double-blind


dou·ble–blind

adjective \ˌdə-bəl-ˈblīnd\

—used to describe an experiment that is done so that neither the people who are doing the experiment nor the people who are the subjects of the experiments know which of the groups being studied is the control group and which is the test group

Full Definition of DOUBLE-BLIND

:  of, relating to, or being an experimental procedure in which neither the subjects nor the experimenters know which subjects are in the test and control groups during the actual course of the experiments — compare open-label, single-blind

First Known Use of DOUBLE-BLIND

1950

dou·ble–blind

adjective \ˌdəb-əl-ˈblīnd\   (Medical Dictionary)

Medical Definition of DOUBLE–BLIND

: of, relating to, or being an experimental procedure in which neither the subjects nor the experimenters know which subjects are in the test and control groups during the actual course of the experiments—compare open-label, single-blind

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