Understanding Developmental Assessment
What to expect when your child is referred for developmental evaluation
What Happened
Your child has been referred for a developmental assessment, and this can feel worrying. It is important to understand that a referral is not a diagnosis - it is simply a closer look to understand how your child is developing and whether they could benefit from support. Developmental assessments are used when there is a question about whether a child is meeting expected milestones in areas like communication, motor skills, social interaction, cognition, or self-help skills. Referrals can come from a pediatrician, a teacher, a childcare provider, or even from your own concerns as a parent. The evaluation process is thorough and collaborative: a team of specialists observes your child, asks you detailed questions, and uses standardized tools to understand your child's strengths and areas where they may need help. The goal is not to label your child, but to create a clear picture of where they are right now and to connect your family with services and therapies that can make a meaningful difference - the earlier, the better.
Key Facts
- A referral for developmental evaluation is not a diagnosis. It is a tool to gather more information about your child's development and determine whether support would be beneficial.
- Approximately 1 in 6 children (about 17%) in the United States has a developmental disability. Many more have developmental concerns that benefit from early support even without a formal diagnosis.
- Early intervention works. Research consistently shows that children who receive developmental support early - before age 3 when possible - have significantly better outcomes in language, cognition, and adaptive behavior than those who start later.
- Developmental assessments evaluate multiple domains: gross motor (walking, jumping), fine motor (grasping, drawing), speech and language (understanding and using words), cognitive (problem-solving, learning), social-emotional (interaction, regulation), and adaptive (self-care skills).
- The evaluation team may include a developmental pediatrician, psychologist, speech-language pathologist, occupational therapist, physical therapist, and/or social worker, depending on the concerns.
- Under the Individuals with Disabilities Education Act (IDEA), children from birth to age 3 are entitled to a free evaluation through the Early Intervention program, and children ages 3 and older can be evaluated through their local school district - at no cost to families.
- Parents are essential members of the evaluation team. Your observations about your child's behavior at home, their history, and your concerns are critical data that no test can replace.
What to Expect
- The evaluation typically takes 1-3 hours, sometimes split across multiple sessions. Your child will be observed during play, asked to complete age-appropriate tasks, and assessed using standardized developmental tools. You will be asked detailed questions about your child's history, behavior, and daily routines.
- After the evaluation, the team will share their findings with you, explain what the results mean, and outline recommendations. This may include a specific diagnosis, a description of developmental concerns without a formal diagnosis, or reassurance that your child is developing within the expected range.
- If your child qualifies for services, you will work with the team to create an Individualized Family Service Plan (IFSP for children under 3) or an Individualized Education Program (IEP for children 3 and older). These plans outline specific goals and the therapies or supports your child will receive.
- Common therapies include speech-language therapy, occupational therapy, physical therapy, developmental therapy, and behavioral support. Services for children under 3 are often delivered in your home or childcare setting.
- The evaluation process can feel emotional. It is normal to feel anxious, defensive, relieved, or all of these at once. Many parents report that getting answers - even difficult ones - is better than the uncertainty of not knowing.
When to Worry
- If your child is not babbling by 12 months, not using any single words by 16 months, not using 2-word phrases by 24 months, or has lost any language skills at any age, request a developmental evaluation promptly.
- If your child is not walking independently by 18 months or shows significant asymmetry in movement (using one side of the body much more than the other), discuss this with your pediatrician and request a motor evaluation.
- If your child does not respond to their name consistently by 12 months, avoids eye contact, does not point or wave by 12 months, or shows limited interest in other children by 24 months, these are signs that warrant a developmental and/or autism-specific evaluation.
- If your child's preschool or daycare raises concerns about behavior, learning, or social interaction, take these observations seriously. Teachers see your child in a peer context that reveals patterns you may not see at home.
- If you have been told to "wait and see" but your gut tells you something is off, trust your instincts. You have the right to request an evaluation at any time, and there is no harm in evaluating early - only harm in waiting too long.
- If your child has already been evaluated and is receiving services, but you feel progress has stalled or new concerns have emerged, request a re-evaluation. Children's needs change over time, and their support plan should evolve accordingly.
Your Action Plan
- Contact your state's Early Intervention program (for children under 3) or your local school district's special education department (for children 3 and older) to request a free developmental evaluation. You do not need a doctor's referral for this - any parent can request an evaluation directly.
- Prepare for the evaluation by writing down your concerns, your child's developmental history (when they first smiled, sat, crawled, walked, said words), any family history of developmental conditions, and questions you want answered.
- Bring a list of your child's current medications, any previous evaluations or therapy reports, and videos of behaviors that concern you (these are invaluable when the behavior may not occur during the evaluation visit).
- During the evaluation, answer honestly and completely. Do not downplay your concerns or your child's difficulties. The evaluation is most useful when the team has the full picture.
- After receiving results, ask the team to explain anything you do not understand. Key questions include: "What are my child's strengths?", "What areas need support?", "What specific services do you recommend and why?", and "What can I do at home to help?"
- If your child qualifies for services, start them as soon as possible. Research is clear that earlier intervention leads to better outcomes. Do not wait to see if your child "grows out of it."
- Keep organized records of all evaluations, therapy reports, and communication with providers. A binder or digital folder will serve you well as you navigate the system and advocate for your child over time.
- Remember that you are your child's best advocate. Learn about your rights under IDEA, connect with your local Parent Training and Information Center (PTI), and do not hesitate to ask questions or push for the services your child needs.
Sources
Lipkin PH, Macias MM; Council on Children with Disabilities, Section on Developmental and Behavioral Pediatrics. Promoting optimal development: Identifying infants and young children with developmental disorders through developmental surveillance and screening. Pediatrics. 2020;145(1):e20193449.
Learn the Signs. Act Early. Developmental Monitoring and Screening.
Individuals with Disabilities Education Act (IDEA): Early Intervention Program for Infants and Toddlers with Disabilities.