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remove XAB plugin
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Josh de Leeuw
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@ -1,51 +0,0 @@
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# jspsych-xab plugin
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The XAB-html plugin displays an HTML object stimulus (X). After a short gap, the plugin displays two additional stimuli (A and B). The subject selects which of the two stimuli matches X using the keyboard.
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## Parameters
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Parameters with a default value of *undefined* must be specified. Other parameters can be left unspecified if the default value is acceptable.
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Parameter | Type | Default Value | Description
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----------|------|---------------|------------
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stimuli | array | *undefined* | Array of two or three elements. If it is two elements, then the plugin will show the first element as X and as the target during the A/B portion (the second element will be the foil). If it is three elements, then the first is X the second is the target (A) and the third is the foil (B). This is useful if X and A are not identical, but A is still the correct choice (e.g., a categorization experiment where the goal is to pick the item that is in the same category). Stimuli are html strings.
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left_key | numeric or string | 'Q' | Which key the subject should press to indicate that the target is on the left side.
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right_key | numeric or string | 'P' | Which key the subject should press to indicate that the target is on the right side.
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prompt | string | null | This string can contain HTML markup. Any content here will be displayed below the stimulus. The intention is that it can be used to provide a reminder about the action the subject is supposed to take (e.g., which key to press).
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timing_x | numeric | 1000 | How long to show the X stimulus for in milliseconds.
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timing_xab_gap | numeric | 1000 | How long to show a blank screen in between X and AB in milliseconds.
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timing_ab | numeric | null | How long to show A and B in milliseconds. If the value of this parameter is null, then the stimuli will remain on the screen until a response is given.
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timing_response | numeric | null | The maximum duration to wait for a response, measured from the onset of the AB portion of the trial. If null, then the trial will wait indefinitely for a response.
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## Data Generated
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In addition to the [default data collected by all plugins](overview#datacollectedbyplugins), this plugin collects the following data for each trial.
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Name | Type | Value
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-----|------|------
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stimulus | string | JSON-encoded array of the stimuli used in the trial.
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key_press | numeric | Indicates which key the subject pressed. The value is the [numeric key code](http://www.cambiaresearch.com/articles/15/javascript-char-codes-key-codes) corresponding to the subject's response.
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rt | numeric | The response time in milliseconds for the subject to make a response. The time is measured from when the A and B stimuli first appear on the screen until the subject's response.
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correct | boolean | True if the subject picks the correct answer.
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## Examples
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#### Doing an exact match task
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```javascript
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var block = {
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type: 'xab',
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stimuli: ['A', 'B'],
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prompt: "Press Q if the text you just saw is on the left. Press P if the text you just saw is on the right."
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}
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```
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#### Matching based on a feature
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```javascript
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var block = {
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type: 'xab',
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stimuli: ['A', 'B', 'C'],
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prompt: "Press Q if the text you just saw is on the left. Press P if the text you just saw is on the right."
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}
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```
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@ -1,51 +0,0 @@
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# jspsych-xab plugin
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The XAB plugin displays an image. After a short gap, the plugin displays two additional stimuli (A and B). The subject selects which of the two stimuli matches X using the keyboard.
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## Parameters
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Parameters with a default value of *undefined* must be specified. Other parameters can be left unspecified if the default value is acceptable.
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Parameter | Type | Default Value | Description
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----------|------|---------------|------------
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stimuli | array | *undefined* | Array of two or three elements. If it is two elements, then the plugin will show the first element as X and as the target during the A/B portion (the second element will be the foil). If it is three elements, then the first is X the second is the target (A) and the third is the foil (B). This is useful if X and A are not identical, but A is still the correct choice (e.g., a categorization experiment where the goal is to pick the item that is in the same category). Stimuli can be paths to images, or html strings.
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left_key | numeric or string | 'Q' | Which key the subject should press to indicate that the target is on the left side.
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right_key | numeric or string | 'P' | Which key the subject should press to indicate that the target is on the right side.
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prompt | string | null | This string can contain HTML markup. Any content here will be displayed below the stimulus. The intention is that it can be used to provide a reminder about the action the subject is supposed to take (e.g., which key to press).
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timing_x | numeric | 1000 | How long to show the X stimulus for in milliseconds.
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timing_xab_gap | numeric | 1000 | How long to show a blank screen in between X and AB in milliseconds.
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timing_ab | numeric | null | How long to show A and B in milliseconds. If the value of this parameter is null, then the stimuli will remain on the screen until a response is given.
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timing_response | numeric | null | The maximum duration to wait for a response, measured from the onset of the AB portion of the trial. If null, then the trial will wait indefinitely for a response.
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## Data Generated
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In addition to the [default data collected by all plugins](overview#datacollectedbyplugins), this plugin collects the following data for each trial.
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Name | Type | Value
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-----|------|------
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stimulus | string | JSON-encoded array of the stimuli used in the trial.
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key_press | numeric | Indicates which key the subject pressed. The value is the [numeric key code](http://www.cambiaresearch.com/articles/15/javascript-char-codes-key-codes) corresponding to the subject's response.
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rt | numeric | The response time in milliseconds for the subject to make a response. The time is measured from when the A and B stimuli first appear on the screen until the subject's response.
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correct | boolean | True if the subject picks the correct answer.
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## Examples
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#### Doing an exact match task
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```javascript
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var block = {
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type: 'xab',
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stimuli: ['img/happy_face.png', 'img/sad_face.png'],
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prompt: "Press Q if the face you just saw is on the left. Press P if the face you just saw is on the right."
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}
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```
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#### Matching based on a feature
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```javascript
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var block = {
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type: 'xab',
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stimuli: ['img/happy_joe_face.png', 'img/sad_joe_face.png', 'img/sad_fred_face.png'],
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prompt: "Press Q if the person you just saw is on the left. Press P if the person you just saw is on the right."
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}
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```
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@ -98,5 +98,3 @@ Plugin | Description
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[jspsych‑visual‑search‑circle](jspsych-visual-search-circle) | A customizable visual-search task modelled after [Wang, Cavanagh, & Green (1994)](http://dx.doi.org/10.3758/BF03206946). The subject indicates whether or not a target is present among a set of distractors. The stimuli are displayed in a circle, evenly-spaced, equidistant from a fixation point.
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[jspsych‑vsl‑animate‑occlusion](jspsych-vsl-animate-occlusion) | A visual statistical learning paradigm based on [Fiser & Aslin (2002)](http://dx.doi.org/10.1037//0278-7393.28.3.458). A sequence of stimuli are shown in an oscillatory motion. An occluding rectangle is in the center of the display, and the stimuli change when they are behind the rectangle.
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[jspsych‑vsl‑grid‑scene](jspsych-vsl-grid-scene) | A visual statistical learning paradigm based on [Fiser & Aslin (2001)](http://dx.doi.org/10.1111/1467-9280.00392). A scene made up of individual stimuli arranged in a grid is shown. This plugin can also generate the HTML code to render the stimuli for use in other plugins.
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[jspsych‑xab‑html](jspsych-xab-html) | A two-alternative forced choice task using HTML-formatted stimuli. A target (X) is shown, followed by a brief gap, and then two choices (A & B) are displayed. The subject must pick whichever one matches X (matches is defined however the experimenter wishes; it could be a literal match, or it could be a match on some particular property).
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[jspsych‑xab‑image](jspsych-xab-image) | A two-alternative forced choice task using images. A target (X) is shown, followed by a brief gap, and then two choices (A & B) are displayed. The subject must pick whichever one matches X (matches is defined however the experimenter wishes; it could be a literal match, or it could be a match on some particular property).
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@ -1,32 +0,0 @@
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<!DOCTYPE html>
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<html>
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<head>
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<script src="../jspsych.js"></script>
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<script src="../plugins/jspsych-xab-image.js"></script>
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<link rel="stylesheet" href="../css/jspsych.css"></link>
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<style>
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img {
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width: 300px;
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margin: 20px;
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}
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</style>
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</head>
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<body></body>
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<script>
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var trial = {
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type: 'xab-image',
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stimuli: ['img/happy_face_1.jpg', 'img/happy_face_2.jpg'],
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prompt: "<p>Press Q if the face you just saw is on the left. Press P if the face you just saw is on the right.</p>",
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trial_duration: 2000
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}
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jsPsych.init({
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timeline: [trial],
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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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</script>
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</html>
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/* jspsych-xab.js
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* Josh de Leeuw
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*
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* This plugin runs a single XAB trial, where X is an image presented in isolation, and A and B are choices, with A or B being equal to X.
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* The subject's goal is to identify whether A or B is identical to X.
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*
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* documentation: docs.jspsych.org
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*
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*/
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jsPsych.plugins['xab-html'] = (function() {
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var plugin = {};
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plugin.info = {
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name: 'xab-html',
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description: '',
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parameters: {
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stimuli: {
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type: jsPsych.plugins.parameterType.HTML_STRING,
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pretty_name: 'Stimuli',
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array: true,
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default: undefined,
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description: 'Array of 2 or 3 paths to images.'
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},
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left_key: {
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type: jsPsych.plugins.parameterType.KEYCODE,
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pretty_name: 'Left key',
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default: 'q',
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description: 'Which key the subject should press to indicate that the target is on the left side.'
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},
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right_key: {
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type: jsPsych.plugins.parameterType.KEYCODE,
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pretty_name: 'Right key',
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default: 'p',
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description: 'Which key the subject should press to indicate that the target is on the right side.'
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},
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prompt: {
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type: jsPsych.plugins.parameterType.STRING,
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pretty_name: 'Prompt',
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default: null,
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description: 'Any content here will be displayed below the stimulus.'
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},
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x_duration: {
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type: jsPsych.plugins.parameterType.INT,
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pretty_name: 'X duration',
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default: 1000,
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description: 'How long to show the X stimulus for in milliseconds.'
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},
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x_durationab_gap: {
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type: jsPsych.plugins.parameterType.INT,
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pretty_name: 'X durationab gap',
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default: 1000,
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description: 'How long to show a blank screen in between X and AB in milliseconds.'
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},
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ab_duration: {
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type: jsPsych.plugins.parameterType.INT,
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pretty_name: 'AB duration',
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default: null,
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description: 'How long to show A and B in milliseconds.'
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},
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trial_duration: {
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type: jsPsych.plugins.parameterType.INT,
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pretty_name: 'Trial duration',
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default: null,
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description: 'The maximum duration to wait for a response.'
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}
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}
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}
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plugin.trial = function(display_element, trial) {
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// unpack the stimuli array
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trial.x_path = trial.stimuli[0];
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// if there is only a pair of stimuli, then the first is the target and is shown twice.
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// if there is a triplet, then the first is X, the second is the target, and the third is foil (useful for non-exact-match XAB).
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if (trial.stimuli.length == 2) {
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trial.a_path = trial.stimuli[0];
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trial.b_path = trial.stimuli[1];
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} else {
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trial.a_path = trial.stimuli[1];
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trial.b_path = trial.stimuli[2];
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}
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// how we display the content depends on whether the content is
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// HTML code or an image path.
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display_element.innerHTML = '<div class="jspsych-xab-stimulus" >'+trial.x_path+'</div>';
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// start a timer of length trial.x_duration to move to the next part of the trial
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jsPsych.pluginAPI.setTimeout(function() {
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showBlankScreen();
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}, trial.x_duration);
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function showBlankScreen() {
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// remove the x stimulus
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display_element.innerHTML = '';
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// start timer
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jsPsych.pluginAPI.setTimeout(function() {
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showSecondStimulus();
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}, trial.x_durationab_gap);
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}
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function showSecondStimulus() {
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// randomize whether the target is on the left or the right
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var images = [trial.a_path, trial.b_path];
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var target_left = (Math.floor(Math.random() * 2) === 0); // 50% chance target is on left.
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if (!target_left) {
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images = [trial.b_path, trial.a_path];
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}
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// show the options
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display_element.innerHTML += '<div class="jspsych-xab-stimulus left">'+images[0]+'</div>';
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display_element.innerHTML += '<div class="jspsych-xab-stimulus right">'+images[1]+'</div>';
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if (trial.prompt !== null) {
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display_element.innerHTML += trial.prompt;
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}
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// if ab_duration is > 0, then we hide the stimuli after ab_duration milliseconds
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if (trial.ab_duration > 0) {
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jsPsych.pluginAPI.setTimeout(function() {
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var matches = display_element.querySelectorAll('.jspsych-xab-stimulus');
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for(var i=0; i<matches.length; i++){
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matches[i].style.visibility = 'hidden';
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}
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}, trial.ab_duration);
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}
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// if trial_duration > 0, then we end the trial after trial_duration milliseconds
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if (trial.trial_duration !== null) {
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jsPsych.pluginAPI.setTimeout(function() {
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end_trial({
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rt: null,
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correct: false,
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key: null
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});
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}, trial.trial_duration);
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}
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// create the function that triggers when a key is pressed.
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var after_response = function(info) {
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var correct = false; // true when the correct response is chosen
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if (info.key == trial.left_key) // 'q' key by default
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{
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if (target_left) {
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correct = true;
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}
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} else if (info.key == trial.right_key) // 'p' key by default
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{
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if (!target_left) {
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correct = true;
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}
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}
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info.correct = correct;
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end_trial(info);
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};
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var end_trial = function(info) {
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// kill any remaining setTimeout handlers
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jsPsych.pluginAPI.clearAllTimeouts();
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jsPsych.pluginAPI.cancelKeyboardResponse(keyboardListener);
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// create object to store data from trial
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var trial_data = {
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"rt": info.rt,
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"correct": info.correct,
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"stimulus": JSON.stringify([trial.x_path, trial.a_path, trial.b_path]),
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"key_press": info.key
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};
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display_element.innerHTML = ''; // remove all
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jsPsych.finishTrial(trial_data);
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}
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var keyboardListener = jsPsych.pluginAPI.getKeyboardResponse({
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callback_function: after_response,
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valid_responses: [trial.left_key, trial.right_key],
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rt_method: 'date',
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persist: false,
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allow_held_key: false
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});
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}
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};
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return plugin;
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})();
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@ -1,202 +0,0 @@
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/* jspsych-xab.js
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* Josh de Leeuw
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*
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* This plugin runs a single XAB trial, where X is an image presented in isolation, and A and B are choices, with A or B being equal to X.
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* The subject's goal is to identify whether A or B is identical to X.
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*
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* documentation: docs.jspsych.org
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*
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*/
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jsPsych.plugins['xab-image'] = (function() {
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var plugin = {};
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jsPsych.pluginAPI.registerPreload('xab-image', 'stimuli', 'image');
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plugin.info = {
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name: 'xab-image',
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description: '',
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parameters: {
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stimuli: {
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type: jsPsych.plugins.parameterType.IMAGE,
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pretty_name: 'Stimuli',
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array: true,
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default: undefined,
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description: 'Array of 2 or 3 HTML elements.'
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},
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left_key: {
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type: jsPsych.plugins.parameterType.KEYCODE,
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pretty_name: 'Left key',
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default: 'q',
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description: 'Which key the subject should press to indicate that the target is on the left side.'
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},
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right_key: {
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type: jsPsych.plugins.parameterType.KEYCODE,
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pretty_name: 'Right key',
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default: 'p',
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description: 'Which key the subject should press to indicate that the target is on the right side.'
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},
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prompt: {
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type: jsPsych.plugins.parameterType.STRING,
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pretty_name: 'Prompt',
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default: null,
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description: 'Any content here will be displayed below the stimulus.'
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},
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x_duration: {
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type: jsPsych.plugins.parameterType.INT,
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pretty_name: 'X duration',
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default: 1000,
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description: 'How long to show the X stimulus for in milliseconds.'
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},
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x_durationab_gap: {
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type: jsPsych.plugins.parameterType.INT,
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pretty_name: 'X durationab gap',
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default: 1000,
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description: 'How long to show a blank screen in between X and AB in milliseconds.'
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},
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ab_duration: {
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type: jsPsych.plugins.parameterType.INT,
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pretty_name: 'AB duration',
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default: null,
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description: 'How long to show A and B in milliseconds.'
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},
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trial_duration: {
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type: jsPsych.plugins.parameterType.INT,
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pretty_name: 'Trial duration',
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default: null,
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description: 'The maximum duration to wait for a response.'
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}
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}
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}
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plugin.trial = function(display_element, trial) {
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// unpack the stimuli array
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trial.x_path = trial.stimuli[0];
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// if there is only a pair of stimuli, then the first is the target and is shown twice.
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// if there is a triplet, then the first is X, the second is the target, and the third is foil (useful for non-exact-match XAB).
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if (trial.stimuli.length == 2) {
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trial.a_path = trial.stimuli[0];
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trial.b_path = trial.stimuli[1];
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} else {
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trial.a_path = trial.stimuli[1];
|
||||
trial.b_path = trial.stimuli[2];
|
||||
}
|
||||
|
||||
// how we display the content depends on whether the content is
|
||||
// HTML code or an image path.
|
||||
|
||||
display_element.innerHTML = '<img class="jspsych-xab-stimulus" src="'+trial.x_path+'"></img>';
|
||||
|
||||
|
||||
// start a timer of length trial.x_duration to move to the next part of the trial
|
||||
jsPsych.pluginAPI.setTimeout(function() {
|
||||
showBlankScreen();
|
||||
}, trial.x_duration);
|
||||
|
||||
|
||||
function showBlankScreen() {
|
||||
// remove the x stimulus
|
||||
display_element.innerHTML = '';
|
||||
|
||||
// start timer
|
||||
jsPsych.pluginAPI.setTimeout(function() {
|
||||
showSecondStimulus();
|
||||
}, trial.x_durationab_gap);
|
||||
}
|
||||
|
||||
|
||||
function showSecondStimulus() {
|
||||
|
||||
// randomize whether the target is on the left or the right
|
||||
var images = [trial.a_path, trial.b_path];
|
||||
var target_left = (Math.floor(Math.random() * 2) === 0); // 50% chance target is on left.
|
||||
if (!target_left) {
|
||||
images = [trial.b_path, trial.a_path];
|
||||
}
|
||||
|
||||
// show the options
|
||||
display_element.innerHTML += '<img class="jspsych-xab-stimulus left" src="'+images[0]+'"></img>';
|
||||
display_element.innerHTML += '<img class="jspsych-xab-stimulus right" src="'+images[1]+'"></img>';
|
||||
|
||||
if (trial.prompt !== null) {
|
||||
display_element.innerHTML += trial.prompt;
|
||||
}
|
||||
|
||||
// if ab_duration is > 0, then we hide the stimuli after ab_duration milliseconds
|
||||
if (trial.ab_duration > 0) {
|
||||
jsPsych.pluginAPI.setTimeout(function() {
|
||||
var matches = display_element.querySelectorAll('.jspsych-xab-stimulus');
|
||||
for(var i=0; i<matches.length; i++){
|
||||
matches[i].style.visibility = 'hidden';
|
||||
}
|
||||
}, trial.ab_duration);
|
||||
}
|
||||
|
||||
// if trial_duration > 0, then we end the trial after trial_duration milliseconds
|
||||
if (trial.trial_duration !== null) {
|
||||
jsPsych.pluginAPI.setTimeout(function() {
|
||||
end_trial({
|
||||
rt: null,
|
||||
correct: false,
|
||||
key: null
|
||||
});
|
||||
}, trial.trial_duration);
|
||||
}
|
||||
|
||||
// create the function that triggers when a key is pressed.
|
||||
var after_response = function(info) {
|
||||
|
||||
var correct = false; // true when the correct response is chosen
|
||||
|
||||
if (info.key == trial.left_key) // 'q' key by default
|
||||
{
|
||||
if (target_left) {
|
||||
correct = true;
|
||||
}
|
||||
} else if (info.key == trial.right_key) // 'p' key by default
|
||||
{
|
||||
if (!target_left) {
|
||||
correct = true;
|
||||
}
|
||||
}
|
||||
|
||||
info.correct = correct;
|
||||
|
||||
end_trial(info);
|
||||
|
||||
};
|
||||
|
||||
var end_trial = function(info) {
|
||||
// kill any remaining setTimeout handlers
|
||||
jsPsych.pluginAPI.clearAllTimeouts();
|
||||
|
||||
jsPsych.pluginAPI.cancelKeyboardResponse(keyboardListener);
|
||||
|
||||
// create object to store data from trial
|
||||
var trial_data = {
|
||||
"rt": info.rt,
|
||||
"correct": info.correct,
|
||||
"stimulus": JSON.stringify([trial.x_path, trial.a_path, trial.b_path]),
|
||||
"key_press": info.key
|
||||
};
|
||||
|
||||
display_element.innerHTML = ''; // remove all
|
||||
|
||||
jsPsych.finishTrial(trial_data);
|
||||
}
|
||||
|
||||
var keyboardListener = jsPsych.pluginAPI.getKeyboardResponse({
|
||||
callback_function: after_response,
|
||||
valid_responses: [trial.left_key, trial.right_key],
|
||||
rt_method: 'date',
|
||||
persist: false,
|
||||
allow_held_key: false
|
||||
});
|
||||
}
|
||||
};
|
||||
|
||||
return plugin;
|
||||
})();
|
||||
@ -1,16 +0,0 @@
|
||||
const root = '../../';
|
||||
|
||||
jest.useFakeTimers();
|
||||
|
||||
describe('vsl-grid-scene plugin', function(){
|
||||
|
||||
beforeEach(function(){
|
||||
require(root + 'jspsych.js');
|
||||
require(root + 'plugins/jspsych-vsl-grid-scene.js');
|
||||
});
|
||||
|
||||
test('loads correctly', function(){
|
||||
expect(typeof window.jsPsych.plugins['vsl-grid-scene']).not.toBe('undefined');
|
||||
});
|
||||
|
||||
});
|
||||
Loading…
Reference in New Issue
Block a user