The participants who are assigned to the group that receives a fake substance, treatment, or procedure that has no known direct effects are in the _____ group.
A)experimental
B)extraneous
C)placebo
D)practice

Question

Quizplus · Accepted Answer

The placebo group is given a fake substance, treatment, or procedure that has no known direct effects. This is done to test the effectiveness of the actual treatment being studied, by comparing its effects to those of the placebo group.

The Participants Who Are Assigned to the Group That Receives