I observe that anglo-saxon peoples teach their kids to voice their concerns, needs, wants, and opinions, and to expect (!) results from this. (Compare how american kids behave at airports, train station, and public places with kids from other countries, e.g. french speaking countries).
This helps them approach situations in life with a healthy dose of self-worth and the baseline state of mind that if something is wrong it's not their fault.
In contrast, many other cultures teach their kids that it is impolite/crude/disrespectful to bother adults with your half-baked thought, or (God forbid) unexpected wants, or complaints.
I come from a culture where you are expected to moderate your verbal output when addressing your superiors (e.g. teachers, boss, etc.). You speak out only when you have something worthy to say.
Example:
I had trouble going to "office-hours" when at university in North-America. I always got the feeling that I am bothering the prof, and it is my duty to study more to understand the material, and I should not take his time when I merely did not understand something.
My anglo colleagues seem to not have such qualms. Their thinking is more along the lines of "I don't understand (not my fault), it is his job to teach me (most likely his problem), he has to explain this better, I pay for tuition after all...".
I am happy to have unlearned some of the above things.
But generally, I find the speak-your-mind-at-the-white-board-while-we-watch interview tailored for cultures where kids are taught to be vocal, and are difficult for equally intelligent people from other backgrounds.