jsPsych/docs/markdown_docs/plugins/jspsych-html-slider-response.md

jspsych-html-slider-response

This plugin displays HTML content.The stimulus can be displayed until a response is given, or for a pre-determined amount of time. The trial can be ended automatically if the subject has failed to respond within a fixed length of time.

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
stimulus	HTML string	undefined	The string to be displayed
labels	array of keycodes/strings	Labels of the slider
button_label	String	undefined	Label of the button to advance/submit
min	integer	0	Sets the minimum value of the slider
max	integer	100	Sets the maximum value of the slider
step	integer	1	Sets the step of the slider
prompt	String	''	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).
stimulus_duration	integer	-1	How long to show the stimulus for in milliseconds. If the value is -1, then the stimulus will be shown until the subject makes a response.
trial duration	numeric	-1	How long to wait for the subject to make a response before ending the trial in milliseconds. If the subject fails to make a response before this timer is reached, the the subject's response will be recorded as -1 for the trial and the trial will end. If the value of this parameter is -1, then the trial will wait for a response indefinitely.
response_ends_trial	boolean	true	If true, then the trial will end whenever the subject makes a response (assuming they make their response before the cutoff specified by the timing_response parameter). If false, then the trial will continue until the value for trial_duration is reached. You can use this parameter to force the subject to view a stimulus for a fixed amount of time, even if they respond before the time is complete.

Data Generated

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

Name	Type	Value
response	numeric	The numeric value of the slider.
rt	numeric	The 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.

Examples

Displaying trial until subject gives a response

var trial = {
	type: 'html-slider-response',
	stimulus: '<p>Running</p>',
	labels: ['healthy', 'unhealthy'],
  button_label: 'Submit',
	prompt: "<p>How healthy/unhealthy is this activity?</p>",
  response_ends_trial: false
};