Last night I caught the last fifteen minutes of 'Night Waves' on Radio 3, where the interviewer had a spot with US Professor of Psychiatry, Bruce E. Wexler, discussing his book Brain and Culture
Wexler's theory is that as the brain develops in youngsters neuron connections are forged and reforged as a byproduct of environment, and cultural forces around us. As we approach adulthood, our internal environment becomes fixed, thus making it harder for us to adapt to changes in the external environment. He argues for one thing, that this could contribute to culture clashes, where one cultural group does not understand another.
I know I'm simplifying things here immensely, but Wexler's book sounds really interesting. One for the reading pile after my courses end in October!