Localization. It's Big in Japan
http://www.usabilityprofessionals.org/upa_publications/upa_voice/volumes/2007/june/localization.html

Malcolm, Casey
Usability Professionals Association
2007

Abstract:

How do you carry out usability research in a country where you don't speak the language and where the customs are very different from you own? How can you perform a study where you need to largely rely on an interpreter for communications between you and your participants? And most importantly, how do you translate research findings into a design that is culturally appropriate and yet in alignment with corporate directives?