jsPsych/docs/plugins/cloze.md
2025-01-07 18:26:56 +00:00

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# cloze
Current version: 2.0.0. [See version history](https://github.com/jspsych/jsPsych/blob/main/packages/plugin-cloze/CHANGELOG.md).
This plugin displays a text with certain words omitted. Participants are asked to replace the missing items. Responses are recorded when clicking a button. Responses can be evaluated and a function is called in case of either differences or incomplete answers, making it possible to inform participants about mistakes before proceeding.
## Parameters
In addition to the [parameters available in all plugins](../overview/plugins.md#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 |
| ------------- | -------- | ------------------ | ---------------------------------------- |
| text | string | *undefined* | The cloze text to be displayed. Blanks are indicated by %% signs and automatically replaced by input fields. If there is a correct answer you want the system to check against, it must be typed between the two percentage signs (i.e. % correct solution %). To input multiple correct answers, add a / between each answer (i.e. %correct/alsocorrect%). |
| button_text | string | OK | Text of the button participants have to press for finishing the cloze test. |
| check_answers | boolean | false | Boolean value indicating if the answers given by participants should be compared against a correct solution given in the text (between % signs) after the button was clicked. If ```true```, answers are checked and in case of differences, the ```mistake_fn``` is called. In this case, the trial does not automatically finish. If ```false```, no checks are performed and the trial automatically ends when clicking the button. |
| allow_blanks | boolean | true | Boolean value indicating if the answers given by participants should be checked for completion after the button was clicked. If ```true```, answers are not checked for completion and blank answers are allowed. The trial will then automatically finish upon the clicking the button. If ```false```, answers are checked for completion, and in case there are some fields with missing answers, the ```mistake_fn``` is called. In this case, the trial does not automatically finish. |
| case_sensitivity | boolean | true | Boolean value indicating if the answers given by participants should also be checked to have the right case along with correctness. If set to ```false```, case is disregarded and participants may type in whatever case they please. |
| mistake_fn | function | ```function(){}``` | Function called if ```check_answers``` is set to ```true``` and there is a difference between the participant's answers and the correct solution provided in the text, or if ```allow_blanks``` is set to ```false``` and there is at least one field with a blank answer. |
| autofocus | boolean | true | Boolean value indicating if the first input field should be focused when the trial starts. Enabled by default, but may be disabled especially if participants are using screen readers. |
## Data Generated
In addition to the [default data collected by all plugins](../overview/plugins.md#data-collected-by-all-plugins), this plugin collects the following data for each trial.
| Name | Type | Value |
| -------- | ---------------- | --------------------------- |
| response | array of strings | Answers the partcipant gave |
## Install
Using the CDN-hosted JavaScript file:
```js
<script src="https://unpkg.com/@jspsych/plugin-cloze@2.2.0"></script>
```
Using the JavaScript file downloaded from a GitHub release dist archive:
```js
<script src="jspsych/plugin-cloze.js"></script>
```
Using NPM:
```
npm install @jspsych/plugin-cloze
```
```js
import cloze from '@jspsych/plugin-cloze';
```
## Examples
???+ example "Simple cloze using default settings (no check against correct solution, no custom button text)"
=== "Code"
```javascript
var cloze_trial = {
type: jsPsychCloze,
text: 'The %% is the largest terrestrial mammal. It lives in both %% and %%.'
};
```
=== "Demo"
<div style="text-align:center;">
<iframe src="../../demos/jspsych-cloze-demo1.html" width="90%;" height="500px;" frameBorder="0"></iframe>
</div>
<a target="_blank" rel="noopener noreferrer" href="../../demos/jspsych-cloze-demo1.html">Open demo in new tab</a>
???+ example "Cloze example using default settings with completion checking and custom error handling"
=== "Code"
```javascript
var cloze_trial = {
type: jsPsychCloze,
text: 'Science notebooks have a %%-colored front cover. Math notebooks have a %%-colored front cover.',
allow_blanks: false,
mistake_fn: function() { alert('Please fill in all blanks.'); }
};
```
=== "Demo"
<div style="text-align:center;">
<iframe src="../../demos/jspsych-cloze-demo3.html" width="90%;" height="500px;" frameBorder="0"></iframe>
</div>
<a target="_blank" rel="noopener noreferrer" href="../../demos/jspsych-cloze-demo3.html">Open demo in new tab</a>
???+ example "More elaborate example (with check against correct solution, custom error handling and modified button text)"
=== "Code"
```javascript
var cloze_trial = {
type: jsPsychCloze,
text: 'A rectangle has % 4 % corners and a triangle has % 3 %.',
check_answers: true,
button_text: 'Next',
mistake_fn: function (){ alert("Wrong answer. Please check again.") }
};
```
=== "Demo"
<div style="text-align:center;">
<iframe src="../../demos/jspsych-cloze-demo2.html" width="90%;" height="500px;" frameBorder="0"></iframe>
</div>
<a target="_blank" rel="noopener noreferrer" href="../../demos/jspsych-cloze-demo2.html">Open demo in new tab</a>