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single-blind

[sing-guh l-blahynd] /ˈsɪŋ gəlˈblaɪnd/
adjective
1.
of or relating to an experiment or clinical trial in which the researchers but not the subjects know which subjects are receiving the active medication or treatment and which are not: a technique for eliminating subjective bias, as the placebo effect, from the test results.
Compare double-blind.
Origin
1960-1965
1960-65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for single blind

single-blind

adjective
1.
of or relating to an experiment, esp one to discover people's reactions to certain commodities, drugs, etc, in which the experimenters but not the subjects know the particulars of the test items during the experiment Compare double-blind
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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single blind in Medicine

single blind sin·gle blind (sĭng'gəl)
n.
A testing procedure in which the administrators do not tell the subjects if they are being given a test treatment or a control treatment, used in an effort to avoid accidental bias in the results.


sin'gle-blind' adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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