Perhaps. But then we get into whether our personalities or certain personality traits are nature or nuture. I am a strong believer that it is both - and in many cases, nature is much more strong than nurture. Determination, focus, hard work, etc. are just as likely to be a product of inherent ability than conditioning.
I agree that it is both, and there is an interaction between them.
I agree.
This is the nostalgia effect. When was there a time when authors in their 60, when writing about the young men in their day, talked about about how responsible they were?