Geoff, the quantum mechanic, inquires: Any of you out there know of research supporting this?

Well..... can't cite any scientific studies, but I know *some women who often use "yes" to mean "no" as in "Sure, I'd just love to go to the hockey game with you..." and "no" to mean "yes" as in, "Ahhh... you shouldn't have!" or "Don't go to any trouble" or in other situations that are not appropriate to this venerable forum.