Excuse Me, May I Have Your Seat? (The Other Milgram Experiment)

I find Milgram very interesting, but I've never heard of this particular experiment. What is really thought provoking to me is how social mores dictate behavior such as this.

In my home country of Croatia, for instance, it is completely normal to ask someone for their seat. If the person doing the asking is older, it's almost a given that the person being asked will give up the seat without much thinking or comments.

I wonder now: can a few thousand miles make such difference in personal interaction?

I get a login screen.

Can access it through Google though.