Which term describes a study where neither the researcher nor the participants know who is in the treatment group and who is not?
A)Randomized-trial
B)Placebo-controlled
C)Double-blind
D)Researcher-protected

Question

Quizplus · Accepted Answer

A study where neither the researcher nor the participants know who is in the treatment group and who is not is referred to as a double-blind study. In this type of study, the use of placebos and randomization can also be involved, but the key feature is that the identities of the treatment and control groups are concealed from both the participants and the researchers.

Which Term Describes a Study Where Neither the Researcher nor the Participants