About ASQ

The Ages & Stages Questionnaires® (ASQ®) are used to screen young children ages 1 month to 6 years to help determine if their development is on schedule—or if further evaluation may be needed. ASQ also helps parents, together with providers, learn more about a child's strengths and areas that may need support.

On this website, we are currently gathering data on a new ASQ®-4 Research Version to improve early intervention efforts and make sure ASQ remains accurate in identifying children who may need further supports. As a research version, ASQ-4 results are preliminary. We are updating and improving our findings as we gather data and are available if you have concerns about your child’s results.

ASQ is easy to fill out and can be completed by parents and caregivers who know a child well. Caregivers who wish to complete a questionnaire should have parent consent and review results together with the parent.

The current edition of ASQ is widely used by child care providers, health care providers, and pre-kindergarten programs across the U.S. to check early development in young children. First published by Brookes Publishing Co. in 1995, ASQ is now the most widely used screening tool in the world.

Thank you for your participation in this research which will guide the next edition of ASQ. For detailed information about ASQ, screening, and the complete ASQ family of products, please visit www.agesandstages.com.