Does a positive autism screen mean my toddler has autism?

No. A positive screen means that closer developmental evaluation may be helpful; it is not a diagnosis. A clinician considers the child's development, history, observations, and formal evaluation rather than diagnosing from one questionnaire.

What if an autism screen is negative but I am still concerned?

Tell your pediatrician what you are noticing and ask what follow-up is appropriate. Screening tools do not identify every child, and developmental surveillance continues over time. Concerns from families, caregivers, or teachers are worth discussing even after a negative screen.

Can I request developmental evaluation without an autism diagnosis?

Yes. In New Jersey, families of children under 3 can contact the New Jersey Early Intervention System. For children age 3 and older, parents can request an evaluation through the child's resident public school district. An autism diagnosis is not required to make either request.

Can speech delay be caused by something other than autism?

Yes. Language develops differently among children, and speech or language concerns can have many explanations, including hearing differences. Discuss the concern with your pediatrician; a hearing check and speech-language or broader developmental evaluation may be appropriate.

Early Signs of Autism in Toddlers: Screening and Next Steps

Q: When are developmental and autism screenings recommended?

The American Academy of Pediatrics recommends standardized general developmental screening at 9, 18, and 30 months and autism-specific screening at 18 and 24 months. Screening should also happen whenever a concern arises rather than waiting for a scheduled age.

Noticing differences in how a toddler communicates, plays, or responds can bring many questions. Autism is a neurodevelopmental difference, not a judgment about a child or a family's parenting. There is also no single behavior, personality trait, or online checklist that can tell a parent whether a child is autistic. The useful next step is to share concrete observations with the child's pediatrician and decide together whether screening or a fuller evaluation is appropriate.

Surveillance, screening, and evaluation are different

Developmental surveillance is the ongoing conversation at health visits about a child's skills, behavior, family observations, and developmental history. It happens over time rather than on one test date. Clinicians may ask what has changed since the last visit and observe how a child moves, communicates, and interacts.

Developmental screening uses a brief, standardized tool to identify children who may benefit from closer evaluation. The American Academy of Pediatrics recommends general developmental screening at 9, 18, and 30 months and autism-specific screening at 18 and 24 months. Screening is also appropriate whenever a parent, caregiver, teacher, or clinician has a concern; families do not need to wait for one of those ages.

A positive screen is not an autism diagnosis. It indicates that more assessment may be useful. A negative screen does not prove that there is no developmental difference, either. Screening tools can miss concerns, skills can change, and observations from people who know the child remain important. Diagnosis requires a comprehensive evaluation by appropriately trained professionals. The CDC notes that autism may sometimes be detected by 18 months and that, when performed by an experienced professional, a diagnosis can be reliable by age 2.

Observations worth sharing

Rather than treating the examples below as a parent diagnostic checklist, write down what happens, where it happens, and how often. Development varies, and any one observation can have several explanations.

Examples to discuss include a toddler who rarely uses gestures such as pointing to request something or to share interest; does not consistently turn when their name is called; seldom brings or shows objects simply to share enjoyment; or has difficulty joining back-and-forth social games. You might notice limited use of sounds, words, facial expressions, or gaze to communicate needs and interests. Some children repeat movements, sounds, or play patterns, become especially distressed by changes in familiar routines, or respond strongly or very little to sounds, textures, lights, or movement.

These observations do not establish autism. Eye contact, play, language, and sensory responses differ across children, cultures, settings, and levels of comfort. Avoid testing a child repeatedly at home or requiring eye contact. Instead, describe the child's usual communication and what helps them participate comfortably.

Speech, language, and hearing

A speech or language concern deserves attention whether or not autism is being considered. Tell the pediatrician about words or gestures the child uses, how they understand simple language, and how they communicate wants or share interests. Hearing differences, including fluctuating hearing with middle-ear fluid, can affect responses to names and spoken language. A pediatrician may recommend a formal hearing assessment, speech-language evaluation, or broader developmental evaluation. Hearing and developmental assessments answer different questions, so one does not necessarily replace the other.

What to bring to the visit

Specific information is more useful than trying to label a behavior. Before an appointment:

Note examples with dates, settings, and what happened before and afterward.
Bring prior screening results, hearing reports, developmental evaluations, and relevant medical records.
Ask daycare providers, preschool teachers, or other regular caregivers what they observe during play, transitions, meals, and group activities.
List skills the child uses consistently and skills that are emerging, not only concerns.
Write down any skill the child previously used but no longer uses and approximately when that change occurred.

Short videos of naturally occurring behavior may help if the clinician agrees and recording is safe and respectful. Do not delay an appointment while trying to collect perfect documentation.

Requesting evaluation and support in New Jersey

Families do not need to wait for an autism diagnosis to request developmental evaluation. For a child under age 3, a family can contact the New Jersey Early Intervention System at 888-653-4463. Early Intervention can evaluate development and determine eligibility for services.

For a child age 3 or older, a parent can contact the child's resident public school district in writing to request an evaluation. The district's child study team or special education office can explain the referral process, including for a child not yet enrolled in school. Pediatric medical evaluation and school evaluation serve different purposes, and families may pursue both.

If services are recommended, the plan should reflect the child's individual needs and family priorities. Supports may help communication, daily participation, learning, or family strategies, but no specific therapy can guarantee a particular outcome or a “typical” developmental trajectory. Respectful care builds on strengths, supports autonomy, and avoids framing an autistic identity as something that must be erased.

Do not wait if skills are lost

Contact the pediatrician promptly if a child loses previously acquired language, social, movement, or self-care skills. Gradual concerns still deserve timely assessment. Seek urgent medical assessment when regression is sudden or occurs with acute illness, seizure, altered awareness, new weakness, or breathing trouble. Call 911 for active seizure, serious breathing difficulty, loss of consciousness, or difficulty waking.