When the effect of an intervention in a single-subject design is in the same direction as a baseline trend (either increasing or decreasing),the researcher
A)can be extra confident regarding the effectiveness of the treatment.
B)can be confident that the treatment did not work because of the baseline trend.
C)cannot make firm conclusions about the effectiveness of the treatment.
D)none of these

Question

Quizplus · Accepted Answer

When the effect of an intervention is in the same direction as the baseline trend, it is difficult to determine whether the intervention caused the change or if it was simply a continuation of the existing trend. Therefore, the researcher cannot make firm conclusions about the effectiveness of the treatment. This highlights the importance of utilizing a control or comparison group to establish cause and effect relationships in research.

When the Effect of an Intervention in a Single-Subject Design