What a Reaction Percentile Means
A percentile indicates your relative ranking against a benchmark distribution, not your absolute physiological limit.
Percentile context is useful for comparison, but quality depends on session integrity and cohort assumptions.
- Higher percentile means faster relative performance.
- Median-based percentiles are more stable than best-click percentiles.
- Always read percentile together with consistency score.
Why Cohort Adjustments Matter
Device class and age band can shift expected ranges, so percentile mapping should not assume one universal baseline.
Desktop/mobile differences are often large enough to distort direct ranking without adjustment.
- Use device cohort for fair interpretation.
- Use age band for context, not deterministic labeling.
- Keep the same cohort assumptions when tracking progress.
Integrity Checks Before Percentile Trust
If integrity flags are high, percentile outputs may be less reliable for decision-making.
Early-click bias and suspicious low repeats can create misleading rank jumps.
- Check early-click rate first.
- Inspect suspicious-repeat warnings.
- Re-run with warmup and controlled setup.
Best Practice for Percentile Tracking
Track weekly median percentile in one mode before changing training parameters.
Use challenge links for peer comparison only after stable baseline sessions.