Reaction Tests
Measure different aspects of your cognitive speed. Each test targets a specific ability — from basic reflexes to decision-making and impulse control.
Simple Reaction Test
React to a single visual stimulus as fast as you can. The most basic measure of your response speed.
Choice Reaction Test
Identify and click the correct target among distractors. Measures decision-making speed on top of reaction time.
Audio Reaction Test
React to a beep sound instead of a visual stimulus. Measures your auditory processing and response speed.
Go/No-Go Test
React to green targets but inhibit your response to red ones. Measures impulse control and response inhibition.
Why Test Your Reaction Time?
Reaction time reflects how fast your brain processes information and sends signals to your muscles. It is a key metric in sports science, cognitive psychology, and clinical neurology.
Different reaction tests measure different abilities. Simple RT tests pure reflexes. Choice RT adds decision-making. Audio RT tests a different sensory pathway. Go/No-Go measures your ability to suppress automatic responses — a core executive function.
Regular testing helps you establish a personal baseline and track improvement over time. All tests are free, run in your browser, and store results locally.
Frequently Asked Questions
What is reaction time?
Reaction time is the interval between a stimulus (visual, auditory, or other) and your physical response. It includes sensory processing, decision-making, and motor execution.
Which test should I start with?
Start with the Simple Reaction Test to get your baseline visual reaction time. Then try other variants to measure different cognitive abilities like decision-making and impulse control.
Are these tests scientifically valid?
These tests use paradigms from cognitive psychology research (simple RT, choice RT, go/no-go). While not clinical instruments, they provide useful benchmarks for self-assessment and tracking improvement.
Is my data stored securely?
All data stays in your browser localStorage. Nothing is sent to any server. Your results are private and only accessible on your device.
Can I improve my reaction time?
Yes. Regular practice, adequate sleep, physical exercise, and reducing screen fatigue can improve reaction times. Consistent practice with these tests helps track your progress.