Last updated 2026-07-09
TL;DR
If your toddler has fewer words than expected for their age, get them evaluated now rather than later. Early intervention, meaning evaluation and therapy before age 3, makes a real difference in outcomes, and federal law (IDEA) guarantees free evaluation and services for kids under 3. A referral to your state's Part C program costs nothing. Waiting does real developmental harm.
What counts as 'not talking' in a toddler?
Pediatricians generally work from the same rough benchmarks. By 12 months, a child should babble and say one or two words like "mama" or "dada." By 18 months, 10 to 20 words. By 24 months, around 50 words along with two-word combinations like "more milk" or "daddy go." By 36 months, sentences of three or more words, with strangers able to understand about 75 percent of what the child says [1].
A toddler who misses those marks often gets called a "late talker," which isn't a diagnosis so much as a description: language is coming in more slowly than typical. Some late talkers catch up on their own (researchers sometimes call this group "late bloomers"), but nobody can reliably tell at 18 months which child will bloom and which won't. The American Academy of Pediatrics is blunt about this: waiting to see how things go isn't a neutral choice. Months matter during early brain development [2].
"Not talking" also isn't one thing. Some kids make no sounds at all. Some have words and then lose them. Some have words but don't use them to communicate. Others understand plenty but aren't speaking themselves. Every one of these patterns is worth an evaluation, and the causes behind them can be very different.
How common are speech delays, really?
Speech and language delay is the most common developmental delay in young children. Studies put prevalence between 5 and 10 percent of preschool-age children, and some estimates for expressive language delay alone run closer to 15 percent at 24 months [3][10].
The CDC estimates that about 1 in 6 children in the United States has a developmental disability, and communication delays are among the most frequently identified [4]. Boys are identified 2 to 3 times more often than girls, though researchers don't fully understand why [10].
The window here is real. The brain is most plastic for language learning in the first three years of life, and services started before age 3 consistently show stronger outcomes than the same services started later. That's not opinion, it's the finding that built the federal early intervention system in the first place.
What causes a toddler to not talk?
There's a long list of possible causes, and most children who aren't talking yet have more than one factor at play.
Start by ruling out hearing loss. A child who can't hear clearly won't learn to talk normally, and mild or moderate hearing loss is easy for parents to miss because kids compensate in clever ways. Get a full audiological exam, not just a pediatrician's office screen.
Oral motor difficulties are another common piece: the muscles of the mouth, tongue, and lips have to coordinate precisely for speech, and some children have weakness or coordination problems there. Childhood apraxia of speech is a more specific motor-planning disorder, where the brain struggles to sequence the movements for words even though the child knows exactly what they want to say.
Autism spectrum disorder is also part of the picture. Delayed or absent speech is one of the early signs looked at during autism assessment. Not every late talker is autistic, and not every autistic child is a late talker, but the overlap is big enough that a developmental pediatrician evaluation is usually recommended alongside the speech evaluation.
Developmental language disorder (DLD) is a language learning difficulty that isn't explained by hearing loss, autism, or intellectual disability. It affects roughly 7 percent of children and often persists into adulthood without intervention [3].
Environmental factors matter too: very limited language exposure, chronic illness, prolonged ear infections that cause fluctuating hearing, or significant stress at home can all slow language development with no underlying neurological cause at all. And children born prematurely often show adjusted delays across developmental areas, speech included.
A speech-language pathologist (SLP) can't diagnose autism or hearing loss; those need different specialists. But a good SLP evaluation will flag what other referrals are needed, and therapy can start working on communication regardless of the underlying cause.
What early intervention is and who qualifies
Early intervention (EI) is a federally mandated system of services for children from birth through age 2 years, 11 months, built on the Individuals with Disabilities Education Act, specifically Part C. The law requires states to make early intervention services available to any eligible infant or toddler with a developmental delay or a condition that has a high probability of causing one [5].
You don't need a doctor's referral, though one can help. You can self-refer straight to your state's Part C program (every state has one), and once you contact them, they have 45 days to complete an evaluation. If your child qualifies, services are provided under an Individualized Family Service Plan (IFSP), and depending on your state and family income, they may be free or very low cost [5].
Eligibility varies by state. Some use a 25 percent delay in one area as the threshold, others use 20 percent or a different formula entirely, so a child who doesn't clearly qualify in one state might qualify in another. If you're denied and you believe your child needs services, you have the right to dispute that finding.
Once a child turns 3, they age out of Part C, and services shift to Part B of IDEA, administered through the school district rather than the state EI program. That transition should begin around the child's second birthday, and a lot of families get blindsided by it. Knowing it's coming ahead of time gives you room to plan [11].
Early intervention is free to access, legally required, and the best-studied support available for young children with communication delays. There's no good reason to wait for it.
How early is early enough?
Earlier is genuinely better. Research on neural plasticity is consistent: the brain changes more readily in response to language input before age 3 than after, and services started at 18 to 24 months show stronger gains than identical services started at 36 months [6].
The AAP recommends developmental surveillance at every well-child visit, formal screening at 9, 18, and 30 months using validated tools, and autism-specific screening at 18 and 24 months. If you or your pediatrician has any concern at any of those visits, the recommendation is referral, not watchful waiting [2].
If your child is 12 months old and not babbling, flag it now rather than waiting until 18 months. If your child is 18 months with fewer than 10 words, contact your state's EI program today instead of waiting for the two-year checkup.
A lot of parents feel pressure to give it a few more months, and that pressure is understandable but costly. A child who could have started therapy at 18 months but gets it at 30 months has lost a year of the most powerful learning period of their life. Waiting feels safe. It usually isn't.
What happens during a speech-language evaluation
A speech therapy evaluation for a toddler looks nothing like what most people picture. There's no sitting at a table answering questions. A skilled SLP working with young children mostly plays, watching how the child communicates, what sounds they make, how they respond to language, and how they interact and imitate.
The evaluation usually covers what the child understands (receptive language), what and how they say things (expressive language), speech sounds, oral motor function, social communication, and play skills, which track closely with language development.
The SLP also takes a detailed case history from parents: birth history, feeding history, ear infection history, family history of speech or language delays, and what the home language environment looks like.
A full evaluation takes 60 to 90 minutes on average, though some children need more than one session, since toddlers have bad days and the evaluation needs to reflect real abilities rather than a one-time snapshot.
Afterward, the SLP writes up findings, a profile of the child's communication strengths and needs, and recommendations. If the child qualifies for services, therapy begins and goals get set with parents at the table.
What early intervention therapy actually looks like
For children under 3, therapy almost always happens at home rather than in a clinic. The therapist comes to you, and that's not just a convenience: skills a child learns in the place they actually live carry over better than skills practiced in a therapy room [5].
Sessions run 30 to 60 minutes, one to three times a week, depending on severity. But most parents underestimate something important: the session itself is a small piece of the intervention. The bigger job is coaching parents to do the same things all day, every day. An SLP might see your child three hours a week. You're with them 50-plus. The math isn't close.
A few approaches for toddlers have solid research behind them. Hanen's It Takes Two to Talk is a parent-training program that teaches parents to follow the child's lead, create chances to communicate, and respond in ways that build language [9]. Milieu teaching and naturalistic developmental behavioral interventions embed language goals into play and daily routines instead of drill sessions, and they consistently produce more generalized gains for young children than structured drills do. And for children who aren't talking yet, introducing AAC devices or picture-based communication doesn't hold speech back, it supports it. The idea that AAC makes a child lazy or dependent is a stubborn myth among some parents and even some older clinicians, but the evidence points the other way [7].
When a child's speech errors point to a motor-planning problem, therapists use techniques specific to apraxia of speech. These look different from general language therapy and require a therapist trained specifically in that area.
What you can do at home right now
You don't need to wait for an evaluation to start. The strategies below have research behind them, and they're the same ones SLPs teach parents during coaching sessions. None of them require equipment, just attention and consistency.
Follow your child's lead: notice what they're into and join them there, commenting rather than redirecting them to what you think they should be doing. A child pushing a toy car hears more useful language from "car go, car go fast" than from being steered toward a book. Ask fewer questions and make more comments. Most parents of late talkers ask more questions than they realize ("What's that? Can you say ball? What color is it?"), and questions put pressure on a child, while comments give the same rich language without the pressure ("Oh, that's a big ball. Ball is bouncing. Bounce bounce bounce."). Get down on the floor so your face is at their level: seeing your mouth move helps, and it also signals a real back-and-forth rather than an adult talking at them. After you say something or set up a chance for them to respond, count to yourself for 5 to 10 seconds before jumping in. Most parents fill that silence right away, but that's exactly where a child's attempt lives.
When you read together, let the child lead instead of following the text: let them point at pictures, label whatever they point to, and treat any sound they make as meaningful ("Doggy! Yes, that's a doggy."). And when they do talk, expand on it rather than correcting it: if they say "ball," you say "red ball" or "throw ball," modeling the next step up without making them repeat anything.
None of this replaces a real evaluation, but it isn't neutral either. Starting today matters.
Finding early intervention services near you
The fastest path is Child Find, the IDEA-mandated process for identifying children who need services. Every state runs an EI program with a single point of entry, and you can contact it directly. The CDC keeps a state-by-state directory of early intervention contacts, and ASHA (the American Speech-Language-Hearing Association) has a "Find a Professional" locator if you'd rather pursue a private evaluation outside the public system.
To find your state's program, search "[your state] early intervention Part C," call your pediatrician's office and ask for a referral (this can speed up the timeline), or call the state program directly and self-refer.
Private evaluation and therapy costs vary widely: a single SLP evaluation typically runs $150 to $400 out of pocket, and weekly sessions commonly run $100 to $300 each without insurance. Coverage has improved since the Mental Health Parity and Addiction Equity Act, but gaps remain, so call your insurer first. If cost is a barrier, the public EI system is your best bet. Depending on your state and family income, services can be fully funded.
Between sessions, tools like Little Words can help parents practice language-building strategies daily, guided by their child's specific goals. It won't replace an SLP, but it can make the hours between sessions more intentional.
Does bilingualism affect evaluation?
This is one of the most common, and most consequential, misunderstandings in pediatric speech-language pathology. Being raised bilingual does not cause speech or language delay. Children learning two languages at once may have a somewhat smaller vocabulary in each individual language than monolingual peers their age, but their combined vocabulary across both languages is typically on par. A bilingual child who seems delayed needs to be evaluated in both languages, not just the dominant one [8].
The trouble is that many SLPs don't speak a child's home language, and standardized tests normed on English-speaking children will underestimate a bilingual child's real abilities. That leads to some children being diagnosed with delays they don't have, and others being missed entirely.
If your child is bilingual, ask specifically for an SLP with experience working with bilingual children, insist on evaluation in both languages, and bring a fluent family member if you need help during the case history. ASHA spells this out in its guidance [8]. The real question isn't whether your child knows as many English words as a monolingual English-speaking peer. It's whether they communicate effectively across both languages, and whether there are signs of delay in both.
What if your child doesn't qualify for services?
This happens, and it's frustrating: some children worry their parents but don't quite meet a state's eligibility thresholds. You still have options. You can appeal: every state's EI program has a dispute resolution process, and if you think the evaluation was incomplete, you can request a second one. You can go private: an SLP in private practice isn't bound by state eligibility criteria and can evaluate and treat any child whose parents are paying, with insurance covering some or all of it. Many EI programs also run a monitoring track for borderline children, with periodic check-ins and a fast track into services if things don't improve, so ask if your state offers that.
Even if therapy doesn't start, ask for a detailed report with specific recommendations: what to do at home, what to watch for, and when to re-evaluate. A good SLP provides this regardless of eligibility. And don't read "doesn't qualify" as "is fine." It means "doesn't meet the administrative threshold for publicly funded services," which is a very different thing.
When a late talker needs more than speech therapy
Speech therapy is the right starting point for most late talkers, but sometimes a communication delay is a symptom of something that needs its own evaluation. Limited eye contact, not responding to their name by 12 months, not pointing to share interest by 14 months, or repetitive behaviors and rigid play patterns all warrant an autism evaluation. That doesn't mean the SLP steps back, it means a developmental pediatrician or psychologist joins the picture too. Autism spectrum speech therapy has its own evidence base and overlaps a great deal with early intervention approaches, though some parts differ. Speech errors that are unusually severe, inconsistent, or that don't respond to typical articulation work call for an evaluation specifically for childhood apraxia of speech, which needs different therapy techniques than a general delay. Frequent ear infections or a failed hearing screen mean audiology should be evaluated before or alongside speech, not after. And feeding difficulties alongside speech delays point to possible oral motor involvement that needs its own look.
None of this should delay an EI referral. You can pursue several evaluations at once, and the EI evaluation is usually the fastest to access. It will often tell you which other specialists you need to see next.
What's a realistic timeline for progress once therapy starts?
There's no single honest answer here. It depends on what's causing the delay, how severe it is, how early therapy started, and how consistently strategies get used at home, plus factors specific to your child.
Research offers some guidance, at least. A 2015 systematic review in Pediatrics found that early speech-language intervention produces meaningful improvements in expressive and receptive language for late talkers, with effect sizes generally moderate to large [6]. Kids who start before age 2.5 tend to show faster gains than those who start later.
Some children with mild expressive delays who start therapy around 18 to 24 months are discharged within 6 to 12 months, having caught up to peers. Others, especially kids with autism, CAS, or more significant language disorders, need support for years. That's not failure. It's just the nature of the condition.
Rather than asking when your child will be caught up, watch whether they're making progress. Steady forward movement, even slow movement, is the goal. A child who picks up 5 new words a week during therapy is doing well even if they're still behind for their age. Stalling or regression is what should prompt you to reassess.
If you want to stay close to progress between sessions, Little Words gives you a structured way to practice the same strategies your SLP is using, adapted to your child's stage.
Frequently asked questions
At what age should I be worried if my toddler isn't talking?
Concern is appropriate whenever a child misses milestones, at any age. A 12-month-old should babble and say a word or two. An 18-month-old should have 10 to 20 words. A 24-month-old should have around 50 words and be combining two words. If your child misses any of these markers, contact your state's early intervention program or your pediatrician. Waiting for the next milestone to pass before you act costs real developmental time.
Can a toddler be a late talker and not be autistic?
Yes, absolutely. Most late talkers are not autistic. Late talking has many causes, including hearing loss, developmental language disorder, motor-planning difficulties, and environmental factors. That said, delayed speech is one early sign that prompts autism screening, so both evaluations often happen side by side. Being evaluated for autism doesn't mean your child has it. It means you're being thorough.
Does early intervention really make a difference, or do most kids catch up on their own?
Some late talkers do catch up without any intervention, roughly 50 to 70 percent of children with isolated expressive delay at age 2 in some studies. The problem is that there's no reliable way to predict who will catch up and who won't. Research consistently shows early intervention speeds progress and lowers the risk of ongoing trouble with literacy, social language, and academics later on. The cost of early therapy is small compared to the cost of not catching up.
Is early intervention free?
Under federal law (IDEA Part C), evaluation is free to every family regardless of income. Therapy services may be free or come with a sliding-scale fee depending on your state's policies and your family's income. Many states provide all services at no cost. Contact your state's Part C program to learn the specific rules where you live. Even states that charge fees typically cap costs at a modest level.
How do I get my toddler evaluated for speech delay?
You have two paths. Ask your pediatrician for a referral to your state's early intervention program or to a private SLP, or skip that step and self-refer directly. Every state's Part C program accepts parent referrals. Search "[your state] early intervention" to find the intake number. Once you contact the program, they're required to evaluate within 45 days under federal law.
What's the difference between a speech delay and a language delay?
Speech is the physical production of sounds, basically how clearly a child articulates words. Language is understanding and using words and grammar to communicate, regardless of how clearly those words come out. A child can have one without the other: one with a speech delay might have clear ideas but be hard to understand, while one with a language delay might speak clearly but use very few words or struggle to understand others.
Should I use sign language with my toddler who isn't talking?
Yes, and you don't need to wait for professional guidance to start. Signing doesn't delay speech, and both research and clinical experience back that up. It gives a child a way to communicate before speech is available, cuts down on frustration, and often encourages spoken words to emerge alongside the signs. Teach signs for what your child cares about most, things like "more," "eat," "all done," "water," "up." Keep it simple and consistent.
Does screen time cause speech delays?
The AAP recommends avoiding screen time other than video chatting for children under 18 months, and limiting it for 18 to 24 month olds [12]. The concern isn't that screens are directly toxic to language development. It's that screen time takes the place of the face-to-face, responsive back-and-forth that language learning depends on. A child watching a screen isn't getting the conversational turns and contingent responses their brain needs. Swapping some screen time for interaction is well worth trying.
What if I can't afford a private speech therapist?
Start with the public system. IDEA Part C guarantees free evaluation and low- or no-cost services for children under 3 with developmental delays. After age 3, your school district's special education program takes over, also funded under IDEA. University training clinics often provide evaluation and therapy at greatly reduced rates, and Federally Qualified Health Centers offer speech services on a sliding scale. Cost shouldn't be a reason to wait; the public system exists for exactly this.
Can I do speech therapy online with a toddler?
Telehealth speech therapy for toddlers became much more common after 2020 and has reasonable evidence behind it, especially for parent coaching, where the SLP teaches you techniques to use at home. It works less well for in-depth motor assessments that need direct observation, and some children under 2 don't tolerate screens well enough for a productive session. Still, it's worth trying, especially if in-person services have a long wait or are hard to reach geographically.
My toddler had words and then lost them. Is that different from just being a late talker?
Yes, and it should be evaluated urgently. Losing language skills that were previously present (called regression) is not typical development. It's one of the red flags specifically listed in autism screening guidelines, and it also warrants neurological evaluation. Don't wait for a routine appointment: contact your pediatrician now and tell them your child has lost words. This gets treated as a higher priority than straightforward late talking.
How long does early intervention therapy usually last?
It varies a lot. Children with mild expressive delays sometimes meet their goals within 6 to 12 months. Children with more significant delays, autism, or conditions like childhood apraxia of speech often need services well beyond age 3 and move into school-based therapy at that point. The EI program itself only runs through age 2 years and 11 months; after that, services continue through your school district under Part B of IDEA.
What should I look for in a speech-language pathologist for my toddler?
Look for an SLP who holds the Certificate of Clinical Competence from ASHA (CCC-SLP), has specific experience with children under 3, and practices parent coaching rather than relying only on child-directed drill. Ask whether they've worked with your specific concerns, whether that's autism, apraxia, or bilingual children. Fit with your child and family matters too. You'll spend a lot of time with this person, and the relationship needs to work.
Sources
- ASHA, Speech and Language Developmental Milestones: Communication milestones by age: 12 months (1-2 words), 18 months (10-20 words), 24 months (50 words and two-word combinations), 36 months (sentences of 3+ words, 75% intelligibility to strangers)
- American Academy of Pediatrics, Developmental Surveillance and Screening Policy: AAP recommends formal developmental screening at 9, 18, and 30 months; autism-specific screening at 18 and 24 months; watchful waiting is not recommended when delay is suspected
- Norbury CF et al., 'The impact of nonverbal ability on prevalence and clinical presentation of language disorder,' Journal of Child Psychology and Psychiatry, 2016: Developmental language disorder affects approximately 7% of children; prevalence of expressive language delay at 24 months estimated up to 15% in some populations
- CDC, Developmental Disabilities: About 1 in 6 children in the United States has a developmental disability; communication delays are among the most frequently identified
- U.S. Department of Education, IDEA Part C (Infants and Toddlers with Disabilities): IDEA Part C guarantees free evaluation and early intervention services for children birth through age 2 years 11 months with developmental delays; natural environment service delivery is required; 45-day evaluation timeline mandated
- Wallace IF et al., 'Screening for Speech and Language Delay and Disorders in Children Age 5 Years and Younger,' Pediatrics, 2015: Systematic review found early speech-language intervention produces meaningful improvements in expressive and receptive language outcomes for late talkers with effect sizes in the moderate to large range; earlier start associated with stronger gains
- ASHA, Augmentative and Alternative Communication (AAC): Research does not support the concern that introducing AAC reduces speech; evidence shows AAC supports development of natural speech in young children
- ASHA, Bilingual Service Delivery Practice Portal: Being raised bilingual does not cause speech or language delay; evaluation of bilingual children must include both languages; standardized tests normed on English-only populations will underestimate bilingual children's abilities
- Hanen Centre, It Takes Two to Talk Program: Hanen's It Takes Two to Talk is a parent-training program with research support for improving language outcomes in late-talking toddlers through parent coaching
- NIDCD (NIH), Statistics on Voice, Speech, and Language: Speech and language delay affects 5-10% of preschool-age children; boys are identified 2-3 times more often than girls
- U.S. Department of Education, IDEA Part B (School-Age Services): At age 3, children transition from Part C early intervention to Part B school district services under IDEA; transition planning should begin around the child's second birthday
- AAP, Screen Time and Children: AAP recommends avoiding screen time other than video chatting for children under 18 months; for 18-24 month olds, high-quality programming only with caregiver co-viewing