Running jsPsych experiments from Pavlovia
Running jsPsych experiments from Pavlovia
Integrating jsPsych with Prolific
Recruiting with Prolific
- Important! Make sure Prolific IDs are saved by including this code anywhere in your index.html file:
// capture info from Prolific
var subject_id = jsPsych.data.getURLVariable('PROLIFIC_PID');
var study_id = jsPsych.data.getURLVariable('STUDY_ID');
var session_id = jsPsych.data.getURLVariable('SESSION_ID');
jsPsych.data.addProperties({
subject_id: subject_id,
study_id: study_id,
session_id: session_id,
});
When creating your study on Prolific, insert the URL generated by Pavlovia and select "I'll use URL parameters" when asked how you'd like to record Prolific IDs:
- Important! Make sure all data is saved on Pavlovia's server before participants are redirected to Prolific by including this code within the
pavlovia_finishvariable in your index.html file:
// finish connection with pavlovia.org and make sure data is saved before server redirects participants to prolific
var pavlovia_finish = {
type: "pavlovia",
command: "finish",
dataFilter: function(data){
console.log(jsPsych.data.get().csv()); // alternatively, .json can be used here instead of .csv
return data;
},
completedCallback: function(){
alert(`Data successfully submitted. Thank you for participating!`);
}
};
timeline.push(pavlovia_finish);
The Pavlovia plugin-in (version - "pavlovia-2020.4") can be downloaded HERE. This version contains the completedCallback function seen in the code above. By using this plug-in and calling this function within the pavlovia_finish variable, participants must wait a few seconds after finishing the task for the data to be confirmed on Pavlovia's servers. Then, participants receive a notification stating, “Data successfully submitted. Thank you for participating!” Participants press ‘OK’ and are directed to a screen with the Prolific completion URL (see below for instructions regarding Prolific redirect).
- Important! To redirect Participants to Prolific upon completion include this code in your index.html file after the connection to Pavlovia is finished (i.e., following the pavlovia_finish variable):
// redirect participants to Prolific
var prolific_redirect = {
type: "html-keyboard-response",
stimulus: `<p>You've finished the task. Thanks for participating!</p>
<p><a href="https://app.prolific.co/submissions/complete?cc=XXXXXX">Click here to return to Prolific and complete the study</a>.</p>`,
choices: "NO_KEYS"
};
timeline.push(prolific_redirect);
Copy and paste the Prolific completion URL for your study by selecting "I'll redirect them using a URL" when creating the study on Prolific:
