One difficulty in conducting medical research is that participants often assume that the treatment will be effective in alleviating their symptoms,hence they report that their symptoms are alleviated.Therefore,a researcher must design an experiment that accounts for the possible influence of
A)random selection.
B)medical confounds.
C)the Rosenthal effect.
D)the placebo effect.

Question

Quizplus · Accepted Answer

The placebo effect is the phenomenon where participants report improvement in their symptoms despite receiving a treatment that has no active medical ingredients. Therefore, to account for the possible influence of participants' expectations and beliefs, a researcher must design an experiment that includes a placebo control group. This will allow the researcher to compare the effects of the actual treatment to the effects of receiving a placebo, which helps to distinguish whether the treatment is truly effective or not.

One Difficulty in Conducting Medical Research Is That Participants Often