While the questionnaires were developed so that parents could complete them independently, it is acceptable for a professional to provide assistance. In situations where literacy is an issue, a professional can read the questions to the parent. A professional can also provide explanation to assist with understanding of an item. In situations where language is an issue, an interpreter may be needed. 

Professionals should be careful to provide assistance in reading or understanding items but not to influence parental answers. In addition to a parent, a teacher or caregiver may also complete the questionnaire for a child if he or she spends at least 15-20 hours a week with the child.