No, it not necessary to read the entire question to parents, especially if they have a copy of the questionnaire with them. For example, item 4 in the Communication area on the 16 month questionnaire states, When you ask your child to, does he go into another room to find a familiar toy or object? (You might ask, “Where is your ball?” or say, “Bring me your coat,” or “Go get your blanket.”). You can simply ask “for item 4, how did you answer?” If the parent hasn’t completed the questionnaire or doesn’t have a copy, however, you may need to read the entire item.