My experience of "representative" studies in psychology (university of Berne) was that they'd come up with something, then gather a group of "volunteer" psychol

My experience of "representative" studies in psychology (university of Berne) was that they'd come up with something, then gather a group of "volunteer" psychology students - 80% women - who need to participate at x studies as requirement to pass, publish it as representative serious research, and call it a day.