jsPsych/docs/plugins/jspsych-survey-text.md

jspsych-survey-text plugin

The survey-text plugin displays a set of questions with free response text fields. The subject types in answers.

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, value, rows, and columns parameter that will be applied to the question. See examples below for further clarification.prompt: Type string, default value of undefined. The string is the prompt for the subject to respond to. Each question gets its own response field.value: Type array, default value of [""]. The string will be used to populate the response field with editable answers.rows: Type array, default value of 1. The number of rows for the response text box. columns: Type array, default value of 40. The number of columns for the response text box.
preamble	string	empty string	HTML formatted string to display at the top of the page above all the questions.
button_label	string	'Continue'	The text that appears on the button to finish the trial.

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 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. Each response is a string containing whatever the subject typed into the associated text box.
rt	numeric	The response time in milliseconds for the subject to make a response.

Examples

Basic example

// defining groups of questions that will go together.
var survey_trial = {
  type: 'survey-text',
  questions: [{prompt: "How old are you?"}, {prompt: "Where were you born?"}],
};

Custom number of rows and columns

var survey_trial = {
  type: 'survey-text',
  questions: [{prompt: "How old are you?", rows: 5, columns: 40}, {prompt: "Where were you born?", rows: 3, columns: 50}],
};