The following questionnaires endorsed by the American Academy of Pediatrics (AAP) can help a health professional determine whether a child has any developmental delays:

• Ages and Stages Questionnaire
• BRIGANCE Screens
• Child Development Inventories (such as the Denver II and the Minnesota Child Development Inventory)
• Parents' Evaluations of Development Status
• Modified Checklist for Autism in Toddlers (M-CHAT)

Although these questionnaires are important, they may not consistently identify problems, such as autism, in older children, adolescents, and young adults or in a child any age with a mild condition. However, when used routinely, they can help identify subtle developmental delays that may otherwise be missed.