I suggest that causation operates via the very real change impact on motivation and the willingness to change one’s identity. 18 years of dedicated practice is enough time for nearly anyone to become an expert in nearly anything to a far greater degree than mere competence.
Studies find that adults actually learn languages faster than children do and older children faster than younger. Here is a more subtle investigation of how the motivation of adults interacts with circumstance and language in natural circumstances.
I suggest that causation operates via the very real change impact on motivation and the willingness to change one’s identity. 18 years of dedicated practice is enough time for nearly anyone to become an expert in nearly anything to a far greater degree than mere competence.
Studies find that adults actually learn languages faster than children do and older children faster than younger. Here is a more subtle investigation of how the motivation of adults interacts with circumstance and language in natural circumstances.