RESEARCH METHODS-QUALITATIVE STUDY DESIGNS-BASING ON NATURE OF THE INVESTIGATION-DOUBLE-BLIND STUDIES
The concept of a double-blind study is very similar to that of a blind study except that it also tries to eliminate researcher bias by concealing the identity of the experimental and placebo groups from the researcher. In other words, in a double-blind study neither the researcher nor the study participants know who is receiving real and who is receiving fake treatment or which treatment model they are receiving.
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