Last reviewed October 2026. This article is general education and is not a diagnosis.

A toddler who is slow to talk can leave parents wondering whether this is a late start or something more. In the speech delay vs autism question, the clearest early difference is usually what happens around the words. 

Children with a speech delay alone typically still reach for connection. They point, show you things, copy what you do, and find other ways to be understood. Children with autism often show differences in social communication, play, and routines that go beyond how many words they say.

The two can also exist together, and only a qualified evaluation can sort out which explanation fits your child. What you can do today is notice patterns, write them down, and ask for screening early. Waiting and watching can mean months without support your child may qualify for.

At Achieve ABA Therapy Group, we work with Colorado families who are somewhere inside this uncertainty. The questions are usually the same: Is this normal? Should we wait? Who do we call first?

What Speech Delay and Autism Mean in Early Childhood

Parents hear these terms used loosely, so clean definitions help. Speech, language, and social communication are related but separate skills, and mixing them up is one of the main reasons the picture feels so confusing.

What a speech or language delay looks like

Speech is the physical act of talking. Language is the shared system of meaning behind it, and it can be expressed through words, signs, writing, or gestures. The National Institute on Deafness and Other Communication Disorders explains that a child may have trouble producing sounds (a speech disorder) or trouble understanding or expressing ideas (a language disorder).

Some children with developmental language disorder do not begin to talk until their third or fourth year. Hearing also plays a role, which is why a hearing test is often part of a speech-language evaluation. A child who cannot hear clearly cannot easily learn to say what they cannot hear.

What autism looks like in young children

Autism is a developmental condition that involves differences in social communication and interaction, along with restricted or repetitive behaviors or interests. The CDC’s list of signs and symptoms includes limited gestures, not pointing to share interest, and strong reactions to small changes. Delayed language shows up on the CDC’s list of related characteristics, so late talking can be part of the picture without being the whole picture.

Autism is common. CDC surveillance data estimate that about 1 in 31 eight-year-olds were identified with autism in 2022. For parents, the useful takeaway is that a good evaluation looks well beyond vocabulary.

Speech Delay vs Autism: Seven Differences Parents Can Notice

No single sign settles the question, and children vary widely. Patterns across several areas tell you more than a word count does. The table summarizes what clinicians commonly look at, and the sections after it explain what each row can look like at home.

What you may notice	Often seen with speech delay alone	Raises the question of autism
Gestures and pointing	Uses gestures and points to make up for missing words	Few or no gestures; rarely points to show you something interesting
Shared attention	Looks from the object to your face, wants you to see it too	Rarely checks in with you or shares interests
Response to name	Usually turns when called, if hearing is typical	Often does not respond to name, even with typical hearing
Imitation and play	Copies actions, enjoys back-and-forth games like peekaboo	Prefers solo play, repeats the same play routine, fixates on parts like wheels
Social interest	Seeks comfort, smiles, wants interaction	Limited interest in other children or in what others are doing
Routines and senses	Manages everyday changes for their age	Strong distress at small changes, lining up objects, unusual reactions to sounds or textures
Language pattern	Words build gradually; understanding is often ahead of speaking	Scripted or repeated phrases, or loss of words or skills once present

These columns overlap in real life. The CDC notes that some people without autism show a few of these behaviors, and children with autism may not show all of them. Treat the table as a map for your questions, not a verdict.

Gestures, pointing, and shared attention

When we meet a toddler who is not yet talking, one of the first things we watch is what happens when they want something out of reach. Many children with a speech delay take a parent’s hand, point, and glance back at the parent’s face to make sure the message landed. That glance matters because it shows the child is communicating with a person, not just solving a problem.

A child with autism may reach the goal alone, or cry and move away without directing the request to anyone. The CDC lists few or no gestures by 12 months, not sharing interests by 15 months, and not pointing to show something interesting by 18 months among the early signs worth raising with your doctor.

Imitation, play, and social interest

Play shows how a child thinks and connects. Toddlers with a speech delay often still enjoy peekaboo, copy your actions, and bring toys to you as a way of inviting play. Their interest in people is there even when the words are not.

For children with autism, play may follow the same routine every time, focus on one part of a toy, or happen mostly alone. Notice, too, whether your child seems interested in other children, even from a distance. None of this means a child cannot connect. It means they may need help learning how.

Routines, sensory responses, and repeated language

Strong attachment to routines, distress over small changes, and unusual reactions to sounds, textures, or lights are part of the restricted and repetitive behavior side of autism. Repeating words or phrases, called echolalia, is on the CDC’s list as well. Echolalia also appears in some young children without autism, so it works best as one clue among several.

Some children learn language in whole chunks, such as lines from a favorite show, before breaking them into single words. We explain how this pattern works and how to support it in our post on gestalt language processing.

Losing words, babbling, or social skills a child once had is a different kind of signal. If you notice a loss of skills, call your pediatrician promptly, whatever the cause turns out to be.

When to Seek Screening or an Evaluation

Many parents wait for a milestone to pass, or for a daycare teacher to raise a concern. Screening is built into routine pediatric care, and you can ask for it sooner whenever something feels off. You do not need permission from anyone to start the conversation.

The screening schedule pediatricians follow

The American Academy of Pediatrics recommends general developmental screening with standardized tools at 9, 18, and 30 months, and autism-specific screening at 18 and 24 months, or whenever a parent or provider has a concern. This schedule is described on the CDC’s milestones page, which is a useful place to check your child’s age against typical skills.

The AAP also notes that autism can be diagnosed as early as 18 months, and that families do not need to wait for a diagnosis to begin services such as speech-language therapy. If your child’s development is a worry now, ask about screening at this visit, not the next one.

Signs that call for a prompt conversation with your doctor

Any one of these does not confirm autism, but each deserves a call:

• Loss of words, babbling, or social skills your child once had
• Few or no gestures by 12 months, or no pointing to share interest by 18 months
• Little or no response to their name or to voices
• Understanding that seems to lag, not only speaking
• Strong distress at small changes alongside very limited play
• Any worry about hearing

Where to Start in Colorado

Colorado’s system divides by age, which surprises many parents. Knowing which door to knock on first can save weeks.

Birth to age 3: Early Intervention Colorado

For children under 3, Early Intervention Colorado handles referrals, and anyone can make one, including you. The state’s referral line is 833-733-3734. Referred children are entitled to a free multidisciplinary evaluation, and the most common services include speech therapy, occupational therapy, and physical therapy.

Because referrals are routed to a local program based on where you live, the team that evaluates a toddler in Fort Collins is not the same one that serves a family in Pueblo. A diagnosis is not required to ask for an evaluation.

Ages 3 to 5: Child Find through your school district

At age 3, responsibility shifts to your local school district or Board of Cooperative Educational Services (BOCES) through Colorado’s Child Find process. Child Find is free, referrals can come from any source, and parents stay involved throughout the evaluation.

Keep in mind that Child Find focuses on educational needs. An eligibility decision for preschool special education and a clinical autism diagnosis answer different questions, and many families end up needing both.

A clinical autism evaluation

A pediatrician can refer you to a developmental specialist, and you can also look into a diagnostic evaluation through our partner, As You Are. Most families are seen within one to two weeks, though timing can vary. A written diagnostic report is also what many insurance plans ask for before approving ABA, and our insurance page explains how that process generally works.

What an Evaluation Involves

Evaluations feel less intimidating when you know what to expect. For most toddlers, they include a conversation with you, direct observation of your child at play, and standardized tools.

The speech-language assessment

A speech-language pathologist talks with you about your child’s communication and general development, then uses structured activities to see how your child understands and uses language. A hearing test is often included. Depending on what the evaluation finds, the pathologist may suggest home activities, individual or group therapy, or further evaluation by an audiologist or developmental psychologist.

The autism evaluation

An autism evaluation usually combines a developmental history, observation, and standardized tools. A screener such as the M-CHAT flags children who may be at higher likelihood of autism, and it does not diagnose. A diagnostic evaluation goes further, with a clinician observing social communication, play, and behavior directly.

How to prepare

A little preparation makes the appointment more useful:

• Record a few short videos of your child at home, such as requesting something, playing, and being called by name
• Write down the words, signs, and gestures your child uses, even if they are not clear
• Note any skills your child has lost
• Bring hearing test results, daycare or preschool observations, and relevant family history

How ABA Fits Into Speech Delay and Autism Support

Applied behavior analysis, or ABA, is the science of how learning and behavior work. For young children with autism, it often targets communication, play, imitation, and daily living skills. It does not replace speech-language therapy, and the strongest plans have behavior analysts and speech-language pathologists sharing goals. ABA is generally considered when a child has an autism diagnosis, and eligibility and coverage vary by plan.

Communication comes first

Before we teach anything else, we want a child to have a reliable way to say “I want that” or “help.” Behavior analysts call requesting a mand, and it is often the first communication skill we build. A child can request with spoken words, signs, pictures, or a speech-generating device. We reinforce every attempt so communication feels worth the effort.

Current research does not show that augmentative and alternative communication prevents speech, and for some children it supports it. The aim is for your child to be understood now while spoken language keeps developing.

What early sessions look like

Early sessions often look like play, because they are. We start with pairing in ABA, which means becoming someone your child enjoys being around before any demands are placed. Our early intervention ABA programs for children under six build on that trust, and our post on ABA for preschoolers describes how goals change from age 2 to age 5.

Many children make progress with early, consistent support. Outcomes vary from child to child, and no responsible provider can promise a specific result.

Your role between sessions

You spend more time with your child than any therapist can. Through parent training, we show you how to turn snack time, bath time, and bedtime into practice for communication. Our post on what to do between ABA sessions offers more ideas.

Support where your child spends their day

Skills grow when they are practiced in the places they will be used. Across our ABA services, we can support your family in several settings:

• In-home ABA, where routines like breakfast and bedtime become learning moments
• Daycare-based ABA, working alongside staff during play, snack, and circle time
• School-based ABA, including back-to-school ABA support for transitions into a new classroom
• Weekend ABA, for families whose schedules need Saturday or Sunday options

As children grow, we also provide group home ABA for individuals living in group home settings. Service availability can vary by location, so please contact us to confirm what is offered near you.

Autism and Speech Delay Support Across Colorado

Our team supports families across the Front Range, Northern Colorado, and Southern Colorado. The full list of communities is on our locations page, and availability can differ by area.

Denver metro and Boulder County

Families in Denver, Aurora, and Lakewood are often a phone call away from Early Intervention Colorado and a pediatrician referral, and we can work alongside the speech-language pathologists already on your child’s team.

If you live in Arvada, Westminster, Thornton, or Broomfield, the same steps apply, and we can talk through how in-home sessions might fit your week.

To the south and west, families in Centennial and Englewood can reach us as well. In Boulder County, we serve Boulder and Longmont.

Northern Colorado

In Fort Collins, Loveland, and Greeley, early intervention is organized through local county programs, so your first call depends on where you live. We are glad to help you sort out the next step, whether that is a referral, a diagnostic evaluation, or a conversation about ABA.

South metro and Southern Colorado

Families in Parker and Castle Rock in Douglas County can reach us, as can families in Colorado Springs and Pueblo. If you live outside these cities, reach out anyway, because our team also serves many other communities and counties across the state.

Next Steps When You’re Weighing Speech Delay vs Autism

If the speech delay vs autism question is on your mind tonight, start with one small, doable step. Write down three ways your child communicates besides words, such as pointing, pulling you to something, or handing you an object. Then bring that note to your pediatrician and ask about screening.

Whatever the evaluation finds, your child does not need to be on a different timeline to deserve support. A speech delay, autism, or both can all be met with a plan built around your child’s strengths. For many families, the hardest part is the first phone call.

When you are ready, contact our team or complete our intake form. We can talk through what you are seeing, explain how evaluations and how it works with our team, and answer questions about insurance. If your child has already been diagnosed, our first 90 days roadmap can help you plan what comes next.

Frequently Asked Questions About Speech Delay and Autism

Can a child have a speech delay without being autistic?

Yes. Speech and language delays have many causes, including hearing differences, developmental language disorder, and speech-sound disorders such as apraxia. A speech-language evaluation and a hearing test are the usual starting points.

How early can autism be diagnosed?

The American Academy of Pediatrics notes that autism can be diagnosed as early as 18 months, and it recommends autism-specific screening at 18 and 24 months. Some children are diagnosed later, so it is reasonable to raise concerns at any age.

Will my child outgrow a speech delay?

Some late talkers catch up on their own, but there is no reliable way to predict which children will from the outside. An evaluation can rule out hearing concerns and identify language or developmental differences. Starting support early does not take anything away from a child who would have caught up anyway.

Do I need a diagnosis before starting therapy?

For speech-language therapy and early intervention evaluations, no. The AAP says families do not need to wait for a diagnosis to begin. ABA through insurance generally requires an autism diagnosis, so check your plan details or reach out to us with questions.

Can ABA help a child with a speech delay?

When a child has an autism diagnosis, ABA can build functional communication, imitation, and play skills, and it works best alongside speech-language therapy. A child with a speech delay and no autism would typically begin with a speech-language pathologist.

Who should I call first in Colorado?

Start with your child’s pediatrician. For a child under 3, you can also refer directly to Early Intervention Colorado at 833-733-3734. For ages 3 to 5, contact your local school district’s Child Find office. You can also call us at 720-463-9000 to talk through your options.

Sources

• Centers for Disease Control and Prevention. (2026). CDC’s developmental milestones. https://www.cdc.gov/act-early/milestones/index.html
• National Institute on Deafness and Other Communication Disorders. (2022). Speech and language developmental milestones. https://www.nidcd.nih.gov/health/speech-and-language
• National Institute of Mental Health. (2024). Autism spectrum disorder. https://www.nimh.nih.gov/health/topics/autism-spectrum-disorders-asd
• Colorado Department of Education. (n.d.). Child Find for children ages 3 through 5 years old. https://ed.cde.state.co.us/cdesped/childfindpreschoolsped/child-find-for-children-ages-3-through-5-years-old
• Colorado Department of Early Childhood. (n.d.). Early Intervention Colorado. https://www.eicolorado.org/
• Hyman, S. L., Levy, S. E., Myers, S. M., & Council on Children with Disabilities, Section on Developmental and Behavioral Pediatrics. (2020). Identification, evaluation, and management of children with autism spectrum disorder. Pediatrics, 145(1), e20193447. https://doi.org/10.1542/peds.2019-3447