50M+ scored sessions

29 Free Cognitive Tests — Measure Your Brain Performance

29 science-backed tests measuring reaction speed, working memory, attention, spatial reasoning, and executive function. No equipment, no sign-up required. Results in minutes.

50M+
Scores recorded
29
Validated tests
<5 min
Most tests done
Free
No sign-up needed
Speed

Reaction Time

Click when the screen turns green. Tests simple visual reaction speed — the foundation of all fast cognitive responses.

~1 min 8.4M scores Avg: 284ms
Take Reaction Time Test
Memory

Sequence Memory

Watch a growing pattern of squares light up, then repeat it in order. Directly parallels the clinical Corsi Block test.

~3 min 6.1M scores Avg: 8 levels
Take Sequence Memory Test
Speed

Aim Trainer

Hit 30 targets as fast as possible. Measures visuomotor speed and spatial precision following Fitts' Law.

~1 min 3.5M scores Avg: 380ms
Take Aim Trainer Test
Memory

Number Memory

A number flashes briefly. Enter it exactly. Each round adds a digit — tests verbal working memory span (Miller's Magic Number 7).

~2 min 5.2M scores Avg: 7 digits
Take Number Memory Test
Memory

Verbal Memory

Seen or new? Words appear one at a time. Track which you've already seen. Tests episodic recognition memory using a continuous recognition paradigm.

~3 min 3.8M scores Avg: 50 words
Take Verbal Memory Test
Memory

Chimp Test

Numbers appear then vanish. Click them in order. Based on research showing chimps outperform humans on this specific visuospatial task.

~2 min 4.7M scores Avg: 5 numbers
Take Chimp Test
Memory

Visual Memory

Squares flash on a growing grid. Memorize and click them before time runs out. 3 lives — tests pure spatial pattern recall.

~3 min 4.2M scores Avg: 8 levels
Take Visual Memory Test
Speed

Typing Speed

Type passages at three difficulty levels. Character-level feedback, 30+ unique texts. Score is net WPM with accuracy correction.

30–120s 7.8M scores Avg: 52 WPM
Take Typing Speed Test
Speed

Pattern Recognition

A grid pattern flashes briefly. Identify which one you saw from multiple choices. Tests visual short-term memory and perceptual speed.

~2 min 4.1M scores Avg: 1200ms
Take Pattern Recognition Test
Speed

Processing Speed

A symbol appears — click the match from 5 options. 10 rounds, 3 difficulty levels. Based on the Symbol Digit Modalities Test (SDMT).

~1 min 2.9M scores Avg: 520ms
Take Processing Speed Test
Attention

Attention & Focus

Press Space when you see X. Don't press for any other letter. Based on the Continuous Performance Test (CPT) used in ADHD evaluation.

~1 min 1.7M scores Avg: 88% hits
Take Attention & Focus Test
Cognitive

MoCA Cognitive Test

The Montreal Cognitive Assessment — 8 sections covering memory, attention, language, and orientation. Used in presidential cognitive evaluations.

~8 min 1.2M scores Avg: 25/30
Take MoCA Cognitive Test
Attention

Stroop Test

A color word appears in a mismatched ink color. Click the ink color, not the word. Classic test of selective attention and cognitive interference.

~2 min 2.1M scores Avg: 72%
Take Stroop Test
Attention

Flanker Test

5 arrows appear — identify only the center arrow while ignoring the flankers. Based on the Eriksen Flanker paradigm for selective attention.

~2 min 1.4M scores Avg: 85%
Take Flanker Test
Attention

Go/No-Go Test

Press for green, hold back for red. 80% go trials create a habitual response you must occasionally suppress. Measures impulse control.

~2 min 1.8M scores Avg: 91%
Take Go/No-Go Test
Memory

N-Back Test

Does the current letter match the one N positions back? The gold standard for working memory training research.

~3 min 1.9M scores Avg: 68% (2-back)
Take N-Back Test
Memory

Digit Span

Digits flash one at a time — repeat them in order. Used in WAIS-IV and clinical neuropsychology. Tests verbal working memory span.

~2 min 2.8M scores Avg: 7 digits
Take Digit Span Test
Memory

Corsi Block Test

Blocks light up in sequence — tap them in the same order. The visuospatial counterpart to digit span. Hippocampus-dependent.

~3 min 1.3M scores Avg: 5.5 blocks
Take Corsi Block Test
Speed

Audio Reaction Time

Click the moment you hear a beep. Auditory reactions are 40ms faster than visual — find out how fast yours are.

~1 min 1.1M scores Avg: 240ms
Take Audio Reaction Time Test
Speed

Choice Reaction Time

A colored circle appears — click the matching box. More choices = slower RT. Demonstrates Hick's Law in action.

~2 min 1.6M scores Avg: 380ms
Take Choice Reaction Time Test
Speed

Subitizing Test

Dots flash briefly — how many did you see? Subitizing (1–4 items) is near-instant; counting (5+) is slower. Tests pre-attentive quantity perception.

~2 min 890K scores Avg: 93% (1–4)
Take Subitizing Test
Perception

Color Blindness Test

12 Ishihara-style plates. See the hidden numbers? 8% of males have some form of color vision deficiency — most don't know it.

~3 min 2.2M scores Avg: 11.4/12
Take Color Blindness Test
Perception

Peripheral Vision

Fix your gaze at center while dots flash in your peripheral field. Tests visual field breadth and detection across eccentricity zones.

~2 min 740K scores Avg: 82% det.
Take Peripheral Vision Test
Attention

Anti-Saccade Test

A flash appears — look away from it. The most replicated finding in schizophrenia research. Measures voluntary inhibition of reflexive eye movements.

~2 min 620K scores Avg: 78%
Take Anti-Saccade Test
Cognitive

Trail Making Test

Connect numbered circles (Part A), then alternate numbers and letters (Part B). Part B measures cognitive flexibility and task-switching.

~4 min 980K scores Avg: 29s (A)
Take Trail Making Test
Cognitive

Mental Rotation

Which shapes are the same, just rotated? Based on Shepard & Metzler 1971. Tests visuospatial reasoning and 3D mental imagery.

~3 min 1.2M scores Avg: 72%
Take Mental Rotation Test
Cognitive

Cognitive Reflection

7 questions with obvious-but-wrong intuitive answers. Only 17% score 7/7. Tests System 2 thinking and resistance to cognitive bias.

~5 min 3.4M scores Avg: 1.2/7
Take Cognitive Reflection Test
Cognitive

Mini IQ Test

20 questions across pattern sequences, verbal analogies, numerical reasoning, and spatial thinking. Estimates IQ range with a bell curve result.

25 min 4.1M scores Avg: ~100
Take Mini IQ Test
Cognitive

Raven's Matrices

The gold standard for fluid intelligence. 12 matrix problems — find the missing piece. Culture-fair and highly g-loaded.

10 min 1.8M scores Avg: 60%
Take Raven's Matrices

Global Score Benchmarks

Aggregated from 50M+ test sessions. Use these to see exactly where you stand. Data trimmed to exclude bot submissions and extreme hardware outliers. See methodology for details.

Test Global Avg Top 25% Top 10% Top 1%
Reaction Time 284ms <255ms <235ms <190ms
Typing Speed 52 WPM 65+ WPM 75+ WPM 95+ WPM
Sequence Memory 8.3 lvls 10+ 12+ 15+
Number Memory 7 digits 8+ 9+ 12+
Chimp Test 5 nums 7+ 9+ 12+
Visual Memory 8 levels 10+ 12+ 15+
Pattern Recog. 1200ms <900ms <700ms <450ms
Verbal Memory 50 words 65+ 80+ 110+
Aim Trainer 380ms <320ms <280ms <220ms
Cognitive Reflection 1.2/7 3+ 5+ 7/7
Mini IQ Test ~100 110+ 120+ 135+
Processing Speed 520ms <400ms <320ms <220ms
N-Back 68% (2-back) 78%+ 88%+ 95%+
Digit Span 7 digits 8+ 9+ 12+
Choice Reaction Time 380ms <320ms <280ms <220ms
Stroop Test 72% 82%+ 90%+ 98%+
Go/No-Go 91% 95%+ 98%+ 100%
Flanker Test 85% 91%+ 95%+ 99%+
Raven's Matrices 60% 72%+ 83%+ 100%
Mental Rotation 72% 82%+ 90%+ 99%+
Corsi Block 5.5 blocks 7+ 8+ 10+
Audio Reaction Time 240ms <215ms <195ms <155ms
Subitizing 93% (1–4) 97%+ 99%+ 100%
Attention & Focus 88% 94%+ 97%+ 100%
Trail Making 29s (A) <22s <17s <10s
Anti-Saccade 78% 88%+ 93%+ 99%+
Color Blindness 11.4/12 12/12 12/12 12/12
Peripheral Vision 82% 90%+ 95%+ 100%
MoCA Test 25/30 27+ 29+ 30/30

Lower is better for time-based tests (Reaction Time, Aim Trainer, Processing Speed, Pattern Recognition). Higher is better for all others.

Test Popularity — Scores Taken

Which tests people take most across all 29 tests. Reaction Time leads by a wide margin — it's the fastest test to complete and the most shareable result. 17 new tests added May 2026.

8.4MReaction Time 7.8MTyping Speed 6.1MSequence Memory 5.2MNumber Memory 4.7MChimp Test 4.1MMini IQ Test 4.1MPattern Recog. 4.2MVisual Memory 3.8MVerbal Memory 3.4MCognitive Reflect. 3.5MAim Trainer 2.8MDigit Span 2.2MColor Blindness 2.1MStroop Test 2.9MProcessing Speed 1.9MN-Back 1.8MRaven's Matrices 1.8MGo/No-Go 1.7MAttention 1.6MChoice RT 1.4MFlanker 1.2MMental Rotation 1.2MMoCA Test 1.3MCorsi Block 980KTrail Making 1.1MAudio RT 620KAnti-Saccade

What Each Test Measures

Each test targets a distinct cognitive domain grounded in peer-reviewed neuropsychology. Read the science page for full methodology and clinical paradigm references.

Speed & Reaction

How fast your nervous system detects a stimulus, processes it, and produces a motor response. Peaks around age 24 and declines ~2ms/year after 30. Primarily measures peripheral and central processing velocity.

Reaction Time — simple RT paradigm (Donders, 1868) Aim Trainer — visuomotor integration (Fitts' Law) Processing Speed — Symbol Digit Modalities Test Typing Speed — procedural motor speed

Working Memory

The brain's capacity to hold and manipulate information over seconds. Baddeley's model splits this into the phonological loop (verbal), visuospatial sketchpad (spatial), and episodic buffer (integrated). Working memory span predicts academic and professional performance.

Number Memory — phonological loop (Wechsler digit span) Sequence Memory — visuospatial sketchpad (Corsi block) Visual Memory — spatial pattern recognition (Phillips, 1974) Chimp Test — delayed match-to-position (Matsuzawa, 2007)

Attention & Vigilance

Sustained attention — the ability to stay focused on a task over time while suppressing impulsive responses. Mediated by the right prefrontal cortex and locus coeruleus-norepinephrine system. Assessed clinically for ADHD and traumatic brain injury.

Attention & Focus — Continuous Performance Test (CPT-X) Verbal Memory — recognition memory (Shepard, 1967) Pattern Recognition — change detection (Rensink, 2000)

Executive Function

Higher-order cognitive control — planning, task-switching, inhibition, and reasoning. Orchestrated by the prefrontal cortex. Most sensitive to aging among all cognitive domains. The MoCA was specifically designed to screen for executive function deficits.

MoCA Test — Montreal Cognitive Assessment (Nasreddine, 1996) Trail Making — task-switching, cognitive flexibility (Reitan, 1958) Processing Speed — cognitive throughput (SDMT, Smith 1968)

Inhibitory Control

The ability to suppress an automatic, habitual response in favour of a deliberate one. Mediated by the right inferior frontal gyrus. Deficits are a hallmark of ADHD, addiction, and schizophrenia. These tests measure how well you override your own reflexes.

Stroop Test — color-word interference (Stroop, 1935) Flanker — selective attention (Eriksen & Eriksen, 1974) Go/No-Go — impulse inhibition (Donders, 1868) Anti-Saccade — oculomotor inhibition (Hallett, 1978)

Fluid Intelligence

The ability to reason and solve novel problems independent of accumulated knowledge. Closely linked to working memory capacity and prefrontal-parietal network efficiency. Raven's Progressive Matrices is the most widely used culture-fair measure of g (general intelligence).

Raven's Matrices — fluid g (Raven, 1936) Mini IQ Test — multi-domain reasoning estimate Mental Rotation — visuospatial reasoning (Shepard & Metzler, 1971) Cognitive Reflection — System 2 thinking (Frederick, 2005)

Perception & Sensory

Pre-attentive and low-level perceptual processes — how your visual and auditory systems encode stimuli before higher-order cognition kicks in. These tests reveal sensory limits that most people have never measured.

Color Blindness — Ishihara color vision screening Peripheral Vision — visual field detection breadth Subitizing — pre-attentive numerosity (Kaufman et al., 1949) Audio Reaction Time — auditory vs. visual RT comparison

How Scores Change With Age

All cognitive scores peak in the early-to-mid twenties and decline with age, but at very different rates. Speed tests decline fastest; vocabulary and crystallized knowledge hold up longest. Data from 50M+ sessions with self-reported age.

Reaction Time by Age (ms — lower is better)

Mean reaction time across age brackets. Decline begins around age 25 and accelerates after 60.

400 350 300 250 200 Peak 238ms 16–19 20–24 25–29 30–39 40–49 50–59 60–69 70+
Age Group Reaction Time
16–19 245ms
20–29 (peak) 240ms
30–39 255ms
40–49 277ms
50–59 309ms
60–69 355ms
70+ 401ms

Age data is self-reported and therefore noisy. Younger cohorts are over-represented. Full analysis at science page → Age Effects.

All-Time Site Records

The highest verified scores ever recorded on each test. Can you beat them? Full rankings available on the leaderboard.

Test Record Holder
Reaction Time 143ms
K
k_sub150
Typing Speed 187 WPM
K
keys_blaze
Sequence Memory Level 26
S
seq_beast
Number Memory 16 digits
N
numqueen
Verbal Memory 214 words
W
wordbank_k
Visual Memory Level 18
V
vismem_pro
Chimp Test 14 nums
C
chimp_god
Aim Trainer 188ms
A
apex_ace
Raven's Matrices 12/12
I
iq_apex
Mini IQ Test Est. 145
L
logic_king
Cognitive Reflection 7/7
T
think_slow
Stroop Test 100%
A
ace_stroop
Audio Reaction Time 121ms
E
ears_fast
Digit Span 14 digits
D
digitz
N-Back 97% (3-back)
N
nback_max
Processing Speed Level 5
P
proc_master
Attention & Focus 100%
F
focus_zen
MoCA Test 30/30
C
cogn_peak

Which Test Should I Take?

Depends on what you want to measure or improve. Every test provides a different window into your cognitive profile.

🎮

I'm a gamer

Reaction time and aim accuracy are core to competitive gaming. Start with Reaction Time, then Aim Trainer for visuomotor precision, and Choice Reaction Time to benchmark Hick's Law.

Reaction Time Aim Trainer Choice Reaction Time
💼

I want to test focus

Sustained attention and inhibitory control are critical for deep work. Stroop, Flanker, and Go/No-Go expose exactly where your focus breaks down under interference.

Stroop Test Flanker Test Go/No-Go
🎓

I'm a student

Academic performance correlates with working memory span and fluid intelligence. N-Back and Digit Span measure raw WM capacity; Raven's Matrices measures reasoning ability.

N-Back Test Digit Span Raven's Matrices
✍️

I write or type a lot

Writers and developers benefit from typing speed and verbal memory tests. Cognitive Reflection reveals whether you think fast-and-wrong or slow-and-right — a key editorial skill.

Typing Speed Verbal Memory Cognitive Reflection
🧓

I'm concerned about aging

The MoCA detects age-related cognitive decline. Trail Making Part B and Reaction Time are also highly sensitive to aging — combine all three for a solid picture.

MoCA Test Trail Making Reaction Time
🔬

I want a full profile

Take all 29 tests across two or three sessions for a complete cognitive profile covering speed, memory, inhibition, fluid intelligence, and perception.

All Tests Science Page Leaderboard

How Tests Correlate

People who score well on one test tend to score well on related tests — but not all tests share the same cognitive substrate. The table below shows empirical correlation strength between test pairs (r = Pearson coefficient from 50M+ sessions). See also: pattern recognition vs. IQ and processing speed vs. reaction time.

Test Pair Correlation (r) Explanation
Reaction Time ↔ Aim Trainer 0.68 strong Both load fast motor execution — shared psychomotor speed factor.
Number Memory ↔ Sequence Memory 0.61 strong Both tap working memory span, but different subsystems (verbal vs. spatial).
Reaction Time ↔ Processing Speed 0.54 moderate Overlap in cognitive speed, but SDMT also requires visual search.
Verbal Memory ↔ Number Memory 0.48 moderate Both test short-term storage, but encode different stimulus types.
Typing Speed ↔ Processing Speed 0.43 moderate Both benefit from fast, accurate motor execution.
Sequence Memory ↔ Visual Memory 0.52 moderate Both load the visuospatial sketchpad — different task demands.
Attention ↔ Processing Speed 0.39 moderate Sustained attention supports fast and accurate matching.
Reaction Time ↔ Number Memory 0.21 weak Speed and verbal WM are largely independent cognitive factors.
Typing Speed ↔ Reaction Time 0.18 weak Typing is procedural/motor; simple RT is perceptual — different neural pathways.
Chimp Test ↔ Verbal Memory 0.14 weak Spatial STM and verbal episodic memory recruit distinct brain networks.

Correlations are from matched user sessions where both tests were completed within 24 hours. Directionality adjusted so positive r = both better together.

Frequently Asked Questions

Are these tests medically validated?
They are based on validated neuropsychological paradigms — each test has a named clinical source (listed on the science page). However, they are educational tools, not clinical diagnostics. They should not be used to diagnose any cognitive disorder or replace professional neuropsychological assessment.
How often should I take these tests?
Most tests show meaningful improvement with practice during the first 3–5 sessions, then plateau as you reach your stable baseline. For tracking genuine cognitive change (e.g., effects of exercise, sleep, or training), weekly sessions over 4+ weeks provide a reliable trend. Do not take the same test multiple times in one sitting — fatigue and practice effects will skew results.
Can I actually improve my scores?
Yes — with the right approach per test. Reaction Time improves most with consistent practice and reduced anticipation. Number Memory improves with chunking strategies. Typing Speed improves linearly with deliberate practice. Memory tests are harder to improve beyond your biological working memory ceiling, though strategies help significantly.
What is a good score?
It depends on the test — use the benchmark table above. As a rule of thumb: scoring in the top 25% on any test is solid, top 10% is excellent, and top 1% places you among the best who have ever taken it. Most users are genuinely surprised to find they're above average on several tests.
Why do my scores vary between sessions?
Single-session performance has ±15–30% variance due to fatigue, caffeine, time of day, and device conditions. The 20–29 age bracket shows the lowest variance; older adults show higher session-to-session variability. For the most stable score, take tests mid-morning after adequate sleep.
Do I need to sign up?
No sign-up is required to take any of the 29 tests. Results are temporarily stored in your browser's localStorage. Creating a free account lets you save scores permanently, track improvement over time, and see your position on the global leaderboard.

Track your cognitive baseline

Create a free account to save every result, chart your improvement over weeks, and see how you compare to your exact age group on the global leaderboard.

Create Free Account Read the Science