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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.
Steven Novella
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Good authors, too, who once knew better words Now only use four-letter words Writing prose — Anything goes.
Cole Porter
Steven Novella
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Born:
July 29, 1964
(age 60)
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