A double-blind study means that:
A) neither the subjects nor the researchers know who is in the experimental group or the control group.
B) neither the subjects nor the researchers know the "real" reason they are involved in a study.
C) neither the subjects nor the researchers are aware that a study is taking place.
D) the subjects are blind as to whether they are getting the actual treatment under consideration or a simulated treatment.

Question

Quizplus · Accepted Answer

In a double-blind study, both the subjects and the researchers are unaware of who is receiving the experimental treatment and who is in the control group. This is done to eliminate bias and increase the validity of the study's results. Option B is not accurate because the researchers should know the reason for the study, and option C is not practical as subjects cannot participate in a study without being aware of it. Option D refers to a single-blind study where subjects do not know if they are receiving the real or a simulated treatment.

A Double-Blind Study Means That