Saving data to Pavlovia for experiments without JsPsych or PsychoJS

[daisy_lin]

URL of experiment:

Pavlovia

Description of the problem:
My experiment is written without JsPsych or PsychoJS, but Pavlovia only has instructions of data saving for experiments using those libraries. How can I save data (csv/json files) on Pavlovia for experiments written in vanilla JS? I don’t really want to modify the experiment code significantly to incorporate JsPsych or PsychoJS. Currently I can generate json files and save them locally when I pilot the experiment, but not sure how to save it on Pavlovia. Any suggestion would be helpful, thanks!

[wakecarter]

This isn’t my area of expertise, but here is a recent thread where similar questions are being asked.

Javascript experiment

Hi there, I have two experiments that run on JATOS - they just use javascript, jQuery and some other javascript libraries, but not jsPsych or labJS. With a new ethics, we’re now meant to use Pavlovia instead. Is it possible to integrate this kind of experiment with Pavlovia? In the documentation, I’ve only seen info for jsPsych and labJS. I’d be very grateful for any pointers where I can find more information. Jacquie

[daisy_lin]

Thanks for the reply!
I followed the suggestion from From JATOS to Pavlovia with jsPsych? · Discussion #2458 · jspsych/jsPsych · GitHub
I use jsPsych call-function to save the data in the index.html as suggested:

var resultsTrial = {
  type: 'call-function',
  func: function() { return data; }
};

jsPsych.init({
  timeline: [resultsTrial, (pavlovia plugins go here) ]
})

However, I have another issue: the experiment just ends and an empty data file is saved. Is it because jsPsych starts before everything? The strange thing is if I use console.log in the main js file, things can be printed but the experiment just ends (elements are displayed normally though).
Below is a screenshot of what I see when I pilot the experiment - Pavlovia’s experiment ending message is displayed before the experiment starts (i can still click through the experiment though…):

Here is what I have in the html script section:

     $(document).ready(function(){
	enter_credentials(start_game)
	user_credentials = participantCode;
	initialize_task(2); //change trial number here
	start_experiment();
        initializeJspsych()

});
        initializeJspsych = function(){
	var timeline = [];
	var resultsTrial = {
  		type: 'call-function',
  		func: function() { return data_log; }
		};
		console.log(resultsTrial)
	timeline.push(resultsTrial)
	/* init connection with pavlovia.org */
	var pavlovia_init = {
		type: "pavlovia",
		command: "init"
	};
	timeline.push(pavlovia_init);

	/* finish connection with pavlovia.org */
	var pavlovia_finish = {
		type: "pavlovia",
		command: "finish"
		};
	timeline.push(pavlovia_finish);
	console.log("#jspsych init");
	return jsPsych.init({
		display_element: 'jspsych-target',
  		timeline: timeline
		})

 }

Is there anything wrong with what I’m doing? Any suggestion would be helpful. Thanks in advance!

[ha1648]

Hello Daisy, I’m facing a similar issue of the experiment ending and an empty data file is saved. Did you manage to pinpoint the issue? Any guidance on the matter would be greatly appreciated.