A double-blind experiment is an experiment in which neither the experimental units (often human subjects) nor the people assessing their responses know which treatment each subject received until the observations have been collected. Blinding is used to reduce response and observer effects, often with a placebo (an inactive treatment made to resemble the treatment being studied) and a control group.
Double-Blind Experiment
See also
Control Group, Experiment, Experimental Design, Experimental Unit, Response BiasExplore with Wolfram|Alpha
References
Montgomery, D. C. Design and Analysis of Experiments, 8th ed. Hoboken, NJ: Wiley, 2013.Cite this as:
Weisstein, Eric W. "Double-Blind Experiment." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Double-BlindExperiment.html