Political correctness was mentioned in the article:
> Typical campus discourse is often a minefield for newcomers, said a Norwegian student. “I find that Americans are generally very politically correct, and as a European, I think I’m used to being blunter and saying things right out. ..."
Politeness too. There are some cultures which are extremely blunt, no diplomacy or being indirect. For instance just going into a meeting and saying that someone's idea is dumb and they should do it X way instead. Most americans I know perceive this as "being a dick", but this is pretty normal discourse where they come from.
> Typical campus discourse is often a minefield for newcomers, said a Norwegian student. “I find that Americans are generally very politically correct, and as a European, I think I’m used to being blunter and saying things right out. ..."