Jon Johanning wrote:
>
> but I suspect
> genetics also has something to do with it. Probably there hasn't been
> any research on this as yet, given the great difficulty so far of
> linking up genetics with psycholog.
>
It is difficult because it simply isn't true except in the most trivial or tautological ways. Worrying about the relationships of genetics and psychology simply diverts mental activity to dead end research. And moreover, those "ways" are almost always reactionary ways.
Carrol