In an experimental study evaluating the effectiveness of an antidepressant medication, one group of participants receives a sugar pill instead of the true medication. This is an example of a:

Question

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The group receiving a sugar pill instead of the actual medication is part of a placebo study. The purpose of using a placebo (a substance with no therapeutic effect) is to compare its effects with those of the real medication, helping to determine the medication's effectiveness beyond psychological factors.

In an Experimental Study Evaluating the Effectiveness of an Antidepressant