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"he did not even try to confirm his preconceptions"nounan opinion formed beforehand without adequate evidencetype of:
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nouna partiality that prevents objective consideration of an issue or situationtype of:
Definition that contains preconception
- placebo effect 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