any effect that seems to be a consequence of administering a placebo; the change is usually beneficial and is assumed result from the person's faith in the treatment or preconceptions about what the experimental drug was supposed to do; pharmacologists were the first to talk about placebo effects but now the idea has been generalized to many situations having nothing to do with drugs
a reaction by a patient who receives a placebo, in which the symptoms of illness are lessened or an anticipated effect is experienced. Because the placebo itself has no pharmacological activity, this reaction is mediated by the expectations of the patient receiving the placebo; the reaction is considered as an example of the power of suggestion. Dramatic subjective effects such as relief of discomfort or pain are sometimes observed due to administration of a placebo, but in some cases measurable physiological effects may also be observed.
The tendency of any medication or treatment, even an inert or ineffective one, to exhibit results simply because the recipient believes that it will work.
U.S. National Library of Medicine
An effect usually, but not necessarily, beneficial that is attributable to an expectation that the regimen will have an effect, i.e., the effect is due to the power of suggestion.
The numerical value of placebo effect in Chaldean Numerology is: 8
The numerical value of placebo effect in Pythagorean Numerology is: 9
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"placebo effect." Definitions.net. STANDS4 LLC, 2017. Web. 25 Nov. 2017. <http://www.definitions.net/definition/placebo effect>.