Free online test for response inhibition and impulse control. Respond to arrows; if a red square appears, stop.
This Stop-Signal Task (SST) is a classic response inhibition test. Most trials are “Go” trials: press Left/Right for the arrow direction. If the stop-signal (red square) appears, do not respond.
The Stop-Signal Task (SST) is widely used in cognitive psychology to measure inhibitory control — your ability to cancel an action that is already being prepared. In everyday terms, it reflects how well you can stop an impulse when a “do not act” signal appears.
Your points come from correct Go responses and successful stops. Your final score is points multiplied by a speed factor derived from your mean correct Go reaction time. For the cleanest tracking, compare runs on the same device and browser.
Score is driven mainly by accuracy (including successful stops). A few stop-errors or wrong-direction presses can reduce points more than small speed gains can compensate.
A little caution can help, but over-slowing reduces the speed factor. Aim for clean responses first, then gradually increase speed while keeping accuracy stable.
Yes. Keyboard latency, browser scheduling, and display refresh can shift measured reaction times. Track progress on the same setup for meaningful comparisons.
No. This is for training and self-tracking only. If you have concerns about attention or impulse control, consult a qualified professional.
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