It was good to hear Michael Tymn speak ... I have encountered his name often when searching for information on internet and elsewhere etc.
Tymn suggested keeping the experimental group positive (keeping a happy medium?

) ...as there is no reason to assume telepathy (with living or discarnate) must work like a private communication, that sounds sensible... it also raises the question ...
Should the mediums do the trial before or after the sketpics?
In the CIA/US military remote viewing experiments, some researchers reported a 'telepathic overlay' where one could pick up another persons false ideas about a remote viewing target, that are not necessarily the target ... *if true* .... it might be better for mediums if the mediums go first?
Similarly Sheldrake's Morphic Resonance/Formative Causation hypothesis suggests we are responding to others people's habitual patterns of thought too. This *might* imply skeptics going first would confuse associations ... of course if mediumsgo first it might also help the later skeptics slightly?
I don't know .... just a thought.... I suppose it is up to the mediums.... assuming they actually know how they do it.