Effort: Medium
What to notice
Offer one recall question on a familiar topic, with explanations available without answering.
Where it fits
- Fits
- Learning-service visitors, including people returning to familiar material.
- Use it when
- When all necessary information remains available without taking the quiz.
- Avoid it when
- When an unfamiliar-knowledge test would gate eligibility.
How to build it
- Choose one short question about previously encountered knowledge.
- Provide “not sure” and a direct answer path.
- Place a related learning path after the explanation.
Measure
- Main metric
- Share of eligible visitors understanding the related explanation
- Guardrail
- Dropout after errors and failure to locate the answer
- How to measure
- Allocate comparison groups before exposure and use equal follow-up and eligibility. Track Share of eligible visitors understanding the related explanation alongside Dropout after errors and failure to locate the answer.
When it backfires
Never gate answers behind registration or penalize errors.
Alternatives
Theory behind it
Retrieval practice
Distinguish practicing retrieval from simply rereading material.
Limited evidence
Meaningful choice
Choice can support motivation, with effects depending on what is chosen and under which conditions.
Well supported
Evidence limits: An editorial web application; conversion effects on this interface are unmeasured. Do not turn an average meta-analytic result into an optimal option count or conversion forecast. Avoid illusory choice and unwanted profiling.