In the context of experimental design, "double blind" refers to the situation in which
A) neither the experimenter nor the participant knows which experimental treatment the participant is receiving.
B) the experimenter randomly chooses which group and treatment sequence each participant is assigned to.
C) neither the data analyst nor the participant knows what hypothesis is being tested.
D) two investigators analyze the data independently, and both are kept unaware of the identity of all participants.

Question

Quizplus · Accepted Answer

Double-blind experiments are designed to eliminate bias by ensuring that neither the participants nor the experimenters know who is receiving a particular treatment. This helps in maintaining the objectivity of the research findings.

In the Context of Experimental Design, "Double Blind" Refers to the Situation