In research currently undertaken, they triple blind if possible – what we believe gets in the way . ..

so there is a patient, a therapist and the data collector.

All who will have beliefs/energy on the outcome – and maybe can alter this . .

“The physician’s belief in the treatment and the patient’s faith in the physician exert a mutually reinforcing effect; the result is a powerful remedy that is almost guaranteed to produce an improvement and sometimes a cure.”

— Petr Skrabanek and James McCormick, Follies and Fallacies in Medicine, p. 13. Found on http://www.skepdic.com/placebo.html