There has been a lot of research into
Nature Versus Nurture. There are some
things that people are just borne with.
There are some things that people pick
up as they go along.

Recently I have taken two childhood
development classes. They both put forth
the idea that the basic personality of a
person was influenced about 50-50 by
nature and nurture. Two very basic
things, how a baby formed bonds with its
primary care giver and how a child's
disposition were formed, have been
shown to be innate in the child at birth.
And then the child begins being
influenced by the environment.