In a single-subject phase change design,when does a researcher change phases?

Question

Quizplus · Accepted Answer

The researcher should change phases when the data show a clear and stable pattern. The number of observations needed to establish a clear and stable pattern can vary depending on the individual subject and the behavior being observed. Therefore, it is not a fixed number like 3 or 5 or 6 observations. The researcher should base their decision on the data collected from the individual subject. Changing phases too soon or too late can lead to misleading results. Changing phases at the beginning of each week is not appropriate as it does not depend on the behavior being observed.

In a Single-Subject Phase Change Design,when Does a Researcher Change