What the tests measure
Each test focuses on a narrow, observable task. A score describes performance in that task and session. It is not a medical diagnosis or a complete measure of intelligence.
Score calculation
Raw events are converted by versioned scoring functions. Reaction Time reports each signal-to-response interval in milliseconds. Typing uses correct characters per five-character word per minute. Level tests report the highest completed difficulty.
Device context
Results record a broad device category and input method because touch, mouse, keyboard, screen refresh rate, and browser scheduling can influence performance. Human Test Lab does not create a persistent device fingerprint.
Outliers and percentiles
Implausibly fast reaction results are marked as outliers. Percentiles will only appear when a sufficiently large, version-matched, device-aware sample is available. A guessed comparison is less useful than an honest raw result.