ASQ screening is a parent-completed questionnaire that checks whether a child’s development is on track across five key areas: communication, gross motor skills, fine motor skills, problem solving, and personal-social skills. The full name is the Ages and Stages Questionnaires, and the current edition (ASQ-3) covers children from 2 months to 60 months old. It’s one of the most widely used developmental screening tools in pediatric care, designed to catch early signs of delay so children can get support during the years when it matters most.
What the ASQ Actually Measures
Each ASQ questionnaire asks about specific skills your child should be developing at their current age. The five domains break down like this:
- Communication: Whether your child is babbling, using words, following directions, or forming sentences, depending on their age.
- Gross motor: Large body movements like rolling over, crawling, walking, jumping, or climbing stairs.
- Fine motor: Smaller, precise movements like grasping objects, stacking blocks, drawing, or using utensils.
- Problem solving: How your child explores objects, figures things out, and responds to new situations.
- Personal-social: Skills like feeding themselves, playing with others, copying behaviors, or showing independence.
For each skill, you mark whether your child does it regularly, sometimes, or not yet. The questions are written in plain language and describe real activities you can observe at home, not clinical tasks. This makes parents the primary source of information, which is intentional. You see your child in far more situations than any doctor does during a short office visit.
How It Works in Practice
Filling out an ASQ takes about 10 to 15 minutes. You’ll receive a questionnaire matched to your child’s age, and there are 21 different age intervals available: 2, 4, 6, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 27, 30, 33, 36, 42, 48, 54, and 60 months. Some pediatric offices hand you a paper form in the waiting room; others send a link to complete it online before the appointment.
Once you finish, a provider scores the questionnaire by totaling points in each of the five domains and comparing them to established cutoff scores. Each domain gets its own result, so a child might score well in communication but flag a concern in fine motor skills. Scoring is quick on the provider’s end, which is one reason the ASQ became so popular in busy pediatric practices. The results fall into one of three categories: development appears on schedule, the child is close to the cutoff and should be monitored, or a further evaluation is recommended.
A score that falls below the cutoff doesn’t mean your child has a diagnosed delay. It means something warrants a closer look, typically through a referral to early intervention services or a developmental specialist who can do more comprehensive testing.
When Your Child Gets Screened
The American Academy of Pediatrics recommends formal developmental screening at the 9-month, 18-month, and 30-month well-child visits. Separate autism-specific screening is recommended at 18 and 24 months. These are the minimum recommended time points. Your pediatrician can screen at any visit if you or they have concerns about your child’s development.
Many childcare programs and early childhood programs also use the ASQ as a routine check, sometimes screening children at regular intervals throughout the year. If you receive an ASQ through your child’s daycare or preschool, it’s the same tool your pediatrician would use.
How Accurate Is the ASQ?
The ASQ is a screening tool, not a diagnostic test, and that distinction matters. Its job is to flag children who need further evaluation, not to provide a definitive diagnosis. A large study published in JAMA Pediatrics found that for children under 42 months, the ASQ-3 correctly identified 60% of children with severe developmental delays, with a specificity of about 89%. That high specificity means it rarely flags a child who is developing normally. The tradeoff is that it can miss some children with milder delays, particularly in older age groups, where sensitivity for mild-to-severe delays dropped to around 24%.
What this means practically: if the ASQ flags a concern, it’s worth taking seriously. If it doesn’t flag anything but you still feel something is off, trust your instincts. No screening tool catches every child, and the AAP guidelines explicitly state that screening should happen anytime a parent or clinician has concerns, regardless of whether the next scheduled screening is months away.
ASQ-3 vs. ASQ:SE-2
You might see two versions of the ASQ mentioned together. The ASQ-3 is the developmental screener described above, covering motor skills, communication, problem solving, and social skills. The ASQ:SE-2 is a separate companion tool that focuses specifically on social-emotional development. It looks at things like whether your child can calm down after being upset, how they interact with caregivers, and whether they show anxiety, withdrawal, or behavioral concerns that seem unusual for their age.
The two questionnaires are designed to be used together but serve different purposes. Your provider might use just the ASQ-3, just the ASQ:SE-2, or both, depending on the visit and any specific concerns.
What Happens After Screening
If your child’s scores are all above the cutoffs, no further action is needed until the next scheduled screening. Your provider may still suggest activities to support development in areas where scores were close to the line.
If one or more domains fall below the cutoff, the next step is usually a referral for a more thorough developmental evaluation. In the United States, children under 3 are eligible for free evaluation through their state’s early intervention program, regardless of income. Children 3 and older can be evaluated through their local school district. These evaluations are more detailed than the ASQ and involve specialists who can determine whether a delay exists, how significant it is, and what therapies or services would help.
Early intervention is consistently linked to better outcomes, which is the entire rationale behind routine screening. A delay caught at 12 or 18 months gives a child years of support during a critical window of brain development. The ASQ exists to close the gap between when a delay begins and when someone notices it.
Updates Coming With ASQ-4
A fourth edition of the ASQ is currently in development, though no publication date has been announced yet. The biggest change will be a new 72-month questionnaire, extending coverage through the transition to school for the first time. The developers are also updating cutoff scores using a new normative sample that better reflects the current U.S. population, and revising some questionnaire items based on feedback from both parents and professionals. The ASQ:SE-2 will not be revised alongside ASQ-4.