When I was 12, when grade 6 had just let out, me and my mom participated in this study-- I think it was for mothers and daughters-- where the kids were aged 8 to 12. We were given questionnares to fill out, we were each questioned individually, me and my mom were then put in a room where we were supposed to talk, and we were compensated $90 I think for it, and used it to finance my sleepover with my two best friends... It was a study to see if we were depressed; a survey thing to see what percentage were depressed. They called back much later to tell my mother that we weren't depressed, and she wasn't in a deep dark depression, though she actually admitted to letting herself go due to depression and that.