ASQ-3 (and ASQ:SE-2) questionnaires are primarily designed to be completed by parents. A caregiver/teacher who spends at least 20 hours a week with the child may also complete the questionnaires. It is important that the person completing the questionnaire is familiar with the child's skills. A professional unfamiliar with the child can administer the questionnaire using an interview format with the parent if literacy or language is an issue.