Choice Reaction Time Test

Identify the cue before responding

A simple reaction test asks for one prepared response after one signal. A choice task adds a decision step: identify which stimulus appeared, match it to the correct response, and then act. That extra selection step is why decision reaction time is usually slower than a single green-screen click.

Use 2, 4, or 8 mapped responses

In 2-choice mode, only two responses are possible. In 4-choice mode, the mapping is broader and takes more attention. In 8-choice mode, the grid becomes harder practice, so accuracy matters even more than raw speed.

Errors do not become clean samples

Correct responses become timing samples. A wrong response records an error and repeats the round. An early click, tap, or key press records a false start, so guessing does not create a clean result.

Your summary should not be judged by one fastest click. The median is less sensitive to one unusually slow or lucky round, the average shows the overall pace, the best and worst values show the range, and consistency shows how tightly your correct responses grouped together.

Accuracy is part of the score. A fast session with several wrong choices is not the same as a clean session with slower but correct decisions. The per-round log shows what appeared, what you chose, and whether the response counted.

For a single-response benchmark, use the main simple reaction time test. For keyboard-only visual timing, try the spacebar reaction time test. You can also compare with the audio reaction time test or the F1 reaction time test.

• 01 Start with 2-choice mode if the mapping is new.
• 02 Move to 4-choice once you can finish cleanly.
• 03 Use 8-choice mode as harder practice, not as an official score.
• 04 Keep the same device, browser, display, and input method when comparing sessions.

The choice reaction time test keeps results in this browser session. It is not a medical, neurological, IQ, driving, employment, or lab-grade assessment.