"In the light of the results obtained, the researchers remarked on the significant "placebo effect" that healers have on people,
"though some healers really have the ability to see people's 'auras' and feel the pain in others due to synesthesia."
Some healers "have abilities and attitudes that make them believe in their ability to heal other people,
but it is actually a case of self-deception, as synesthesia is not an extrasensory power,
but a subjective and 'adorned' perception of reality," the researchers state."
http://www.sciencedaily.com/releases/2012/05/120504110024.htm