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Take a free 20-round Stroop Test to check attention, accuracy and response time, then see your Stroop effect results. 🎯 How accurately can you focus when a word and its font color do not match? Stroop Test is a free, interactive color-word test for checking attention, accuracy and response control directly in Chrome. Complete 20 short rounds and immediately view your results without registration, an account or sending your answers to a server. The task is simple: identify the font color and ignore the meaning of the word. For example, the word “RED” may appear in green letters. In that case, the correct answer is GREEN. 🧠 WHAT IS THE STROOP TEST? The classic Stroop task is based on the conflict between reading a word and identifying the color in which it appears. Reading is highly automatic, so a conflicting word can make the color decision slower or less accurate. This difference is called the Stroop effect. The extension turns the task into a short, computerized Stroop effect test with clear instructions, an optional demonstration and an immediate result screen. 🧭 HOW DOES THE STROOP TEST WORK? 1. Start with the optional practice round or go directly to the full test. 2. Look at the font color, not the meaning of the word. 3. Choose RED, GREEN, BLUE or YELLOW with a mouse, touchscreen or keyboard. 4. Complete all 20 matching and conflicting rounds. 5. Review your accuracy, response time and calculated Stroop effect. This color Stroop test provides immediate feedback after every answer. The task then moves automatically to the next round. 📊 WHAT DOES THE STROOP TEST MEASURE? After the final round, the result screen shows: • Overall accuracy • Correct answers out of 20 • Average response time for matching rounds • Average response time for conflicting rounds • Stroop effect in milliseconds • Inhibitory Control Index from 0 to 100 • Adaptive attention level • A simple interpretation of the session The Stroop effect is calculated from the difference between your average response time in matching and conflicting rounds. It provides context for the session, while the accuracy and timing values let you see the underlying measurements. 🎨 MATCHING AND CONFLICTING COLOR-WORD ROUNDS In a matching round, the word and font color are the same. In a conflicting round, they disagree. This congruent and incongruent Stroop format creates the cognitive interference at the center of the task. Twenty rounds give the result more context than one or two answers. The extension also adjusts the share of conflicting combinations gradually between completed sessions, while the basic rules remain unchanged. 🔁 REPEAT AND COMPARE You can repeat the test immediately from the result screen. Try to use the same device, browser window and input method when comparing sessions, because display timing, input latency, attention and fatigue can affect response time. If you usually look for a Stroop test online, this extension gives you the complete interactive task in a clean Chrome tab. There are no forms to complete and no automatic redirect after the result. 🔒 PRIVATE BY DESIGN The extension does not read the websites you visit. It does not request browsing-history, cookie, location, microphone, camera or page-content permissions. Chrome storage is used only to remember your selected language, adaptive difficulty and recent test results. Your information stays on your device and is not sold or transferred to third parties. 🌍 CLEAR, ACCESSIBLE INTERFACE • Large color buttons and readable instructions • Mouse, touchscreen and keyboard controls • Optional practice before the full test • Immediate answer feedback • Responsive layout for desktop and Chromebook screens • Reduced-motion support based on system settings • English, Russian, Hindi and German interface 💡 TIPS FOR MORE CONSISTENT COMPARISONS Use the same browser, screen and input method. Close heavy background tasks and test under similar conditions. Repeating the sequence can improve familiarity, so treat changes across sessions as an informal personal reference rather than a clinical measurement. ⚠️ IMPORTANT This Stroop Test is intended for entertainment, practice and informal self-assessment. It is not a medical, neurological, psychological or clinical diagnostic tool. Results may be influenced by hardware latency, browser performance, fatigue, practice and surrounding conditions. 🚀 Twenty short rounds. Immediate results. No registration. Start the Stroop Test and see how accurately you respond when colors and words conflict.