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https://github.com/jspsych/jsPsych.git
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119 lines
3.8 KiB
HTML
119 lines
3.8 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>My experiment</title>
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<script src="../packages/jspsych/dist/index.browser.js"></script>
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<script src="../packages/plugin-html-keyboard-response/dist/index.browser.js"></script>
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<script src="../packages/plugin-image-keyboard-response/dist/index.browser.js"></script>
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<script src="../packages/plugin-preload/dist/index.browser.js"></script>
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<link rel="stylesheet" href="../packages/jspsych/css/jspsych.css">
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</head>
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<body></body>
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<script>
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/* initialize jsPsych */
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var jsPsych = initJsPsych({
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on_finish: function () {
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jsPsych.data.displayData();
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}
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});
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/* create timeline */
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var timeline = [];
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/* preload images */
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var preload = {
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type: jsPsychPreload,
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images: ['img/blue.png', 'img/orange.png']
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};
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timeline.push(preload);
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/* define welcome message trial */
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var welcome = {
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type: jsPsychHtmlKeyboardResponse,
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stimulus: "Welcome to the experiment. Press any key to begin."
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};
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timeline.push(welcome);
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/* define instructions trial */
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var instructions = {
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type: jsPsychHtmlKeyboardResponse,
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stimulus: `
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<p>In this experiment, a circle will appear in the center
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of the screen.</p><p>If the circle is <strong>blue</strong>,
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press the letter F on the keyboard as fast as you can.</p>
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<p>If the circle is <strong>orange</strong>, press the letter J
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as fast as you can.</p>
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<div style='width: 700px;'>
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<div style='float: left;'><img src='img/blue.png'></img>
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<p class='small'><strong>Press the F key</strong></p></div>
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<div style='float: right;'><img src='img/orange.png'></img>
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<p class='small'><strong>Press the J key</strong></p></div>
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</div>
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<p>Press any key to begin.</p>
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`,
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post_trial_gap: 2000
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};
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timeline.push(instructions);
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/* define trial stimuli array for timeline variables */
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var test_stimuli = [
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{ stimulus: "img/blue.png", correct_response: 'f' },
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{ stimulus: "img/orange.png", correct_response: 'j' }
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];
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/* define fixation and test trials */
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var fixation = {
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type: jsPsychHtmlKeyboardResponse,
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stimulus: '<div style="font-size:60px;">+</div>',
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choices: "NO_KEYS",
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trial_duration: function () {
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return jsPsych.randomization.sampleWithoutReplacement([250, 500, 750, 1000, 1250, 1500, 1750, 2000], 1)[0];
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},
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data: {
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task: 'fixation'
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}
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};
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var test = {
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type: jsPsychImageKeyboardResponse,
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stimulus: jsPsych.timelineVariable('stimulus'),
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choices: ['f', 'j'],
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data: {
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task: 'response',
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correct_response: jsPsych.timelineVariable('correct_response')
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},
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on_finish: function (data) {
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data.correct = jsPsych.pluginAPI.compareKeys(data.response, data.correct_response);
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}
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};
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/* define test procedure */
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var test_procedure = {
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timeline: [fixation, test],
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timeline_variables: test_stimuli,
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repetitions: 5,
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randomize_order: true
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};
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timeline.push(test_procedure);
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/* define debrief */
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var debrief_block = {
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type: jsPsychHtmlKeyboardResponse,
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stimulus: function () {
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var trials = jsPsych.data.get().filter({ task: 'response' });
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var correct_trials = trials.filter({ correct: true });
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var accuracy = Math.round(correct_trials.count() / trials.count() * 100);
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var rt = Math.round(correct_trials.select('rt').mean());
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return `<p>You responded correctly on ${accuracy}% of the trials.</p>
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<p>Your average response time was ${rt}ms.</p>
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<p>Press any key to complete the experiment. Thank you!</p>`;
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}
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};
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timeline.push(debrief_block);
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/* start the experiment */
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jsPsych.run(timeline);
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</script>
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</html> |