Continuous Partial Attention? Try maintaining any attention when you have this blared out from overhead every three minutes:
Im Selfimportant, you have a call parked on 666. Im Selfimportant, 666 please.
I'm a "knowledge worker." I don't appreciate a voice interrupting my thoughts all the sodding time. I'm scatterbrained enough as it is, but I feel like Harrison Bergeron some days. It's usually a call for someone in Sales or Support anyway; why the fuck not forward the caller to their bloody cell phone, instead of blasting the grating voice of the receptionist to everyone in the building?