The treatment guide describes how a child is admitted to Stage 2 if parent and clinician severity ratings meet specified targets.
If a child does this a few times in one conversation, and it is not the habitual way that of talking in the clinic, then it is not a problem and there is no need to do anything about it. On the other hand, if this happens often, subtly intervene. The aim is to gently move the child on to talking about something different, so that a more representative sample of speech is heard. For example, try to move the “Counting Kid” on to talking about functions, and the “Nursery Rhyme Kid” on to playing a matching game. Then you are more likely to obtain a baseline speech measure that is valid.