To control for the placebo effect, an experimenter uses _____ in which the participants do not know if they are receiving a real drug or a placebo, although the experimenter giving them the pill does know which group received the real drug or the placebo.
A)a single-blind experiment
B)a double-blind experiment
C)random selection
D)random assignment

Question

Quizplus · Accepted Answer

In a single-blind experiment, the participants do not know if they are receiving the real treatment or a placebo, but the experimenter does know. This helps control for the placebo effect by keeping participants unaware of their group assignment.

To Control for the Placebo Effect, an Experimenter Uses _____