A student says, "The problem with single-subject experiments is that there is no control group, so you don't know if the treatment is effective." The BEST reply is:

Question

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The student's concern about the lack of a control group is valid, but the BEST reply is to explain the use of a reversal design where participants serve as their own controls. This is a common method used in single-subject experiments to evaluate the effectiveness of a treatment or intervention.

A Student Says, "The Problem with Single-Subject Experiments Is That