Frequently Asked Questions

A reaction time test measures how quickly you respond to a visual, auditory, or physical stimulus. It records the interval between stimulus presentation and your motor response in milliseconds (ms). The average human visual reaction time is approximately 250ms. Try our visual reaction test or sound reflex test.

The average visual reaction time for adults aged 20-35 is approximately 240-260ms. Auditory reaction times are around 160-180ms. Simple reaction is fastest, while choice reaction adds decision overhead and Go/No-Go tests measure inhibition control. The F1 start lights test combines all three.

A 60Hz display introduces up to 16.7ms of visual display lag. Higher refresh rate monitors (144Hz, 240Hz) reduce this delay. CogniArena's paint-sync calibration compensates using a double-nested requestAnimationFrame loop to measure and subtract display latency, ensuring comparable scores across different hardware.

The sequence memory test displays a 4x4 grid where tiles light up in a random sequence. You repeat the sequence by clicking tiles in the correct order. Each round adds one step. This measures visuospatial working memory capacity, related to Miller's Law of 7 plus or minus 2 items.

The dual n-back test presents simultaneous visual (grid position) and auditory (letter) stimuli. You identify when the current stimulus matches one presented n steps earlier. This dual-task working memory assessment is widely used in cognitive training research and neuroscience studies.

The average person can hold 7 digits in short-term working memory. The number memory test starts at 4 digits and increases by one each round. The verbal memory test and visual pattern memory test measure the same capacity for words and spatial layouts.

The average typing speed is approximately 40 WPM. Proficient typists reach 55-70 WPM, professionals type 70-90 WPM, and elite typists exceed 90 WPM. Take the typing speed test to measure your words per minute with accuracy tracking.

Net WPM is calculated as gross WPM minus 1 word per uncorrected error. Gross WPM is total characters typed divided by 5 (standard word length) divided by time in minutes. This penalizes errors while rewarding speed, giving a balanced measure of typing ability.

An aim trainer measures how quickly and accurately you move a cursor to a target. Targets appear at random positions and you click them as fast as possible. The mouse accuracy test uses smaller targets for fine motor measurement and the flick trainer tests fast wrist movements.

The click speed test measures how many mouse clicks you register in a fixed time window (5 or 10 seconds), reported as clicks per second (CPS). This assesses motor firing rate and finger stamina. Elite clickers reach 10+ CPS using jitter clicking or butterfly clicking techniques.

The pattern reasoning test presents a 3x3 grid of shapes with one cell missing. Identify the logical rule and select the correct shape to complete the pattern. This measures fluid intelligence and abstract reasoning. The spatial orientation test tests mental rotation, a related cognitive skill.

The Stroop test displays color words (RED, BLUE, GREEN) printed in ink that may match or conflict with the word meaning. You identify the ink color, not the word. Incongruent trials create cognitive interference that slows response. The focus challenge extends this with multi-modal distractions over a longer session.

The Trail Making Test has two parts. Part A connects numbered circles in ascending order. Part B alternates between numbers and letters (1-A-2-B-3-C). Part B measures cognitive flexibility and task-switching ability and typically takes longer. This is a standard neuropsychological assessment.

The planning test evaluates how efficiently you solve multi-step problems by comparing your moves to the optimal solution. The prioritization test measures your ability to rank tasks by value and urgency under time pressure. The decision speed test rounds out the executive function suite.

Percentile scores compare your performance against the CogniArena user population. A percentile of 80 means you performed better than 80% of users. Each test category uses its own distribution curve. Raw metrics (ms, WPM, CPS, accuracy) are mapped to percentile lookup tables. View your scores on the dashboard.

The CAI score is a unified performance metric from the 5-stage Gauntlet assessment. It aggregates reaction speed, memory accuracy, focus stability, reasoning ability, and motor precision into a single 0-100 score with a cognitive archetype label.

Yes. All tests work on mobile browsers with touch support. Reaction tests use touchstart events for low-latency response. The interface adapts to smaller screens with a mobile bottom nav. Some precision tests benefit from a mouse but every assessment is fully functional on phones and tablets.

No. Everything runs 100% in your browser. No accounts, no cookies, no data collection. Your results stay on your device using local-first IndexedDB storage. See our privacy policy for details.