The Ages & Stages Questionnaires®, Third Edition (ASQ®-3) pinpoints developmental progress in children between the ages of one month to 5 ½ years. Its success lies in its parent-centric approach and inherent ease-of-use—a combination that has made it the most widely used developmental screener across the globe.
Evidence shows that the earlier development is assessed—the greater the chance a child has to reach his or her potential. Learn more about ASQ-3.
ASQ’s parent-centric design yields unparalleled accuracy and efficiency.
Ages & Stages Questionnaires®, Third Edition (ASQ®-3) is a developmental screening tool designed for use by early educators and health care professionals. It relies on parents as experts, is easy-to-use, family-friendly and creates the snapshot needed to catch delays and celebrate milestones.
- are available in Arabic, English, French, Spanish, and Vietnamese
- take just 10–15 minutes for parents to complete and 2–3 minutes for professionals to score
- capture parents’ in-depth knowledge
- highlight a child’s strengths as well as concerns
- teach parents about child development and their own child’s skills
- highlight results that fall in a “monitoring zone,” to make it easier to keep track of children at risk
- can be completed at home, in a waiting room, during a home visit, or as part of an in-person or phone interview.
Programs across the country rely on ASQ-3 because it’s
- highly valid, reliable, and accurate
- easy to score in just minutes
- researched and tested with an unparalleled sample of diverse children
- a great way to partner with parents and make the most of their expert knowledge
- fun and engaging for kids
Everything you need to get started with developmental screening.
ASQ-3 is designed to serve busy professionals in their day-to-day lives, wherever they work. The Starter Kit is the perfect way for busy professionals to hit the ground running with ASQ-3. Paired with the Materials Kit, it includes everything your program needs to successfully screen children. To suit your program’s unique needs, you can also order individual components from the Starter Kit and give your staff affordable ongoing training with the DVDs.
ASQ-3 STARTER KITS
- 21 paper masters of the questionnaires and scoring sheets
- CD-ROM with printable PDF questionnaires
- the essential ASQ-3 User’s Guide
- FREE laminated ASQ-3 Quick Start Guide that keeps scoring and administration basics close at hand.
ASQ-3 English Starter Kit
5.00 • Stock Number: 70410 • 2009 • ISBN 978-1-59857-041-0
ASQ-3 Spanish Starter Kit
5.00 • Stock Number: 70427 • 2009 • ISBN 978-1-59857-042-7
Please note that the ASQ-3 User’s Guide included in both the English and Spanish Starter Kits is in English.
ASQ-3 User’s Guide
This guide provides step-by-step guidance on administering and scoring the questionnaires, setting up a screening system, working with families effectively, and using ASQ-3 across a range of settings.
ASQ-3 User’s Guide (in English only)
.00 • Stock Number: 70045 • 2009 • ISBN 978-1-59857-004-5
Masters of the 21 photocopiable questionnaires and scoring sheets, plus a CD-ROM with printable PDFs, in a handy box.
ASQ-3 English Questionnaires
0.00 • Stock Number: 70021 • 2009 • ISBN 978-1-59857-002-1
ASQ-3 Spanish Questionnaires
0.00 • Stock Number: 70038 • 2009 • ISBN 978-1-59857-003-8
ASQ-3 Arabic Questionnaires (CD-ROM only)
5.00 • Stock Number: 52643 • 2018 • ISBN 978-1-68125-264-3
ASQ-3 French Questionnaires (CD-ROM only)
5.00 • Stock Number: 51820 • 2016 • ISBN 978-1-68125-182-0
ASQ-3 Vietnamese Questionnaires (CD-ROM only)
5.00 • Stock Number: 52650 • 2018 • ISBN 978-1-68125-265-0
ASQ-3 Quick Start Guide
Sold in sets of 5, this lightweight laminated 4-page guide to ASQ-3 keeps implementation basics readily available.
ASQ-3 English Quick Start Guide
.00 • Stock Number: 70052 • 2009 • package of 5 • ISBN 978-1-59857-005-2
ASQ-3 Spanish Quick Start Guide
.00 • Stock Number: 71974 • 2009 • package of 5 • ISBN 978-1-59857-197-4
ASQ-3 French Quick Start Guide
.00 • Stock Number: 51837 • 2016 • package of 5 • ISBN 978-1-68125-183-7
ASQ-3 MATERIALS KIT
ASQ-3 Materials Kit with tote bag
The ASQ-3 Materials Kit—approximately 20 attractive and engaging toys, books, and other items—is designed to encourage a child’s participation and support effective, accurate administration of the questionnaires.
- Baby bottle (clear)
- Ball: large (with hand pump to inflate; ball may be stored deflated when not being used)
- Ball: small
- Beads: small, to string (10 included)
- Book: wordless picture book
- Book: storybook with pictures
- Blocks: small (15 included)
- Coloring book (with tear-out pages)
- Crayons: two sizes (one 4-pack of small; one 3-pack of chunky)
- Fork (child size)
- Jars: clear plastic with screw lid, one short and one tall (short one may be used for “jar with screw lid” or “wind-up toy”; tall one may be used for “clear bottle” if baby bottle is not used)
- Puzzle (5–7-piece, interlocking)
- Scissors (child-safe)
- Shoelace (may be used for “string”)
- Spoon (child size) (may be used for “stick”)
- Stuffed doll or animal with buttons and zipper (may be used for “doll”)
- Toy: keys on a ring (may be used for “small toy” or “rattle”)
- Toy: small, easy to grasp
- Container for organizing the kit’s small items
- Booklet on how to use the kit
- Laminated list of kit items
ASQ-3 Materials Kit
5.00 • Stock Number: 70274 • 2009 • ISBN 978-1-59857-027-4
Extra tote bag
.00 • Stock Number: 70281 • 2009 • ISBN 978-1-59857-028-1
These inexpensive training tools can be used over and over again to show staff how to screen, score, and interpret results.
ASQ-3 Scoring and Referral DVD
.95 • Stock Number: 70250 • 2009 • 16 minutes• ISBN 978-1-59857-025-0
Ages & Stages Questionnaires on a Home Visit DVD
.95 • Stock Number: 69711 • 1995 • 20 minutes • ISBN 978-1-55766-971-1
Need an order form? Print this form to order using a purchase order or via fax.
At A Glance
What is the age range covered?
What are the intervals?
21 questionnaires and scoring sheets at 2, 4, 6, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 27, 30, 33, 36, 42, 48, 54, and 60 months of age
What are the areas screened?
Communication, gross motor, fine motor, problem solving, and personal-social
What is a sample item?
Does your child stack a small block or toy on top of another one? (18 month questionnaire, Fine Motor area) See a sample questionnaire.
What are the components?
The ASQ-3 Starter Kit contains everything you need to start screening children with ASQ-3: 21 paper masters of the questionnaires and scoring sheets, a CD-ROM with printable PDF questionnaires, the ASQ-3 User’s Guide, and a FREE ASQ-3 Quick Start Guide.
Who completes ASQ-3?
Parents/caregivers complete questionnaires; professionals, paraprofessionals, or clerical staff score them.
How long does it take?
Each questionnaire takes 10–15 minutes to complete and just 1–3 minutes to score.
What is the validity and reliability?
Excellent—validity is .82 to .88, test-retest reliability is .91, and inter-rater reliability is .92
What languages are available?
Are there online options available?
Online management with ASQ® Pro for single-site programs and ASQ® Enterprise for multi-site programs, ASQ® Hub to link the two, and ASQ® Family Access for online questionnaire completion
What are the additional features of ASQ-3?
Cost-effective, reproducible, can be used alone or in conjunction with ASQ®:SE-2
View this information as a PDF.
Everything you need to know about ASQ-3 in one PowerPoint! Easy to understand and easy to share with colleagues.
Download your free PowerPoint now!
What sets ASQ-3 apart? Validity, sensitivity and specificity. To name a few.
ASQ-3’s high validity and reliability have been proven by extensive research. These results underscore the overall effectiveness of ASQ-3 to discriminate between children with developmental delays and those who appear to be developing typically.
- The validity of ASQ-3 has been evaluated extensively. The unparalleled research sample includes 15,138 children that mirror the U.S. population in terms of race, ethnicity, and socio-economic groups.
- The concurrent validity (measured by comparing the percentage of agreement between the results of the parent-completed ASQ-3 questionnaires with the results of professionally administered standardized assessments) ranged from 74% for the 42-month ASQ-3 questionnaire to 100% for the 2-month and 54-month questionnaires, with 86% overall agreement. Concurrent Validity for ASQ-3 questionnaire Intervals.
- The sensitivity of ASQ-3, or the ability of ASQ-3 to correctly identify those children with delays, ranged from 75% for the 6-month questionnaire to 100% for the 4-month, 14-month, 54-month, and 60-month questionnaires, with 86% overall agreement.
- The specificity of ASQ-3, or the ability of ASQ-3 to correctly identify typically developing children, ranged from 70% for the 14-month questionnaire to 100% for the 2-month, 16-month, and 54-month questionnaires, with 85% overall agreement.
Given the complexity of measuring child development, the American Academy of Pediatrics considers high quality developmental screening tests to have sensitivities and specificities of 70% to 80%.
Download the ASQ-3 Technical Report.
Check out our Research & Studies section for more empirical evidence.
The data tells the story
Research & Studies
How reliable? We’ll let the data tell the story.
The validity of ASQ-3 has been studied more than any other screener. Psychometric studies based on a normative sample of more than 18,000 questionnaires show high reliability, internal consistency, sensitivity, and specificity.
ASQ-3 (and its prior editions) is cited by countless articles as an accurate, cost-effective, and parent-friendly instrument for screening and monitoring of young children. A few key articles are listed below—feel free to browse a more comprehensive list of ASQ-3 studies.
- American Academy of Pediatrics Policy Statement: Identifying Infants and Young Children with Developmental Disorders in the Medical Home: An Algorithm for Developmental Surveillance and Screening, Pediatrics, (2006), 118, 405-420.
- Bocca-Tjeertes, I. (2014). Fetal growth restriction delays development in preterm infants. Pediatrics. doi:10.1542/peds.2013-1739.
- Drotar et al. (2008). Selecting Developmental Surveillance and Screening Tools. Pediatrics in Review. 29: 52–58.
- Macy, M. (2012). The evidence behind developmental screening instruments. Infants and Young Children, 25(1), 16-61.
- Valleley, R.J., & Roane, B.M. (2010). Review of Ages & Stages Questionnaires: A Parent-Completed Child Monitoring System, Third Edition. In R.A. Spies, J.F. Carlson, & K.F. Geisinger (Eds.), The eighteenth mental measurements yearbook (pp. 13–15). Lincoln, NE: Buros Institute of Mental Measurements.
The research never stops.
Studies on ASQ-3 are currently being conducted in the United States, Canada, and countries throughout the world. We look to our users to inform the future evolutions of ASQ-3—the educators, families and professionals using our tools on a daily basis. To date, thousands of families and professionals have provided valuable feedback to the tool’s developers at the Early Intervention Program at the University of Oregon.
Our developers are happy to receive blind data to help further their research and the development of future editions. If your program has collected data on ASQ-3 and would like to share it, email . Please include your data and complete contact information, which will be shared only with the authors and not used by Brookes Publishing or any other party.
ASQ-3 and Autism
Identify early signs of autism with ASQ-3.
More children than ever before are being diagnosed with an autism spectrum disorder (ASD)—currently, the CDC estimates that an average of 1 in 68 children in the United States has an ASD.1
Here’s the good news. With early diagnosis and intervention, a child’s chances for social and academic success can be greatly improved.
This is where ASQ-3 comes in. Through its parent-completed questionnaires, educators and professionals get the critical insights need to detect delays or potential delays.
In fact, exciting retrospective research shows that ASQ accurately identified children who were later found to have autism after further assessment. And with ASQ-3’s questions on behavior and expressive language, it’s easier than ever to elicit parent concerns that may indicate autism.
ASQ-3 is a fast and accurate first step in identifying children with autism—and quickly starting the intervention services to truly impact outcomes during these early, critical first years.
1Centers for Disease Control and Prevention (2015). “Facts About ASDs.” http://www.cdc.gov/ncbddd/autism/facts.html; retrieved February 2, 2015.
The pediatric experts have spoken. See how they compare leading screeners.
In an effort to connect professionals with the most effective, accurate screeners, the experts at Pediatrics in Review performed a thorough review of leading screeners. The results are published in its research: “Selecting Developmental Surveillance and Screening Tools.”
Ages & Stages Questionnaires was recommended as a parent report measure to screen both for general developmental delay and for developmental delay in at-risk (such as preterm birth or economically disadvantaged) populations.
See why ASQ is the screener of choice for thousands of programs across the country. Download the full comparison chart now
What ASQ Users are Saying
“ASQ-3 has helped make our staff and our families more aware of developmentally appropriate growth and development. The resources that come with the ASQ-3 have been instrumental for parents to provide school readiness activities at home and to understand the objectives that we cover in our plans.”Jessica Trail, Head of Faculty & Administration, The Young School
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