On the differing-demographics question, it would be interesting to have some finer-grained data to look at some of those confounding issues. I can believe that

On the differing-demographics question, it would be interesting to have some finer-grained data to look at some of those confounding issues. I can believe that Americans and Western Europeans differ on some values, but they also differ considerably amongst themselves: the values of Brooklyn and suburban Houston are fairly different. Even just regional data could be useful to be a more accurate view.