact that plasticity does drop with age, that’s why it’s so difficult to learn foreign language after childhood.
Neuroplasticity does drop with age, but the drop is smaller than it was previously assumed to be, especially outside of early childhood (you may note that eg. this graph starts at 20 years old)
As far as I can tell. They have just drawn a line on a random distribution.
If it’s a random distribution, then we can’t say that neuroplasticity drops, either.
It helps a lot that they’re completely immersed in the language, by people who want to help them learn, and they desperately need to tell us things with no alternative.