If you want to just send summary data (e.g. mean RT) to Qualtrics then you can do that via a URL variable by using psychoJS.setRedirectUrls(myCompletedURL, myCancelledURL) to add the variable and value.
If you want to just send summary data (e.g. mean RT) to Qualtrics then you can do that via a URL variable by using psychoJS.setRedirectUrls(myCompletedURL, myCancelledURL) to add the variable and value.