The Science of Communication - Is the Hand on the Arm Guided?

i first heard about this in a front line documentary called prisoners of silence that i watched part of for a psychology class in college. And it was structured just like this, where they showed all the amazing leaps forward and the weeping, grateful parents and the families that had been brought together. And then it was like and here come the scientists and the whole thing. Because the whole thing appeared to operate on the principle of the idio motor effect,. The same thing that powered planchet seances and wegi boards, right over a hundred years.