Medical

double-masked experiment

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dou·ble-blind ex·per·i·ment

an experiment conducted with neither experimenter nor subjects knowing which experiment is the control; prevents bias in recording results.
See also: double-blind study.
Farlex Partner Medical Dictionary © Farlex 2012

dou·ble-mask·ed ex·per·i·ment

(dŭb'ĕl-māskt eks-per'i-mĕnt)
A double-blind study conducted so that neither the subject nor the observer knows the identity of the control or variable.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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