One difficulty in conducting medical research is that participants often assume that any treatment will be effective in alleviating their symptoms. Therefore, a researcher has to design an experiment that measures the influence of
A)random selection.
B)medical confounds.
C)the Rosenthal effect.
D)the placebo effect.

Question

Quizplus · Accepted Answer

The placebo effect refers to the phenomenon in which a participant's symptoms are improved simply because they believe they are receiving a treatment, even if that treatment is an inactive substance (i.e. a placebo). Participants often assume that any treatment will be effective, so it is important for a researcher to measure the specific influence of the placebo effect in order to determine if a treatment is actually effective or if any observed improvements are simply the result of the placebo effect.

One Difficulty in Conducting Medical Research Is That Participants Often