Definition

1. Noun:
   • A test procedure in which the identity of those receiving the intervention is concealed from both the administrators and the subjects until after the test is completed; designed to reduce or eliminate bias in the results: A "double blind" is a rigorous experimental method used primarily in scientific research, especially in clinical trials, to prevent conscious or unconscious bias from influencing the outcome.

Usage

• The term "double blind" is used as a noun, often in the phrase "double-blind study," "double-blind trial," or "double-blind test." It describes the design of the experiment itself.
• It is a standard in high-quality research to ensure objectivity.

Examples

• Noun:
  • The drug's efficacy was confirmed in a large double blind. (The drug's efficacy was confirmed in a large double-blind study.)
  • To ensure unbiased results, the researchers conducted a double blind. (To ensure unbiased results, the researchers conducted a double-blind trial.)

Advanced Usage

• "double-blind procedure/methodology": Emphasizes the methodical aspect of the design.
  • The study followed a strict double-blind procedure.
• "conducted in a double-blind fashion/manner": Describes how the trial was carried out.
  • The experiment was conducted in a double-blind fashion.

Variants and Related Words

• Double-blind (adjective): Used to describe a study or trial using this method.
  • It was a double-blind clinical trial.
• Blinding (noun): The general technique of concealing information.
• Single-blind (adjective): A study where only the participants are unaware of their group assignment, but the researchers are not.

Synonyms

• Blinded trial: A more general term that can include single-blind or double-blind designs.
• Masked study: An alternative term, especially in medical contexts, with the same meaning.

Related Phrases

• Double-blind peer review: A process in academic publishing where both the reviewer and the author are anonymous to each other.
  • The journal uses a double-blind peer review system.

Noun

1. a test procedure in which the identity of those receiving the intervention is concealed from both the administrators and the subjects until after the test is completed; designed to reduce or eliminate bias in the results