I'm a teacher; 16/17 year olds will hop between interfaces with very different logics/metaphors with ease. For example, a desktop PC with Win7, an iPhone and an Android tablet.

I might try putting a recent Gnome on my test laptop and seeing what they can do with it as we go into revision for exams. As I use old X series Thinkpads, I'll need to bring a mouse. The trackpad is always the thing people find hardest!

Does anyone have references to any user testing of Gnome Shell as it was quite a fresh approach when it came out?