Q
Which of the following best describes a double-blind experimental procedure?
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A
A. All subjects get the experimental procedure
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B
B. Half the subjects get the experimental procedure, half the placebo, which they receive is known only to the experimenter
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C
C. Half the subjects get the experimental procedure, half the placebo; which they receive is not known to subjects or experimenter
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D
D. All subjects get the control procedure
Correct Answer:
C. C. Half the subjects get the experimental procedure, half the placebo; which they receive is not known to subjects or experimenter
