The placebo effect is any change attributed to a person's beliefsand expectations rather than the actual drug, treatment, or procedure.
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Q450: In a double-blind experiment, participants are both
Q451: Participants in the control group receive none
Q452: The purpose of the double-blind technique is
Q453: Any change in performance that results from
Q454: The double-blind technique is used to guard
Q456: The purpose of the double-blind technique is
Q457: In a research study, subtle cues or
Q458: Random assignment helps ensure that potential differences
Q459: The experimental technique in which the researchers,
Q460: In the gingko biloba experiment, the participants
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