You separate physiology and psychology? interesting.Well I'm not at the point where through thought alone I can thwart the knee-tap-kick reflex, or adjust the size of my pupils at will. Or sneeze.
I agree it's a spectrum rather than a clean compartmentalisation, however I assume the use of those words which lie at different points on the spectrum indicate a bias/weighting in those directions.
Further, I wouldn't think it 100% psychological, just as the patting/rubbing head and tummy thing isn't 100% psychological. In both the tendency is for the brain to send 'similar' signals rather than different ones to two active bits at once. Either concentration or practice will overcome this. In the example here, when I tried it, I simply concentrated and it worked fine. I fear that you might be reading 'psych' into something that may well not be as simple as you think.Initially I couldn't do it no matter how hard I concentrated. Then I decided to believe that it was an elaborate hoax, and I could immediately do it without concentrating, or with.
To me that screams psych.
I'm also not sure what you mean by "hoodwinked 100% of the ... regulars here".Ah, still playing the "ass", sorry. If one pretends for long enough, there loses all distinction.