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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A testing procedure, designed to eliminate biased results, in which the identity of those receiving a test treatment is concealed from both administrators and subjects until after the study is completed.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. 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

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