I wish to ask parents no more than 30 questions about the mental health of their adult children. One example of such a survey - but a long one - is ABCL 18/59. I am looking for something shorter like the General Health Questionnaire - but for parents. Of course, it does not have to be specifically for parents it can be for caregivers or any adult reporting on other adults. Although a tool for physicians will not do, as it has to be in a layman's language.