From KENNETH HOOTON
B. Marsh hypothesises that yawning ‘is initiated by inequality brought
on by atmospheric pressure changes’ (Letters, 19 October). For over 30 years,
my wife and I have been ‘tapesponding’ with relatives and friends around
the world. To us, and all our tapespondents, it is our experience that hearing
someone yawn during a taped message made weeks before and thousands of miles
away can and does cause listeners to yawn. Would someone like to hypothesise
on that?
Kenneth Hooton Phoenix, Arizona, US
