The use of a placebo in an experiment on the side effects of a new drug is an example of a ____ experiment.
A) single-blind
B) double-blind
C) meta-analytic
D) counterbalanced
E) repeated measures

Question

Quizplus · Accepted Answer

In a single-blind experiment, the participants do not know whether they are receiving the actual treatment or a placebo, but the researchers do. This setup helps to prevent the participants' expectations from influencing the results.

The Use of a Placebo in an Experiment on the Side