“Placebo effects (plural) are mostly reporting bias, regression to the mean, investment justification, researcher bias, and other sources of self-deception. They are transient, and significant only for subjective symptoms where reporting bias can play a major role. Studies have shown, in fact, that there is no significant "healing" that occurs due to placebo effects — no objective biological improvement.”

NeuroLogica Blog, Can Thinking Change Reality Part II http://theness.com/neurologicablog/index.php/can-thinking-change-reality-part-ii/ (March 11, 2014)

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Steven Novella 20
American neurologist, skepticist 1964

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