HCD.19:4.6 - Repeat the affected use and stop at the supported conclusion

After repair, recheck the changed relation with its task and direct consumer. Reuse observations and values whose premises remain unchanged. Moving an explanation can reopen its former and new attachment and next-use prefix even when its words are identical.

Use a meaningfully changed condition when the question concerns the reach of the repair. Change the participant population, relevant condition, boundary, or decision so that a plausible overgeneralization would now fail. Preserve the same reader when studying supported continuation; choose a fresh task or reader when prior answer exposure would defeat the needed inference.

A preparatory failed attempt may be retained when subsequent instruction examines and resolves the attempted alternatives. If that resolution is absent, labelling the difficulty “productive” supplies no evidence. Similarly, immediate ease is not the target when the task deliberately asks the learner to construct a new relation with adequate support.

Return what changed and what did not: material contribution, actual response, assistance, remaining defect, and evidence needed for a stronger claim. An observed improved response under support is different from independent performance, unfamiliar-work transfer, delayed retention, and causal learning effect. Use the corresponding HCD evidence patterns when those claims are required.

Stop when the selected use or repair decision is supported, or return the exact criterion or evidence gap that withholds the requested stronger conclusion. Keep independently supported material findings and narrow an untested audience, burden or learning claim immediately. An unavailable or unwarranted human observation does not prevent this bounded result; a selected repair still needs its affected-use check. Do not broaden to the whole book because one bounded repair succeeded. Broaden when the changed premise or route actually affects more uses.