mirror of
https://github.com/jspsych/jsPsych.git
synced 2025-05-10 19:20:55 +00:00
59 lines
5.8 KiB
Markdown
59 lines
5.8 KiB
Markdown
# jspsych-categorize-html
|
|
|
|
The categorize html plugin shows an HTML object on the screen. The subject responds by pressing a key. Feedback indicating the correctness of the response is given.
|
|
|
|
## Parameters
|
|
|
|
In addition to the [parameters available in all plugins](/overview/plugins#parameters-available-in-all-plugins), this plugin accepts the following parameters. Parameters with a default value of *undefined* must be specified. Other parameters can be left unspecified if the default value is acceptable.
|
|
|
|
| Parameter | Type | Default Value | Description |
|
|
| -------------------------- | ---------------- | ------------------------ | ---------------------------------------- |
|
|
| stimulus | html string | *undefined* | The HTML stimulus to display. |
|
|
| choices | array of strings | `jsPsych.ALL_KEYS` | This array contains the key(s) that the subject is allowed to press in order to respond to the stimulus. Keys should be specified as characters (e.g., `'a'`, `'q'`, `' '`, `'Enter'`, `'ArrowDown'`) - see [this page](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key/Key_Values) and [this page (event.key column)](https://www.freecodecamp.org/news/javascript-keycode-list-keypress-event-key-codes/) for more examples. Any key presses that are not listed in the array will be ignored. The default value of `jsPsych.ALL_KEYS` means that all keys will be accepted as valid responses. Specifying `jsPsych.NO_KEYS` will mean that no responses are allowed. |
|
|
| key_answer | string | *undefined* | The key character indicating the correct response. |
|
|
| text_answer | string | "" | A label that is associated with the correct answer. Used in conjunction with the `correct_text` and `incorrect_text` parameters. |
|
|
| correct_text | string | "Correct." | String to show when the correct answer is given. Can contain HTML formatting. The special string `%ANS%` can be used within the string. If present, the plugin will put the `text_answer` for the trial in place of the `%ANS%` string (see example below). |
|
|
| incorrect_text | string | "Wrong." | String to show when the wrong answer is given. Can contain HTML formatting. The special string `%ANS%` can be used within the string. If present, the plugin will put the `text_answer` for the trial in place of the `%ANS%` string (see example below). |
|
|
| 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). |
|
|
| force_correct_button_press | boolean | false | If set to true, then the subject must press the correct response key after feedback is given in order to advance to the next trial. |
|
|
| show_stim_with_feedback | boolean | true | If set to true, then the stimulus will be shown during feedback. If false, then only the text feedback will display during feedback. |
|
|
| show_feedback_on_timeout | boolean | false | If true, then category feedback will be displayed for an incorrect response after a timeout (trial_duration is exceeded). If false, then a timeout message will be shown. |
|
|
| timeout_message | string | "Please respond faster." | The message to show on a timeout non-response. |
|
|
| stimulus_duration | numeric | null | How long to show the stimulus for (milliseconds). If null, then the stimulus is shown until a response is given. |
|
|
| feedback_duration | numeric | 2000 | How long to show the feedback for (milliseconds). |
|
|
| trial_duration | numeric | null | The maximum time allowed for a response. If null, then the experiment will wait indefinitely for a response. |
|
|
|
|
## Data Generated
|
|
|
|
In addition to the [default data collected by all plugins](/overview/plugins#data-collected-by-all-plugins), this plugin collects the following data for each trial.
|
|
|
|
| Name | Type | Value |
|
|
| --------- | ------- | ---------------------------------------- |
|
|
| stimulus | string | Either the path to the image file or the string containing the HTML formatted content that the subject saw on this trial. |
|
|
| response | string | Indicates which key the subject pressed. |
|
|
| rt | numeric | The response time in milliseconds for the subject to make a response. The time is measured from when the stimulus first appears on the screen until the subject's response. |
|
|
| correct | boolean | `true` if the subject got the correct answer, `false` otherwise. |
|
|
|
|
## Examples
|
|
|
|
???+ example "Categorizing HTML content"
|
|
=== "Code"
|
|
```javascript
|
|
var categorization_trial = {
|
|
type: jsPsychCategorizeHtml,
|
|
stimulus: '<p>B</p>',
|
|
key_answer: 'p',
|
|
text_answer: 'letter',
|
|
choices: ['p', 'q'],
|
|
correct_text: "<p class='prompt'>Correct, this is a %ANS%.</p>",
|
|
incorrect_text: "<p class='prompt'>Incorrect, this is a %ANS%.</p>",
|
|
prompt: "<p>Press p for letter. Press q for number.</p>"
|
|
};
|
|
```
|
|
=== "Demo"
|
|
<div style="text-align:center;">
|
|
<iframe src="../plugins/demos/jspsych-categorize-html-demo1.html" width="90%;" height="600px;" frameBorder="0"></iframe>
|
|
</div>
|
|
|
|
<a target="_blank" rel="noopener noreferrer" href="../plugins/demos/jspsych-categorize-html-demo1.html">Open demo in new tab</a>
|