[livi]

Kurt,

I agree in the sense that a child will to a certain degree adopt /copy /learn a behavioral pattern, rules and social manners according to the nearest family members.

When I say biology have a strong impact on the variance, I refer to a somewhat deeper level of personality traits. The immediate environment will of course be able to modulate and 'shape' the 'original settings'.

This is in fact a very intricate and difficult subject with a lot of diverging study results that need a subtle hand when interpreting the outcome. Confounding factors are abundant, to say the least!