mirror of
https://github.com/jspsych/jsPsych.git
synced 2025-05-10 11:10:54 +00:00
38 lines
2.4 KiB
Markdown
38 lines
2.4 KiB
Markdown
# jspsych-survey-likert plugin
|
|
|
|
The survey-likert plugin displays a set of questions with Likert scale responses. The subject responds by selecting a radio button.
|
|
|
|
## 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
|
|
----------|------|---------------|------------
|
|
questions | array | *undefined* | An array of objects, each object represents a question that appears on the screen. Each object contains a prompt, labels and required parameter that will be applied to the question. See examples below for further clarification.`prompt`: Type string, default value is *undefined*. The strings are the question that will be associated with a slider. `labels`: Type array, default value is *undefined*. Each array element is an array of strings. The innermost arrays contain a set of labels to display for an individual question. If you want to use blank responses and only label the end points or some subset of the options, just insert a blank string for the unlabeled responses.`required`: Type boolean, default value is false. Makes answering questions required.
|
|
preamble | string | empty string | HTML formatted string to display at the top of the page above all the questions.
|
|
button_label | string | 'Continue' | Label of the button.
|
|
|
|
## Data Generated
|
|
|
|
In addition to the [default data collected by all plugins](overview#datacollectedbyplugins), this plugin collects the following data for each trial.
|
|
|
|
Name | Type | Value
|
|
-----|------|------
|
|
responses | JSON string | A string in JSON format containing the response for each question. The encoded object will have a separate variable for the response to each question, with the first question in the trial being recorded in `Q0`, the second in `Q1`, and so on. The responses are recorded as integers, representing the position of the slider on the scale.
|
|
rt | numeric | The response time in milliseconds for the subject to make a response. The time is measured from when the questions first appear on the screen until the subject's response.
|
|
|
|
## Examples
|
|
|
|
#### Basic example with multiple questions on a page.
|
|
|
|
```javascript
|
|
|
|
// defining two different response scales that can be used.
|
|
var scale_1 = ["Strongly Disagree", "Disagree", "Neutral", "Agree", "Strongly Agree"];
|
|
|
|
var likert_page = {
|
|
type: 'survey-likert',
|
|
questions: [{prompt: "I like vegetables.", labels: scale_1],
|
|
};
|
|
```
|