double-blind meaning

Pronunciation:   "double-blind" in a sentence
  Denoting a comparative experiment or trial, etc in which the identities of the control group are known neither to the subjects nor to the experimenters

adjective [usually before noun]

used to describe a type of research that tests the effects of a new product, especially a new medicine. Neither the testers nor the people testing the product know who has received the real product and who has received a substance that does not contain any of it:

a double-blind trial/study

Where studies are not double-blind there is a risk that doctors will over-estimate the effects of treatment.


adj : of, relating to, or being an experimental procedure in which neither the subjects nor the experimenters know the identity of the individuals in the test and control groups during the actual course of the experiments —compare SINGLE-BLIND

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