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Question
Caroline is participating in an experimental study in which she is taking an herbal supplement and the researcher measures her perceived energy levels for several weeks. Although she doesn"t know it, the supplement she is given in the study does not contain any of the herb of interest in the study. However, Caroline feels as though she has more energy than before, and she attributes it to the herbal supplement. This effect due to the psychological impact that goes along with knowledge that a treatment has been administered is called a(n) _____.A.maturation effect
B.false positive
C.counterbalancing effect
D.placebo effect
Answer
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