The placebo effect means __________
A) all conditions in an experiment are the same.
B) that there is no control group.
C) the expectations of the participants influence their behavior.
D) experimenter bias causes the subjects to act strangely.

Question

Quizplus · Accepted Answer

The placebo effect refers to the phenomenon where the expectations of the participants in a study can influence their behavior or perception of a treatment, even if that treatment is not active or effective. This is why control groups are often necessary in experiments to account for the placebo effect. Thus, choice C is the correct answer. Choices A, B, and D are incorrect because they do not accurately describe the placebo effect.

The Placebo Effect Means __________