Effort: High
What to notice
Let users choose practice difficulty rather than automatically escalating from scores alone.
Where it fits
- Fits
- Users of ongoing practice services with varied experience.
- Use it when
- When skills and assessment criteria can be defined for each level.
- Avoid it when
- When “difficulty” merely adds workload without calibrated tasks.
How to build it
- Explain the skill and effort at each level.
- Suggest changes using recent results and stated preference.
- Allow an easier level and a default path without choosing.
Measure
- Main metric
- Share of eligible learners meeting the next skill criterion
- Guardrail
- Dropout on excessive difficulty and reported boredom or discomfort
- How to measure
- Allocate comparison groups before exposure and use equal follow-up and eligibility. Track Share of eligible learners meeting the next skill criterion alongside Dropout on excessive difficulty and reported boredom or discomfort.
When it backfires
Do not lock people into repeated failure to extend engagement.
Alternatives
Theory behind it
Mastery-oriented goals
The same task can emphasize outperforming others or developing competence.
Practitioner framework
Hexad gamification preferences
People can prefer socializing, exploration, achievement or contribution.
Limited evidence
Measuring gameful experience
Measure gameful experience separately from task achievement.
Limited evidence
Evidence limits: An editorial web application; conversion effects on this interface are unmeasured. This is an educational synthesis, not evidence that all rankings harm. Do not confine experienced users to easy tasks.