I think it's hilarious that when I'm working in my cubical I can hear the student assistants chattering away like magpies on the other side of the cube wall. The instant I step out of my cube and round the corner into their workspace they get deathly quiet. It's like they think if they can't see me, I can't hear them or something. haha
Anyway, it's not like we've ever told them they can't chat while they work. We're not ogres.