11) participants in the control group receive the placebo.\n○ true\n○ false

11) participants in the control group receive the placebo.\n○ true\n○ false

11) participants in the control group receive the placebo.\n○ true\n○ false

Answer

Brief Explanations:

In experimental research, the control group is often given a placebo to compare with the experimental group that receives the actual treatment. This helps to isolate the effect of the treatment.

Answer:

True