Which of the Following Statements Describes a Double-Blind Experiment

question 25

Multiple Choice

Which of the following statements describes a double-blind experiment?

• A) The experimental and control groups take turns getting each treatment.
• B) Neither subjects nor researchers know which subjects are in the control group and which are in the experimental group.
• C) Neither group of subjects knows whether they are in the control or experimental group, but the researchers do know.
• D) Both subject groups know whether they are in the control or experimental group, but the researchers do not know.
• E) Neither the subjects nor the persons having contact with the subjects know the true purpose of the experiment.

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