Reaction Time Test
React as fast as possible when the visual signal appears. Track your reaction time in milliseconds.
Free, private, no install. Start in seconds and track your progress over time.
React as fast as possible when the visual signal appears. Track your reaction time in milliseconds.
Multiple rounds with colors and sound cues. Tracks reaction time, accuracy and response control.
Find target figures hidden among overlapping distractors. Trains visual scanning and resistance to visual clutter.
React as fast as possible when the visual signal appears. Track your reaction time in milliseconds.
Multiple rounds with colors and sound cues. Tracks reaction time, accuracy and response control.
Remember highlighted tiles on a 3×3 grid. Simple format, surprisingly telling.
Transcribe a short text. Score balances WPM and error rate to avoid "mashing".
Find target figures hidden among overlapping distractors. Trains visual scanning and resistance to visual clutter.
Name the color of the word, not the word itself. A classic measure of executive control.
Respond to the middle arrow while flankers try to trick you. Tests focus and conflict resolution.
Go on arrows, but stop when the red square appears. A compact impulse-control probe.
Press only when the current letter matches the one from two steps ago. Simple rule, tough control.
Remember a short sequence of 5 symbols, colors or shapes, then reproduce it accurately under time pressure.
Convert letters to digits using a legend, then keep a running sum in your head. Measures processing speed and working memory.
Find the one shape that differs from the rest. Difficulty adapts as distractors become more similar and noisy.
Try to hit the exact center. A small point appears near the center and shifts position every 1.5 seconds.
Global Mind Tests brings research-inspired cognitive tasks to your browser. Each test is based on a well-established experimental paradigm from cognitive science and adapted for short, practical self-tracking.
Instead of long questionnaires or abstract scores, you interact directly with tasks that probe attention, reaction speed, working memory and cognitive control. The interface stays minimal on purpose, so performance reflects your decisions, not distractions or interpretation.
The platform builds on decades of research in experimental psychology and neuroscience. Classic laboratory paradigms are translated into browser-based tasks with controlled stimuli, consistent rules and repeatable measurement.
While individual tests differ in structure and difficulty, they share the same foundations: clearly defined cognitive demands, objective response criteria and metrics designed to capture performance over repeated sessions.
If you want to explore the scientific background, start with broad, reputable sources:
Each test focuses on a specific cognitive process and presents a controlled sequence of stimuli that requires fast, accurate decisions. The structure is intentionally simple so that results reflect cognitive performance, not learning complex rules.
Most tasks consist of multiple trials. Individual responses can vary, so results are derived from aggregated performance rather than single actions. This makes comparisons over time more meaningful and reduces random noise.
Results are designed to be easy to read and comparable across time. Each test uses a scoring system tailored to its cognitive demands, so performance can be interpreted consistently without technical details.
Percentiles show how your result compares to a broad reference distribution. A higher percentile means your performance is above the average level observed across a large, mixed population of users, while lower percentiles indicate results closer to or below the typical range.
To reduce random fluctuations, scores are based on aggregated performance rather than single responses. This makes trends over repeated sessions more informative than any one attempt.
Global Mind Tests is grounded in decades of research from cognitive science and experimental psychology. The tasks are inspired by well-established laboratory paradigms that have been widely studied and documented in scientific literature.
Each test is designed with consistency and repeatability in mind, so results can be meaningfully compared over time under similar conditions.
What we do not do: we do not diagnose medical or psychological conditions, we do not prescribe treatment, and we do not replace professional evaluation.
How to interpret results: treat single sessions as a snapshot. Look for trends across repeated sessions and compare results under similar conditions (same device, similar environment).
Contact & accountability: questions, feedback or corrections are welcome via the Contact page.
All results are stored locally in your browser. No data is transmitted to external servers, and no one has access to your results except you on your own device.
Students, gamers, professionals, or anyone curious about attention, speed and working memory. Use the tests to monitor your training, warm up your focus, or just learn how your mind responds under pressure.