This is interesting. I think family only plays a certain extent
on moulding and shaping you, but external factors like friends,
study environment etc play an important role too.
I say that because my brother and I grew up in the same home
enviroment, and my parents treated us with the same fairness. They
are both English speaking and only picked up Mandarin when we went
to primary school.
We went to the same kindergarden and same primary school, though
secondary school environment onwards is different.
Anyway, the thing is that, my brother is more comfortable speaking
in Mandarin and has more 'Chinese' Values than I do, in customs, in
thoughts, actions etc, whereas I'm so called more 'Westernized'.
This differs to the type of music he listens too, programs he
watches etc.
Therefore, I would say that external factors like friends and
environment do play a pretty major role as well
