Narrow claims the data support
A worthwhile target material finding appears on a defined task under conditions recorded for adaptive level, not merely in accumulated sessions. Follow-up may adjust the routine when both target material and adaptive level remain manageable.
A neutral domain exercise result is useful too. When transfer distance remains unchanged amid frustration or poor fit, the product may not earn further time or data.
What transfer distance still cannot answer
Practice effects, changing cues, sleep, and stress can alter adaptive level; familiarity and assistance can also reshape target material. Neither the adaptive level nor target material record separates every cause, so this conclusion stays task-specific.
A concerning change beside transfer distance should pause self-training. Seek suitable help when the associated domain exercise pattern is sudden, worsening, severe, or unsafe.