What Does It Mean for an Experiment to Be Double-Blinded

question 38

Multiple Choice

What does it mean for an experiment to be double-blinded?

• A)The researcher does not know which participants are in the treatment and control groups.
• B)The participants do not know who is in the treatment and control groups.
• C)Neither the researcher nor the participants know who is in the treatment and control groups.
• D)The researcher and the participants know which group they are in because it is unethical to keep this information from them.

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Definitions:

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