A placebo is an important element of many clinical trials because:
A)it serves as a control for the experiment.
B)it allows the researcher to adjust for the psychological effects of receiving medical attention.
C)the use of the placebo can help avoid confounding.
D)All of the answer options are correct.

Question

Quizplus · Accepted Answer

All of the answer options are correct. A placebo is an important element of many clinical trials as it serves as a control for the experiment, allows researchers to adjust for the psychological effects of receiving medical attention, and helps avoid confounding. Therefore, all answer options are correct.

A Placebo Is an Important Element of Many Clinical Trials