JATOS how to assign or collect participant number
I have an experiment set up on JATOS ready to go but I was wondering if participant can input their own participant number or if the experiment assigns a unique participant number, if the participant can tell me the number later on?
I have a separate survey that the participant filled out and I need to be able to link the person to the survey and the experiment. Participant can stay anonymous, I just need to be able to match the experiment to their survey.
Thank you in advance!