反应时间测试

Simple reaction time is the fastest possible response to a single stimulus — a pure measure of neural conduction plus motor execution.

Elite human averages fall around 200 ms. Average adults land near 270-300 ms. Fatigue, caffeine, and even posture shift the number meaningfully.

We discard early button-presses as false starts because they reflect anticipation, not reaction.

Tracking your RT over weeks is a surprisingly sensitive marker of sleep and training load.

Each test is constructed using Item Response Theory (IRT) and Classical Test Theory (CTT) to ensure reliable measurement of knowledge and ability across different difficulty levels.

Questions undergo rigorous review including difficulty calibration, discrimination analysis, and distractor effectiveness evaluation to maintain high assessment quality.

1. Wait for the box to turn green.
2. Click (or press Space) as fast as possible.
3. Clicking too early is counted as a false start.
4. Run it at your best — caffeinated, awake, undistracted.