Which of the following describes the placebo effect?
O
A. At least one block of subjects in an experiment receives only
placebos.
O
B. Subjects may respond to a treatment simply because they believe
it is affecting them.
C. Subjects receive inactive sugar pills instead of real medication.
O
D. An experiment is repeated many times with real drugs and
placebos
O
E. Subjects are prevented from knowing whether they are receiving
real drugs or placebos.
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