Psychology research task
Visual Reaction Time
single-stimulus visual RT with a randomised onset delay.
Construct
simple visual reaction time / processing speed
Response format
keyboard, pointer
Version
2026-07-12
Research-use note
Onset is timed from a setTimeout callback, not physical stimulus presentation; browser scheduling jitter, refresh rate and tab throttling are uncaptured. Reliable for within-device repeated measures, weak for absolute cross-device comparison.
This resource is not a clinical diagnosis, treatment, professional assessment, or crisis service. Researchers remain responsible for ethics approval, lawful processing, suitability, deployment, and interpretation.