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 called a double-blind study. This helps to reduce bias and ensure the validity of the results by preventing the researcher or participants from consciously or unconsciously affecting the outcomes. The randomized-trial and placebo-controlled terms refer to different aspects of experimental design and do not necessarily imply blinding. The term "researcher-protected" is not a commonly used scientific term.

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