mirror of
https://github.com/jspsych/jsPsych.git
synced 2025-05-13 00:58:12 +00:00
103 lines
3.2 KiB
HTML
103 lines
3.2 KiB
HTML
<!doctype html>
|
|
<html>
|
|
|
|
<head>
|
|
<title>jspsych-same-different plugin example</title>
|
|
<!-- jQuery -->
|
|
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
|
|
<!-- jsPsych -->
|
|
<script src="scripts/jspsych.js"></script>
|
|
<script src="scripts/plugins/jspsych-same-different.js"></script>
|
|
<!-- style -->
|
|
<style>
|
|
#jspsych_target {
|
|
margin: 50px auto 50px auto;
|
|
width: 800px;
|
|
font-size:18px;
|
|
text-align: center;
|
|
}
|
|
#instructions {
|
|
text-align: left;
|
|
}
|
|
pre {
|
|
text-align: left;
|
|
}
|
|
img {
|
|
width: 150px;
|
|
}
|
|
</style>
|
|
</head>
|
|
|
|
<body>
|
|
<div id="jspsych_target"></div>
|
|
</body>
|
|
<script type="text/javascript">
|
|
// how many trials?
|
|
var n_trials = 6;
|
|
|
|
// declare an array to hold the stimuli
|
|
var stimuli = [];
|
|
for (var i = 1; i <= 12; i++) {
|
|
stimuli.push("img/cell_img_" + i + ".jpg");
|
|
}
|
|
|
|
var pairs = [];
|
|
var answers = [];
|
|
|
|
for (var i = 0; i < n_trials; i++) {
|
|
// randomly choose the first stim we will show to subject
|
|
var first_stim = stimuli[Math.floor(Math.random() * stimuli.length)];
|
|
// randomly choose whether this trial will be "same" or "different"
|
|
if (Math.floor(Math.random() * 2) === 0) {
|
|
// same trial
|
|
|
|
// add the matching pair to the pairs list
|
|
pairs.push([first_stim, first_stim]);
|
|
|
|
// add the answer to the answers list
|
|
answers.push("same");
|
|
}
|
|
else {
|
|
// different trial
|
|
|
|
// need a second stim that is not the same as the first
|
|
var second_stim = stimuli[Math.floor(Math.random() * stimuli.length)];
|
|
while (second_stim == first_stim) {
|
|
second_stim = stimuli[Math.floor(Math.random() * stimuli.length)];
|
|
}
|
|
|
|
// add the pair
|
|
pairs.push([first_stim, second_stim]);
|
|
|
|
// add the answer
|
|
answers.push("different");
|
|
}
|
|
}
|
|
|
|
// create free-sort block for jspsych
|
|
var same_diff_block = {
|
|
type: 'same-different',
|
|
stimuli: pairs,
|
|
answer: answers,
|
|
prompt: "<p>Press Q if the images were the same. Press P if they were different.</p>"
|
|
};
|
|
|
|
// preload images
|
|
// call start() when loading is complete
|
|
jsPsych.preloadImages(stimuli, start);
|
|
|
|
// launch jspsych experiment
|
|
function start() {
|
|
jsPsych.init({
|
|
display_element: $('#jspsych_target'),
|
|
experiment_structure: [same_diff_block],
|
|
on_finish: function(data) {
|
|
$('#jspsych_target').append($("<pre>", {
|
|
html: JSON.stringify(data, undefined, 2)
|
|
}));
|
|
}
|
|
});
|
|
}
|
|
</script>
|
|
|
|
</html> |