When a toddler is not talking, the first question many parents type is whether it is a speech delay or autism. It is a fair question, and the honest answer is that a parent cannot always tell from home. A child can have a speech delay without autism, autism without a speech delay, or both. What you can do is notice the right things, so the professionals you see can answer the question faster. This guide compares the two side by side and explains which evaluation answers which question in Florida.
What is the difference between speech, language and social communication?
The National Institute on Deafness and Other Communication Disorders (NIDCD) draws a clear line between two ideas:
- Speech is talking: the movements of the tongue, lips, jaw and voice that make sounds and words. A speech disorder affects producing sounds correctly or fluently.
- Language is the set of shared rules for expressing and understanding ideas. It can be spoken, signed, written or gestured. A language disorder affects understanding or using words and sentences.
Autism is about a third area: social communication, meaning how a child uses eye contact, gestures, facial expressions, sounds and words to connect with other people and share attention. Florida's school autism rule, for example, requires a language evaluation that looks at the "pragmatic (both verbal and nonverbal) and social interaction components of social communication." A child can have plenty of words and still have social communication differences, or very few words and strong social communication.
How do the signs compare?
The table below summarizes common patterns. It is a guide for observation, not a diagnostic tool. Many children do not fit neatly into one column.
| What you notice | More typical of a speech or language delay alone | More typical of autism (CDC sign list) |
|---|---|---|
| Responding to their name | Usually turns when called | May not respond to their name by about 9 months |
| Gestures | Often uses lots of gestures to make up for few words: pointing, waving, pulling you to show you | Uses few or no gestures by about 12 months; may not point to show you something interesting by 18 months |
| Sharing interest | Brings toys to show you, looks back at you to share excitement | May not share interests with others by about 15 months |
| Eye contact and expressions | Usually typical for age | May avoid or not keep eye contact; may show fewer facial expressions |
| How words are used | Fewer words than expected, but used to ask, comment and connect | May repeat words or phrases (echolalia) without using them to communicate; words may come and go |
| Play | Pretend play and back-and-forth games often on track | May line up toys, play the same way every time, or focus on parts like wheels |
| Change and routines | Typical toddler frustration | Gets upset by minor changes; must follow certain routines |
| Senses | Usually typical | Unusual reactions to how things sound, smell, taste, look or feel |
| Noticing others | Notices when someone is upset by about 24 months | May not notice when others are hurt or upset by 24 months, or join other children in play by 3 years |
Two warnings about using this table. First, frustration, tantrums and some repetitive play are common in all toddlers, especially those who cannot yet say what they want. Second, loss of skills, such as words or social games that disappear, is a reason to see the doctor promptly whatever the cause.
Can a child have both?
Yes. The CDC lists delayed language skills among the characteristics common in autistic children, and many autistic children also have a speech or language disorder. Some autistic children talk early and a lot but use language in unusual ways. Others have little spoken language for years and communicate with gestures, pictures or a device. This is why the question is rarely either-or, and why a good evaluation looks at speech, language and social communication together.
Which evaluation answers which question?
| Evaluation | Who does it | Question it answers | What it does not do |
|---|---|---|---|
| Hearing test | Audiologist | Is hearing loss part of the problem? | Does not assess language or autism |
| Speech-language evaluation | Speech-language pathologist (SLP) | Is there a speech or language disorder, and what kind? What should speech therapy target? | Usually does not provide a medical autism diagnosis on its own |
| Diagnostic autism evaluation | Developmental pediatrician, child psychologist, child psychiatrist, pediatric neurologist or another qualified licensed clinician, often with an SLP on the team | Does my child meet DSM-5 criteria for autism? What else might explain what we see? | Does not by itself set up school services |
| Early Steps evaluation (under 3) | Local Early Steps team | Is there a qualifying delay in communication or another area, and what services will help now? | Is an eligibility evaluation, not a medical diagnosis |
| School district evaluation (3 and up) | District team, including an SLP | Does my child qualify for exceptional student education, for example in language impairment, developmental delay or autism spectrum disorder? | School eligibility is not the same as a medical diagnosis; many insurers will not accept it as sole proof for ABA |
For ABA therapy through insurance, what usually counts is a medical diagnosis of autism from a qualified clinician. Payer policies we reviewed are explicit about this. UMR's ABA form says IEPs and school evaluations are "NOT acceptable as the sole proof of diagnosis." Evernorth (Cigna) says educational eligibility "may not meet criteria as a formal diagnosis." Lucet, a behavioral health company that manages ABA benefits for several health plans, says in its 2026 ABA policy that screening results are not an autism diagnosis and a complete diagnostic evaluation with an autism-specific standardized assessment is needed.
What does a Florida school evaluation for autism include?
If your child is 3 or older, Florida's rule for autism eligibility in schools (Rule 6A-6.03023) lists what the evaluation must include:
- behavioral observations across settings, targeting social interaction, social communication and repetitive behaviors;
- a social and developmental history from a parent interview;
- a psychological evaluation with at least one standardized instrument specific to autism;
- a language evaluation covering pragmatic and social communication, including an observation by a speech-language pathologist;
- a standardized assessment of adaptive behavior; and
- a functional behavioral assessment if behavior concerns are present.
That language piece is exactly the speech delay or autism question. A school team may find your child eligible under language impairment (Rule 6A-6.030121), developmental delay (for ages 3 through 9) or autism spectrum disorder, and the category can change at re-evaluation.
A decision checklist: what to do next
- Write down what you see using the rows of the comparison table, with examples. Short videos help.
- Ask your pediatrician for developmental and autism screening and a hearing check.
- If your child is under 3, refer to Early Steps yourself at 1-800-218-0001. It is free to families and does not need a doctor's referral.
- If your child is 3 to 5, contact your local FDLRS center or ask your school district in writing for an evaluation.
- If autism is a question, ask for a referral for a diagnostic autism evaluation now, because waits can be long. Speech therapy can start while you wait.
- If you plan to use insurance for therapy, call the number on your card and ask what diagnosis documentation the plan needs.
For the starting point by age, see my toddler isn't talking. If you are weighing therapies, ABA vs speech therapy explains how they differ and work together, and our guide on how ABA builds language, gestures and AAC skills shows what communication goals can look like.
How Hope Center can help
Hope Center offers diagnostic evaluations through our clinical director with a supervising licensed psychologist, and ABA therapy with weekly parent training. In-house speech therapy is planned from January 2027. We have no waitlist for ABA and can check your insurance benefits for free. Request a free consultation or call 561-337-8865.