Which scenario best describes a double-blind study?
A) The investigator and the subjects wear blindfolds.
B) No one knows who is in the experimental or control groups
C) The subjects do not know if they are in the experimental or control groups.
D) Neither the investigator nor the subjects know who is in the experimental or control groups.
E) The investigator does not know if subjects are in the experimental or control groups.

Question

Quizplus · Accepted Answer

In a double-blind study, both the investigators and the subjects are unaware of who has been assigned to the experimental group and who has been assigned to the control group. This method is used to prevent bias in research results.

Which Scenario Best Describes a Double-Blind Study