double-blind

[ duhb-uhl-blahynd ]

adjective

1. of or relating to an experiment or clinical trial in which neither the subjects nor the researchers know which subjects are receiving the active medication, treatment, etc., and which are not: a technique for eliminating subjective bias from the test results.

double-blind

adjective

1. of or relating to an experiment to discover reactions to certain commodities, drugs, etc, in which neither the experimenters nor the subjects know the particulars of the test items during the experiments Compare single-blind

Word History and Origins

Origin of double-blind¹

First recorded in 1935–40

Example Sentences

To be clear: There have been no double-blind or controlled studies that conclusively confirm this hair-loss hypothesis.

From The Daily Beast

After multiple rejections, he cobbled together enough money for a limited double-blind trial that began last year.

From The Daily Beast

Scientists design experiments specifically to avoid confirmation bias, by using double-blind testing and other techniques.

From The Daily Beast

The second is double blind; neither group knows what seed it is getting.

From The Daily Beast

Double blind doors such as are a feature of this entrance were the predecessor of the modern screen door.

From Project Gutenberg