{"id":66816,"date":"2026-10-15T11:47:04","date_gmt":"2026-10-15T06:17:04","guid":{"rendered":"https:\/\/www.quickonlinetips.com\/archives\/?page_id=66816"},"modified":"2026-10-15T11:47:30","modified_gmt":"2026-10-15T06:17:30","slug":"stroop-test","status":"publish","type":"page","link":"https:\/\/www.quickonlinetips.com\/archives\/games\/stroop-test\/","title":{"rendered":"Stroop Test: Online Color Word Brain Game"},"content":{"rendered":"<p>Try the famous <strong>Stroop test<\/strong>, a quick brain game from psychology. Color words like RED and BLUE appear in a different ink color. Your job is to click the color of the ink, not the word you read. It is harder than it sounds, because your brain reads words automatically. 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.qt-lb{display:inline-flex;width:44px;height:44px;border-radius:50%;align-items:center;justify-content:center;font-weight:700;font-size:17px;background:#fff;color:#1A202C;border:2px solid var(--qt-accent);margin:3px} .qt-tool .qt-lb.qt-bonus{background:#E53E3E;color:#fff;border-color:#E53E3E} .qt-tool .qt-8{width:230px;height:230px;border-radius:50%;margin:16px auto;background:radial-gradient(circle at 35% 30%,#666,#000 62%);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 24px rgba(0,0,0,.35)} .qt-tool .qt-8 span{width:116px;height:116px;border-radius:50%;background:radial-gradient(circle,#2747a8,#0b1a4a);color:#fff;display:flex;align-items:center;justify-content:center;text-align:center;font-size:13px;font-weight:700;padding:16px;box-sizing:border-box;line-height:1.25;transition:opacity .3s} .qt-tool .qt-shake{animation:qt-shake .7s} @keyframes qt-shake{0%,100%{transform:translate(0)}20%{transform:translate(-12px,4px) 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.qt-sel{background:#BEE3F8;border-color:#3182CE} .qt-tool .qt-bad{background:#FED7D7;border-color:#E53E3E} .qt-tool select{-webkit-appearance:none;-moz-appearance:none;appearance:none;padding-right:40px;cursor:pointer;border:2px solid #90B4DA;font-weight:600;background-color:#fff;background-image:url(\"data:image\/svg+xml,%3Csvg xmlns='http:\/\/www.w3.org\/2000\/svg' viewBox='0 0 14 9'%3E%3Cpath d='M1.5 1.5l5.5 5.5 5.5-5.5' fill='none' stroke='%232B6CB0' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'\/%3E%3C\/svg%3E\");background-repeat:no-repeat;background-position:right 14px center;background-size:14px 9px} .qt-tool select:hover{border-color:var(--qt-accent);background-color:#F4F8FD} .qt-tool select::-ms-expand{display:none} .qt-next{margin:0 0 1.75em} .qt-next .qt-next-h{font-size:14px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:#4A5568;margin:0 0 8px} .qt-next-g{display:grid;grid-template-columns:repeat(3,1fr);gap:8px} .qt-next-g a{display:flex;align-items:center;min-height:46px;padding:9px 12px;border:1px solid #AEC3DB;border-radius:8px;background:#F4F8FD;color:#215387;font-weight:600;font-size:15px;line-height:1.3;text-decoration:none} .qt-next-g a:hover,.qt-next-g a:focus{background:#E3EEFF;border-color:#2B6CB0;text-decoration:none} @media (max-width:600px){.qt-next-g{grid-template-columns:repeat(2,1fr)}}<\/style>\n<div class=\"qt-tool\" id=\"qt-st\">\n<div class=\"qt-grid\">\n<div class=\"qt-field\"><label for=\"qt-st-mode\">Words<\/label><select id=\"qt-st-mode\"><option value=\"mix\" selected>Mixed (classic test)<\/option><option value=\"diff\">Always clashing (hard)<\/option><option value=\"same\">Always matching (warm-up)<\/option><\/select><\/div>\n<\/div>\n<div class=\"qt-stats\">\n<div class=\"qt-stat\"><span class=\"qt-num\" id=\"qt-st-ok\">0<\/span><span class=\"qt-lab\">Correct<\/span><\/div>\n<div class=\"qt-stat\"><span class=\"qt-num\" id=\"qt-st-bad\">0<\/span><span class=\"qt-lab\">Mistakes<\/span><\/div>\n<div class=\"qt-stat\"><span class=\"qt-num\" id=\"qt-st-rt\">\u2013<\/span><span class=\"qt-lab\">Avg reaction<\/span><\/div>\n<div class=\"qt-stat\"><span class=\"qt-num\" id=\"qt-st-t\">45<\/span><span class=\"qt-lab\">Seconds<\/span><\/div>\n<div class=\"qt-stat\"><span class=\"qt-num\" id=\"qt-st-best\">0<\/span><span class=\"qt-lab\">Best<\/span><\/div>\n<\/div>\n<div style=\"background:#fff;border-radius:16px;padding:18px 10px;margin:12px auto;max-width:520px;box-shadow:0 4px 14px rgba(0,0,0,.1)\">\n<p id=\"qt-st-word\" style=\"font-size:clamp(44px,12vw,80px);font-weight:900;text-align:center;margin:0;letter-spacing:2px;color:#1A202C\">READY?<\/p>\n<\/div>\n<div class=\"qt-row\" id=\"qt-st-btns\" style=\"justify-content:center\"><\/div>\n<div class=\"qt-status\" id=\"qt-st-msg\" aria-live=\"polite\" style=\"text-align:center\"><\/div>\n<div class=\"qt-row\" style=\"justify-content:center\"><button type=\"button\" class=\"qt-btn qt-btn-big\" id=\"qt-st-go\">Start the test<\/button><\/div>\n<\/div>\n<p><script>(function () { function qtReady(fn) { if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', fn); } else { fn(); } } function qtCopy(text, statusEl, okMsg) { function done(ok) { if (statusEl) { statusEl.textContent = ok ? (okMsg || 'Copied to clipboard.') : 'Press Ctrl+C (or Cmd+C) to copy.'; } } function fallback() { var ta = document.createElement('textarea'); ta.value = text; ta.setAttribute('readonly', ''); ta.style.position = 'fixed'; ta.style.top = '-1000px'; document.body.appendChild(ta); ta.select(); var ok = false; try { ok = document.execCommand('copy'); } catch (e) { ok = false; } document.body.removeChild(ta); done(ok); } if (navigator.clipboard) { if (window.isSecureContext) { navigator.clipboard.writeText(text).then(function () { done(true); }, fallback); return; } } fallback(); } function qtRand32() { var c = window.crypto || window.msCrypto; if (c) { if (c.getRandomValues) { var a = new Uint32Array(1); c.getRandomValues(a); return a[0]; } } return Math.floor(Math.random() * 4294967296); } function qtRandInt(range) { if (range === 4294967296) { return qtRand32(); } var limit = Math.floor(4294967296 \/ range) * range; var x = qtRand32(); while (x >= limit) { x = qtRand32(); } return x % range; }  qtReady(function () { var box = document.getElementById('qt-st'); if (!box) { return; } function $(x) { return document.getElementById('qt-st-' + x); } var C = [['RED', '#E53E3E'], ['BLUE', '#3182CE'], ['GREEN', '#2F855A'], ['PURPLE', '#805AD5']]; var ink, word, shownAt, playing = false, timer = null, left, stats, best = 0; try { best = +(localStorage.getItem('qt-st-best') || 0); } catch (e) { best = 0; } function avg(a) { if (!a.length) { return 0; } return Math.round(a.reduce(function (s, v) { return s + v; }, 0) \/ a.length); } function next() { ink = qtRandInt(4); var mode = $('mode').value; if (mode === 'same') { word = ink; } else if (mode === 'diff') { word = (ink + 1 + qtRandInt(3)) % 4; } else { word = qtRandInt(2) ? ink : (ink + 1 + qtRandInt(3)) % 4; } var w = $('word'); w.textContent = C[word][0]; w.style.color = C[ink][1]; shownAt = performance.now(); } function paint() { $('ok').textContent = stats.ok; $('bad').textContent = stats.bad; $('rt').textContent = stats.times.length ? avg(stats.times) + ' ms' : '\u2013'; $('best').textContent = best; } function end() { clearInterval(timer); playing = false; $('word').textContent = 'Done!'; $('word').style.color = ''; if (stats.ok > best) { best = stats.ok; try { localStorage.setItem('qt-st-best', String(best)); } catch (e) { best = stats.ok; } } paint(); var s = avg(stats.same), d = avg(stats.diff); var extra = (s ? (d ? ' Matching words: ' + s + ' ms. Clashing words: ' + d + ' ms, that is your Stroop effect of ' + (d - s) + ' ms.' : '') : ''); $('msg').textContent = 'You named ' + stats.ok + ' ink colors correctly with ' + stats.bad + ' mistakes.' + extra; $('go').textContent = 'Play again'; } function start() { clearInterval(timer); stats = { ok: 0, bad: 0, times: [], same: [], diff: [] }; playing = true; left = 45; $('t').textContent = left; $('msg').textContent = 'Click the color of the INK, not the word!'; $('go').textContent = 'Restart'; timer = setInterval(function () { left--; $('t').textContent = left; if (0 >= left) { end(); } }, 1000); paint(); next(); } function answer(i) { if (!playing) { return; } var dt = Math.round(performance.now() - shownAt); if (i === ink) { stats.ok++; stats.times.push(dt); if (word === ink) { stats.same.push(dt); } else { stats.diff.push(dt); } } else { stats.bad++; $('msg').textContent = 'Oops! The ink was ' + C[ink][0].toLowerCase() + '. Look at the color, not the word.'; } paint(); next(); } var A = $('btns'); C.forEach(function (c, i) { var b = document.createElement('button'); b.type = 'button'; b.className = 'qt-btn'; b.textContent = c[0].charAt(0) + c[0].slice(1).toLowerCase() + ' (' + (i + 1) + ')'; b.style.background = c[1]; b.style.borderColor = c[1]; b.style.color = '#fff'; b.style.minWidth = '110px'; b.addEventListener('click', function () { answer(i); }); A.appendChild(b); }); document.addEventListener('keydown', function (e) { if (e.target.tagName === 'SELECT') { return; } var k = +e.key; if (k > 0) { if (5 > k) { answer(k - 1); } } }); $('go').addEventListener('click', start); $('mode').addEventListener('change', function () { if (playing) { start(); } }); stats = { ok: 0, bad: 0, times: [], same: [], diff: [] }; paint(); }); })();<\/script><\/p>\n<div class=\"qt-next\">\n<p class=\"qt-next-h\">Play next<\/p>\n<div class=\"qt-next-g\"><a href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/tic-tac-toe\/\">Tic Tac Toe<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/hangman\/\">Hangman<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/word-search\/\">Word Search<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/rock-paper-scissors\/\">Rock Paper Scissors<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/truth-or-dare\/\">Truth or Dare Generator<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/halloween-word-search\/\">Halloween Word Search<\/a><\/div>\n<\/div>\n<p><strong>Quick answer:<\/strong> Press <strong>Start the test<\/strong>, then for each word click the button that matches its ink color (or press keys 1 to 4). Ignore what the word says. After 45 seconds you see how many you named correctly, your average reaction time, and your personal Stroop effect: how much slower you are when the word and ink clash.<\/p>\n<h2>How the Stroop test works<\/h2>\n<ol>\n<li>A color word is shown in colored ink, for example the word BLUE printed in red.<\/li>\n<li>Click the ink color: in that example, red.<\/li>\n<li>Some words match their ink and some clash. Clashing words take longer because reading gets in the way.<\/li>\n<li>The difference between those two reaction times is your Stroop effect.<\/li>\n<\/ol>\n<h2>What is the Stroop effect?<\/h2>\n<p>In 1935 the American psychologist John Ridley Stroop showed that people take longer to name the ink color of a word when the word spells a different color. Reading is so automatic that the brain has to work to block it out. The test is still used in research on attention, self-control and processing speed.<\/p>\n<table class=\"qt-ref\">\n<thead>\n<tr>\n<th>Mode<\/th>\n<th>What it shows<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Always matching<\/td>\n<td>Your baseline speed, word and ink agree<\/td>\n<\/tr>\n<tr>\n<td>Mixed (classic)<\/td>\n<td>Your Stroop effect: clash time minus match time<\/td>\n<\/tr>\n<tr>\n<td>Always clashing<\/td>\n<td>The hardest version, pure attention control<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Tips for a better score<\/h2>\n<ul>\n<li><strong>Blur your focus slightly.<\/strong> Look at the color as a patch, not as letters.<\/li>\n<li><strong>Use the keyboard.<\/strong> Keys 1 to 4 are faster than moving a mouse.<\/li>\n<li><strong>Accuracy first.<\/strong> Mistakes cost more than a slightly slower answer.<\/li>\n<\/ul>\n<p>This is a fun brain game, not a medical test. For more quick challenges, try the <a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/reaction-time-test\/\">reaction time test<\/a>, the <a href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/times-tables-game\/\">times tables game<\/a> or the <a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/typing-test\/\">typing test<\/a>.<\/p>\n<h2>FAQ<\/h2>\n<h3>What is a good Stroop test score?<\/h3>\n<p>Many adults name 35 to 55 colors correctly in 45 seconds, with a Stroop effect of about 50 to 150 milliseconds. Practice usually improves both.<\/p>\n<h3>Why are there only four colors?<\/h3>\n<p>Four clearly different colors make the test fair on every screen and easy to answer with keys 1 to 4.<\/p>\n<h2>More free games and tools<\/h2>\n<div class=\"qt-cards\"><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/tic-tac-toe\/\"><strong>Tic Tac Toe<\/strong><span>Play X and O against the computer or a friend.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/hangman\/\"><strong>Hangman<\/strong><span>Guess the word one letter at a time.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/word-search\/\"><strong>Word Search<\/strong><span>Find hidden words in themed puzzles.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/rock-paper-scissors\/\"><strong>Rock Paper Scissors<\/strong><span>Play rock paper scissors against the computer.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/truth-or-dare\/\"><strong>Truth or Dare Generator<\/strong><span>Random truth questions and dares for parties.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/halloween-word-search\/\"><strong>Halloween Word Search<\/strong><span>Spooky themed word search puzzles.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/christmas-word-search\/\"><strong>Christmas Word Search<\/strong><span>Holiday word search puzzles for all ages.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/christmas-trivia\/\"><strong>Christmas Trivia Quiz<\/strong><span>Ten festive questions with answers.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/charades-generator\/\"><strong>Charades Generator<\/strong><span>Random words to act out, with timer and scores.<\/span><\/a><\/div>\n<p>See all of them on the <a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/\">QuickOnlineTips free online tools<\/a> page and the <a href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/\">free online games<\/a> page.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Try the famous Stroop test, a quick brain game from psychology. Color words like RED and BLUE appear in a different ink color. Your job is to click the color of the ink, not the word you read. It is harder than it sounds, because your brain reads words automatically. See how many you get&#8230;<\/p>\n","protected":false},"author":4,"featured_media":66836,"parent":66148,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-66816","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages\/66816","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/comments?post=66816"}],"version-history":[{"count":1,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages\/66816\/revisions"}],"predecessor-version":[{"id":66826,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages\/66816\/revisions\/66826"}],"up":[{"embeddable":true,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages\/66148"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/media\/66836"}],"wp:attachment":[{"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/media?parent=66816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}