All right. You are from AFEAS. So you can do a test. I did it myself at some point. I do a lot of volunteering. One day, we put up a notice on a bulletin board that we wanted people to read. When we put “do not read”, no one read it, but when we removed those words, everyone was in front of the bulletin board reading it.
I would personally not answer some of the questions because I find them intrusive. There are things that should be out in the open, but some should stay private.
You're telling us that, when participation is mandatory, people can get help, but when it is voluntary, they throw out the questionnaire. I don't think I agree with you.