C-R15
Comparison order — Reference record
Order can affect an observer’s reference point. A comparison record should preserve the actual sequence and the intended comparison question.
| Reference record | Working notes |
|---|---|
| Overview | Comparison order |
| Practical example | Display the sequence beside the notes rather than rearranging samples after observation. |
| Limits and interpretation | A single sequence cannot establish that order effects were controlled. |
| Document control | Reference edition 2026.11 |
Measurements and examples are descriptive, not acceptance criteria.