How MindSpeed measures and compares results

Timing

Times are measured in your browser with the high-resolution clock that also stamps input events. For the reaction time test, the clock starts in the animation frame that paints the screen green and stops at the timestamp of your click or tap, so no page code runs in between.

What cannot be removed is the delay of your hardware: a screen at 60 Hz shows a new picture every 16.7 ms, and mice, touchscreens and wireless connections add their own delay. Typical totals are 20 to 80 ms.

Device pools

Because hardware delay differs, results are compared only within the same kind of input: mouse, touchscreen or (for typing) physical keyboard versus on-screen keyboard. Memory tests do not depend on speed and use one pool for all devices.

Reference values and our own data

Each pool needs enough results before its percentiles are based on MindSpeed data. Until then, a normal distribution with published reference values is used. Every result page says which basis was used.

Once a pool has enough results, percentiles come from its most recent 5,000 valid results, refreshed every few minutes. Statistics pages count each person once per test (their best result).

Fair play

Results that a person cannot produce are kept for their owner but never ranked: reactions under 100 ms, rounds that are too regular to be human (autoclickers), sequences answered faster than about 11 taps per second, pasted answers and typing faster than 220 words per minute.

Leaderboards are opt-in with a nickname, show one best result per person per week and never include unranked results.

Profile

The cognitive profile converts your best result in each test into a percentile, then averages the tests of each skill: speed (reaction time, aim), visual memory (sequence, visual memory, number grid), working memory (number memory), verbal memory and typing. The overall score averages the skills you have measured.