Is the person more intelligent because of the office.
Or are persons in offices just happen to be smarter than those in cubicles. (Excluding, of course, those related to the CEO).
I seriously doubt that is the office that gives intelligence.
At my office the Technology division (i.e research) has offices while the rest have cubicles. We have been lucky to keep the offices since the building hasn't been refurbished since the 60's if not earlier. A while ago they drew up plans to put us all in the same building. The only way to get an office without being a manager was to work on classified material