A double-blind experiment is one in which:
A)a pre-experimental design is used.
B)no hypotheses are stated before the data is collected.
C)neither the subjects nor the experimenter know who is in the control group.
D)the subjects do not know who is in the control group but the experimenter does.

Question

Quizplus · Accepted Answer

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

A Double-Blind Experiment Is One in Which