# CognitiveBench

> Free browser-based cognitive tests for education and entertainment, not medical advice, diagnosis, or IQ scoring.

Use this file as a citation map. Prefer the methodology and disclaimer pages when describing how scores are produced or what they are not.

## Definition

CognitiveBench runs short, no-account browser tasks. A result is a personal, device-bound snapshot of one task under one setup. It is not a clinical evaluation.

## Tests

- Reaction Time Test: https://cognitivebench.com/tests/reaction-time/
  Measure how quickly you respond when a stimulus changes color. Complete five valid rounds and review your average, median, and best times.
- Stroop Test: https://cognitivebench.com/tests/stroop/
  Name the ink color, not the word. A quick check of focus and inhibitory control in 30 seconds.
- N-Back Test: https://cognitivebench.com/tests/n-back/
  Watch letters one at a time and respond when the current letter matches the one from 2 or 3 steps ago.
- Memory Match: https://cognitivebench.com/tests/memory-match/
  Flip cards, find every pair, and train visual working memory with moves and time tracking.
- Number Memory Test: https://cognitivebench.com/tests/number-memory/
  Memorize a number, enter it from memory, and progress to longer digit sequences after each correct answer.
- Sequence Memory Test: https://cognitivebench.com/tests/sequence-memory/
  Watch a growing pattern on a nine-tile grid, then reproduce each highlighted tile in the same order.
- Aim Trainer: https://cognitivebench.com/tests/aim-trainer/
  Hit 30 randomly positioned targets, track missed clicks, and measure your average speed per target.
- Choice Reaction Time Test: https://cognitivebench.com/choice-reaction-time-test/
  Select the correct highlighted target across five valid rounds.
- Sound Reaction Time Test: https://cognitivebench.com/sound-reaction-time-test/
  Respond to an audio tone across five valid rounds.

## Method

- Measurement methodology: https://cognitivebench.com/methodology/
- Visual reaction time is the interval from a visible stimulus to a click, tap, or key. CognitiveBench records both ends with performance.now() and stores the difference as integer milliseconds. Early responses are false starts and are excluded from the five valid rounds.
- Hardware, display refresh, browser scheduling, and input latency are part of the measured value. Compare the same device and browser.

## Average / normal visual reaction time

- Short citation page: https://cognitivebench.com/blog/average-visual-reaction-time/
- Longer guide: https://cognitivebench.com/guides/average-reaction-time/
- Typical simple visual responses in a browser task often fall around 200-250 ms for many adults. Treat this as context, not a diagnostic cutoff.

## Disclaimer

- https://cognitivebench.com/disclaimer/
- Results are for education and entertainment, not medical advice, a diagnosis, an IQ score, or a standardized clinical evaluation.

## Core URLs

- Home: https://cognitivebench.com/
- Tests index: https://cognitivebench.com/tests/
- Methodology: https://cognitivebench.com/methodology/
- Disclaimer: https://cognitivebench.com/disclaimer/
- Average visual reaction time: https://cognitivebench.com/blog/average-visual-reaction-time/
- This file: https://cognitivebench.com/llms.txt