[psychtracker]

Not sure if you can gleam any great insights into that mini-experiment. I watched a bit of it on live feed, and they knew he was acting a bit weird, or up to a secret task...coz he kept mentioning - am i boring you etc... Corin & Steve where certainly just playing along with him - and gave a "token" yawn. Obviously yawning also varies on tiredness, warmth, lack of oxygen to the brain etc... Also, roughly half the population do not yawn contagiously.