Double blind
Double Blind
Double blind (pronunciation: /ˈdʌb(ə)l blʌɪnd/) is a term used in research design, particularly in clinical trials, to refer to a procedure where neither the participants nor the experimenters know who is receiving a particular treatment. This method is used to prevent bias in research results.
Etymology
The term "double blind" originates from the combination of "double", meaning twice or two, and "blind", referring to the lack of knowledge or awareness. It was first used in the context of clinical trials in the mid-20th century.
Related Terms
- Blind Experiment: An experiment where information about the test is kept from the participant to reduce bias.
- Single Blind: A type of blind experiment where the individual subjects do not know whether they are receiving the treatment or a placebo.
- Placebo: A substance or treatment which is designed to have no therapeutic value.
- Bias: Prejudice in favor of or against one thing, person, or group compared with another.
- Clinical Trial: Research investigations in which people volunteer to test new treatments, interventions or tests as a means to prevent, detect, treat or manage various diseases or medical conditions.
See Also
External links
- Medical encyclopedia article on Double blind
- Wikipedia's article - Double blind
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