double blind experiment

dou·ble blind ex·per·i·ment

(dŭb'ĕl blīnd eks-per'i-mĕnt)
An investigation conducted with neither experimenter nor subjects knowing which experiment is the control; prevents bias in recording results.
See also: double-masked experiment
References in periodicals archive ?
Benton and Roberts completed a double blind experiment on sixty children.
The effect of palm olein and of canola oil on plasma lipids was examined in double blind experiments in healthy Australian adults.
We hope and want to believe that randomized, placebo-controlled, double blind experiments eliminate bias and give us a firm basis for evidenced-based medicine, but the experts suggest research can be, and often is, perverted.