HCD.19:4.4 - Judge the contribution before assigning a material value
Compare the response with the qualified criterion. Distinguish a correct result, an error, an unfinished attempt, an unobserved contribution, and a task or criterion defect.
Then trace the material’s part in that outcome. The following rival explanations select different next moves.
| Observation | What to distinguish | Discriminating next move |
|---|---|---|
| The reader cannot justify the next operation | Missing explanation, missing prerequisite, or a question the material never promised to answer | Inspect the promise and available preceding relation; try the smallest declared aid without relabelling the first answer. |
| A correct-looking example supports a wrong rule | A non-discriminating example versus a false or absent subject relation | Use a case on which the intended and rival rules produce different results; inspect both rules explicitly. |
| The key rejects a valid response | Criterion defect versus reader error | Resolve the domain criterion and preserve the valid response before changing the explanation or instruction. |
| Separated concepts can be repeated but not combined | Missing relation, lost attachment, or unavailable prefix support | Inspect the two endpoints and the exact point of use; supply the missing relation or access, not another catalogue. |
| Success begins after the teacher names the decisive condition | Effective supported continuation versus independent recognition | Retain the helped result; use a fresh uncued case or reader if independent recognition is the live claim. |
| An expert succeeds despite a false explanation | Prior-knowledge rescue versus support actually supplied by the material | Preserve the source defect and withhold untested adequacy for less-prepared readers. That stronger use needs qualified audience evidence; select its collection only for an obtainable, worthwhile contribution. |
| A removed sentence makes no difference | Another public passage supplies the contribution, or the perturbation was irrelevant | Record the successful recovery. Revise the defect hypothesis rather than redefine success as failure. |
| A prepared agent succeeds while a human reports difficulty | Different knowledge, task, help, or experienced burden | Keep the human report and narrow the untested human claim now. Preserve the supported material diagnosis. Select a timed observation of the relevant reader and segment only when obtainable under the declared conditions and worth its whole burden for the receiving decision. |
An unsuccessful attempt alone does not diagnose the person or prove a material defect. A successful attempt alone does not prove that the material supplies every needed contribution.
Assign values only after recovering the material condition, evidence basis, and repair reach. Apply the specification’s anchors and return every selected coordinate, including lawful missingness. A bounded diagnostic that borrows a few questions says so and claims no complete vector. Resolve adjacent-value disagreement by the meaning and reach of repair, not by averaging ordinal labels.