jspsych-survey-multi-choice plugin

The survey-text plugin displays a set of questions with multiple choice response fields. The subject selects a single answer.

Parameters

This table lists the parameters associated with this plugin. 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 strings. The strings are the prompts/questions that will be associated with a group of options (radio buttons). All questions will get presented on the same page (trial).
options array undefined An array of arrays. The innermost arrays contain a set of options to display for an individual question. The length of the outer array should be the same as the number of questions.
required array null An array of boolean values. Each boolean indicates if a question is required (true) or not (false), using the HTML5 required attribute. The length of this array should correspond to the length of the questions array. If this parameter is undefined, all questions will be optional. Note: The HTML5 required attribute is not currently supported by the Safari browser.
horizontal boolean false If true, then questions are centered and options are displayed horizontally.
preamble array empty string Array of HTML formatted strings to display at the top of each page above all the questions. Each element of the array corresponds to a trial/page of questions.

Data Generated

In addition to the default data collected by all plugins, this plugin collects the following data for each trial.

Name Type Value
responses JSON string A string in JSON format containing the responses 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 recorded as the name of the option label.
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.