30 Free Cognitive Tests and Perception Questionnaires
30 free, research-based cognitive tests and perception questionnaires. Each is reviewed by a clinician, scored in your browser, and gives you an instant plain-language result. No sign-up, and your answers never leave your device.
Reviewed by Michael Callans, MSW 
Cognitive questions are not all questions about intelligence. You may be noticing brain fog, difficulty organizing tasks, changes in someone’s memory, or differences in mental imagery. This collection brings together educational questionnaires for those experiences, alongside reflections on synesthesia and creativity. The memory tools draw on informant screening research such as IQCODE and AD8, while the Aphantasia Test explores imagery using a VVIQ-informed approach rather than a visual performance task.
Choose according to the experience you want to describe and who the questionnaire is about. The Dementia Test asks about someone you know well; other tools explore your own reported experiences. None of these questionnaires measures IQ, provides a neurological examination, or establishes the cause of cognitive changes. A result can organize observations for a conversation, while a new or worsening difficulty deserves attention beyond what an online score can offer.
Start here
All 30 →Brain Fog Test
The brain fog questionnaire offers a broad self-report starting point for concerns about focus, memory, word finding, and mental fatigue.
Start hereIQ Test: Free Reasoning Quiz
30 original reasoning questions with an estimated performance range, not a certified IQ…
Take the testReaction Time Test
How fast are your reflexes, in milliseconds?
Test my reaction timeAll cognitive and perception tests
IQ Test: Free Reasoning Quiz
30 original reasoning questions with an estimated performance range, not a certified IQ score.
Brain Fog Test
Covers focus, memory, word-finding, and mental fatigue. Brain fog is a symptom, not a diagnosis.
Executive Function Test
An honest screener across six executive domains, from working memory to emotional control. Not a diagnosis.
Dementia Test
Answer about someone you know well. Informed by the validated short IQCODE, with a clear next step.
Memory & Dementia Concern Screen
Informed by the validated AD8, with a clear, doctor-focused next step.
Aphantasia Test
Informed by the validated VVIQ. See where your mind's eye falls, from aphantasia to hyperphantasia.
Synesthesia Test
Explore synesthetic experiences by type. A curiosity tool for a fascinating perceptual trait.
Creativity Test
Measures creative identity, openness, habits, and creative courage, with a full breakdown.
Cognitive Function Test
A five-domain reflection on everyday cognitive lapses, with clear guidance on when to seek care.
Learning Style Quiz
Compare four study preferences, with honest guidance about what helps learning.
Face Blindness Test
Complete the PI20 and understand what its published face-recognition ranges can and cannot show.
Hyperphantasia Test
Explore the vividness of your imagined sights, sounds, and other sensations.
Attention Span Test
Reflect on sustained focus, interruptions, and digital habits over the last month.
Reaction Time Test
Five timed trials, your median reaction time in milliseconds, no signup.
Working Memory Test (Digit Span)
A forward digit span task with your longest recalled sequence, no signup.
Processing Speed Test
A 60-second symbol-matching task with your correct count, no signup.
Stroop Test
Forty color-word trials, your Stroop interference in milliseconds, no signup.
Visual Memory Test
Recall grid patterns that grow until you miss. Your visual span in cells, no signup.
Spatial Reasoning Test (Mental Rotation)
A 12-item mental rotation task with your correct count, no signup.
Giftedness Test (Adult)
Reflect on intensity, curiosity, and overexcitability traits often linked to giftedness.
Inner Monologue Test
Explore how you experience thought: inner speech, imagery, feeling, or sensory awareness.
Aptitude Test
32 original questions across verbal, numerical, logical, and abstract reasoning, with a section breakdown.
Verbal Reasoning Test
24 original verbal reasoning questions with a true, false, or cannot say section and a breakdown.
Logical Reasoning Test
24 original logic questions on syllogisms, ordering puzzles, and conditional rules, with a breakdown.
Numerical Reasoning Test
20 original numerical reasoning questions in words, no calculator needed, with a breakdown.
Abstract Reasoning Test
24 original pattern and inductive reasoning questions in text, with a section breakdown.
Critical Thinking Test
24 original questions on arguments, assumptions, and evidence, with an instant score breakdown.
Multiple Intelligences Test
See your top self-reported strengths across Gardner's eight intelligences, with an honest research caveat.
Thinking Style Test (Left Brain vs Right Brain)
The left brain/right brain idea is a myth. This measures your real analytic vs intuitive thinking style.
Intuition Test
Scores four pieces of intuitive thinking and when to actually trust your gut.
How to choose
| If you want to | Take | Why |
|---|---|---|
| You want to describe everyday cognitive difficulties | Brain Fog Test | This educational screen covers reported symptoms rather than measuring intelligence. |
| You struggle with planning and following through | Executive Function Test | Explore six everyday executive domains without treating the score as an ability test. |
| You are concerned about changes in someone you know well | Dementia Test | This informant questionnaire is informed by the short IQCODE. |
| You want to explore the vividness of mental images | Aphantasia Test | The VVIQ-informed reflection describes imagery experiences rather than memory health. |
| You are curious about experiences linking different senses | Synesthesia Test | This research-informed curiosity tool does not verify synesthesia through performance testing. |
Cognitive and perception tests FAQ
Are these cognitive tests the same as an IQ test?
No. This collection contains questionnaires about reported cognitive experiences, memory concerns, perception, and creativity. It does not include a standardized intelligence examination or timed performance assessment. Read each test’s purpose carefully so that a symptom score or reflective profile is not mistaken for a measure of intelligence.
Who should answer the Dementia Test?
The Dementia Test asks you to answer about someone you know well and draws on the short IQCODE. That differs from reporting only your own impressions about memory. Follow the respondent instructions on the specific page, and discuss concerns with a qualified health professional rather than treating a score as a diagnosis.
Does aphantasia mean my memory is impaired?
The Aphantasia Test asks about the vividness of mental imagery. It does not measure memory impairment or establish why you experience images a particular way. If your concern is a change in everyday remembering, choose a memory-focused route and seek professional advice instead of drawing conclusions from an imagery score.
Can a brain fog score tell me what is causing the problem?
No. The brain fog questionnaire organizes reported difficulties with focus, memory, word finding, and mental fatigue, but it cannot identify their cause. A qualified health professional can consider your circumstances and any new or worsening changes. Do not wait for an online result if you think you are facing a medical emergency.
Cite this source
Psychology.com. (2026, September 27). Free Cognitive Tests and Perception Questionnaires. Psychology.com. https://psychology.com/tests/cognitive-tests
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