Ask one practical question
Examples: Does retrieval-first review help me notice gaps better than rereading first? Does a quieter environment reduce task switching for this work? Does immediate feedback reduce repeated errors in this problem type? Keep the question small enough to observe.
Record a baseline
Write what you normally do and what evidence you currently have. Without a baseline, it is easy to remember only the result you hoped for.
Change one meaningful variable where practical
A clean personal experiment is easier to interpret when you do not change everything at once. Keep the task and conditions reasonably comparable where possible, but do not pretend a personal self-test is a controlled scientific study.
Record result and limitation together
A result is stronger when its limitation sits beside it: small sample, different difficulty, mood/fatigue, outside help, short follow-up, subjective judgment, or measurement uncertainty. The limitation does not make the experiment useless; it keeps the conclusion proportional.
Decide: keep, modify, stop, or test again
A method does not need loyalty. Keep it when evidence is useful and cost is acceptable; modify it when the signal is mixed; stop it when it adds burden without value; test again when uncertainty remains and the question matters.
Reflection
Questions to sit with
- What one method difference am I testing?
- What evidence will I record?
- What limitation could explain the result?