Often the experimental group receives a pill believed to have strong effects, and the control group receives a pill that looks like the other pill, but has no effects, other than those due to expectations. The one given to the control group is called a

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The pill given to the control group is a placebo, which is a substance or treatment that has no therapeutic effect but is given to participants in a study to compare its effects to those of the experimental treatment.

Often the Experimental Group Receives a Pill Believed to Have