culture shock imperialism ethnocentrism xenocentrism

Rodney and Elise are U.S. students studying abroad in Italy. When they are introduced to their host families, the families kiss them on both cheeks. When Rodney’s host brother introduces himself and kisses Rodney on both cheeks, Rodney pulls back in surprise. Where he is from, unless they are romantically involved, men do not kiss one another. This is an example of: