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Evaluate Placebos and the Placebo Effect
Grade Level
AP Psychology
AP.021 Evaluate Placebos and the Placebo Effect
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A treatment trial includes a placebo group, but the advertisement recruiting participants says, 'Join a study of a powerful new treatment.' Why might this matter?
A
The advertisement may create strong expectations in all participants, increasing placebo responses and affecting baseline assumptions.
B
A placebo effect can happen only if the advertisement says placebo.
C
The advertisement changes the treatment from experimental to correlational.
D
Recruitment wording cannot affect participants after random assignment.
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