When administered to subjects in an experiment, a placebo is a treatment that
A) is being subjected to rigorous testing.
B) has unpredictable medical effects.
C) is believed to be free of medical effects.
D) has different effects on different groups.

Question

Quizplus · Accepted Answer

A placebo is an inactive substance or treatment that is given to a subject in an experiment as if it were a real treatment. It is believed to be free of medical effects, but it can have psychological effects such as the placebo effect, where the subject experiences an improvement in their symptoms or condition simply because they believe they are receiving a treatment. Placebos are used as a control group in medical research to compare the effects of a real treatment to those of the placebo.

When Administered to Subjects in an Experiment, a Placebo Is