We all know yawns are contagious, right? It's been documented. Dogs, chimps and even parakeets have been seen passing a yawn. We've seen it ourselves. Right?

Maybe not. Psychologist Rohan Kapitany from University of Oxford put together a study using 79 college students (psychologists' favorite guinea pigs). They were put into four groups, all with headphones listening to Chopin -- with half of them blindfolded.

The longer the people sat, the more yawns occurred. BUT!! When the tapes were reviewed, Kapitany was surprised to see that there didn't appear to be a causal relationship, since the blindfolded people yawned just as much. "Further, and more robust research is needed," Kapitany stated with force.

Really? Instead I suggest we turn our attention to rebids by opener. A much more useful topic, don't you think?