Speech Delay in Children: When to Worry and What to Do
Dra. Paula Andrade
CRM-SP 204778 | RQE 131771 | Título SBP 2024
Licensed in Brazil — Itaim Bibi, São Paulo
If your child is not speaking as much as you expected for their age, it is completely natural to feel concerned. The good news: in most cases, speech delay is temporary and responds well to appropriate stimulation. But it is essential to know the difference between a normal variation in development and something that warrants investigation. This guide will help you understand language milestones by age, possible causes of speech delay, when to seek professional help, and how to stimulate speech at home. For expat families raising bilingual children in Brazil, we also address one of the most common myths — and explain why bilingualism does not cause speech delay. If you have concerns, the first step is always to talk to your pediatrician.
Quick Summary
→Language milestones vary, but there are clear benchmarks for each age range
→Speech delay is not the same as a language disorder: many children catch up spontaneously with proper stimulation
→Excessive screen time harms language development — Brazilian Pediatric Society recommends zero screens until age 2
→Bilingualism does NOT cause speech delay— this is a myth debunked by science
→A hearing assessment is essential— hearing problems are a common and treatable cause of speech delay
Language Milestones by Age: What to Expect
Understanding the developmental milestones helps you identify whether your child's language is on track. The table below shows what is typical at each stage — keep in mind that there is a range of normal, and not every child reaches each milestone at exactly the same time.
| Age | Understanding (Receptive) | Expression (Productive) |
|---|---|---|
| 0–3 months | Reacts to loud sounds; calms to familiar voice | Different cries; vocalizations (“aah,” “ooh”) |
| 3–6 months | Turns head toward sound; recognizes name | Babbling (“ba-ba,” “da-da”); laughs aloud |
| 6–9 months | Understands “no”; recognizes names of common objects | Varied babbling; imitates sounds; uses gestures (waves bye-bye) |
| 9–12 months | Follows simple commands with gesture (“give it to mommy”); understands several words | First meaningful words (“mama,” “dada”); points to request |
| 12–18 months | Points to named objects; follows 1-step instructions | 6–20 words; combines gestures + words |
| 18–24 months | Points to body parts; follows 2-step instructions | 50+ words; starts combining 2 words (“want water”) |
| 2–3 years | Understands complex sentences; grasps concepts (big/small) | 2–3 word sentences; vocabulary explosion (200–1,000 words) |
| 3–4 years | Understands “why” questions; follows simple stories | 4–5 word sentences; tells simple stories; strangers understand 75% |
| 4–5 years | Understands most of what is said; follows complex instructions | Fluent speech; uses complete sentences; recounts events in sequence |
Pediatrician's Tip
Comprehension (receptive language) typically develops before expression (productive language). If a child understands well, follows commands, and communicates with gestures, a delay in expressive speech tends to be more benign. During well-child visits, we assess both aspects separately.
Speech Delay vs Language Disorder: What Is the Difference?
Many parents confuse these two terms, but the distinction matters for prognosis and treatment:
Speech Delay (Late Talker)
- •Development follows the same sequence, just at a slower pace
- •Comprehension is usually preserved
- •Communication through gestures is good (points, requests)
- •Communicative intent is present (wants to communicate)
- •Many catch up spontaneously by age 3
Language Disorder (DLD)
- •Persistentdifficulty beyond age 4–5
- •Affects comprehension and/or expression
- •Functional impact (academic and social difficulties)
- •Requires prolonged speech therapy
- •Does not resolve spontaneously without intervention
Approximately 50–70% of childrenclassified as “late talkers” catch up spontaneously by age 3. However, those who do not recover need early intervention to prevent impact on school learning and social development.
Causes of Speech Delay in Children
Speech delay can have various causes, from benign situations to conditions that require medical investigation:
Common and Treatable Causes
- • Hearing loss — recurrent ear infections can cause mild loss that impacts speech
- • Excessive screen time— reduces verbal interaction and language stimulation
- • Limited verbal stimulation— children need conversational interaction
- • Prematurity— consider corrected age until age 2
- • Tongue tie(ankyloglossia) — can make certain sounds difficult to articulate
Conditions Requiring Investigation
- • Autism Spectrum Disorder (ASD) — speech delay combined with social interaction difficulties
- • Childhood apraxia of speech— difficulty with the motor planning of speech
- • Developmental Language Disorder (DLD) — persistent difficulty understanding and/or expressing language
- • Significant hearing loss— congenital or acquired
- • Genetic syndromes— such as Down syndrome, Fragile X, among others
Speech Delay and Autism: When to Suspect?
An isolated speech delay does not mean autism. Many children take longer to speak without being on the spectrum. However, when the delay is accompanied by limited eye contact, absence of communicative gestures, not responding to their name, or difficulty with social interaction, it is essential to investigate. Read our complete guide on autism signs to understand what to watch for. For expat families, understanding that Brazilian pediatricians routinely screen for ASD at 18 and 24 months can provide reassurance that this is being monitored.
Warning Signs: When to Be Concerned by Age
These are the signs that warrant a professional evaluation — they do not necessarily indicate a problem, but they deserve investigation:
Seek Evaluation if the Child:
- 12 months:Does not babble, does not use gestures (pointing, waving bye-bye), does not respond to their name
- 18 months:Does not speak any meaningful word; does not understand simple commands (“give it to mommy”)
- 24 months:Vocabulary smaller than 50 words; does not combine 2 words (“want water,” “mommy give”)
- 3 years:Speech unintelligible to strangers; does not form 3-word sentences; difficulty following simple instructions
- 4 years:Cannot tell simple stories; strangers do not understand most of what they say; omits or substitutes many sounds
- Any age:Lost skillsthey previously had (regression) — stopped saying words they used to say
Important: language regression (losing previously acquired words) always warrants urgent evaluation, regardless of age. Talk to your pediatrician immediately.
Concerned about your child's speech?
The first step is to talk to a pediatrician. Dr. Paula provides language development assessments with warmth and time for all your questions.
Talk to the PediatricianScreens and Speech Delay: What the Science Shows
Excessive screen time is one of the most studied factors in relation to language delay in children. The evidence is clear:
Brazilian Pediatric Society (SBP) Guidelines
- 0 to 2 years: ZERO screens.No type of screen — TV, phone, tablet. The brain needs real human interaction to develop language.
- 2 to 5 years: maximum 1 hour per day, preferably with educational content and adult supervision.
- Avoid screens during meals and in the 2 hours before bedtime.
These guidelines align with the American Academy of Pediatrics (AAP) and WHO recommendations, so expat families can be confident that the advice is consistent with international standards.
Studies show that each additional hour of screen time per day in children aged 1 to 3 is associated with a 49% increase in the risk of expressive language delay. The problem is not just what the screen shows, but what it replaces: conversation, play, reading, and face-to-face interaction — which are the true drivers of language development.
Does Bilingualism Cause Speech Delay? NO — And Science Confirms It
This is one of the most persistent myths about language development, and it is especially relevant for expat families raising children in Brazil. The scientific research is unanimous: children exposed to two or more languages from an early age do NOT show clinically significant language delay.
What the Evidence Shows
- Bilingual children reach the same language milestones as monolingual children in the same age range
- There may be language mixingin the same sentence (code-mixing) — this is normal and expected, not a sign of confusion
- Total vocabulary (adding both languages) is equivalent to or greater than that of monolingual children
- Bilingualism brings cognitive benefits: better executive function, mental flexibility, and selective attention
If your child is bilingual and shows a speech delay, investigate the same causes as in monolingual children — bilingualism is not the explanation. Never drop one language as a “solution” for speech delay.
For Expat Families in Brazil
If you speak English at home and your child attends a Portuguese- speaking school or daycare, this is a common and healthy bilingual setup. Your child may initially have a smaller vocabulary in each language compared to monolingual peers, but their total vocabulary across both languages will be equivalent or higher.
When seeking speech therapy (fonoaudiologia) in Brazil, look for a speech therapist experienced with bilingual children. In São Paulo, both private clinics and the public system (SUS) offer speech therapy, though private care typically offers shorter wait times and the option to find English-speaking professionals.
How the Assessment Is Done
When speech delay is suspected, the investigation should be systematic. In Brazil, the main evaluations include:
Hearing Assessment (BERA / Audiometry)
Mandatory first step. The auditory brainstem response test (BERA) or age-appropriate audiometry rules out hearing loss. Many children with recurrent ear infections may have mild conductive hearing loss that impacts speech.
Speech Therapy Assessment (Avaliação Fonoaudiológica)
The speech therapist (fonoaudiólogo) assesses receptive language, expressive language, pragmatics, articulation, and communication functionality. Standardized tests are administered according to the child's age.
Pediatric Global Developmental Assessment
The pediatrician assesses motor, cognitive, and social development to determine whether the delay is specific to language or part of a broader developmental delay.
Neuropediatrician (When Indicated)
When there is suspicion of ASD, global developmental delay, regression, or other neurological conditions, the neuropediatrician (neuropediatra) leads the complementary investigation.
10 Ways to Stimulate Speech at Home
Stimulation at home is as important as professional therapy. Here are evidence-based strategies you can apply every day:
Talk to your child constantly
Narrate your actions: “Now I'm putting on your blue shirt,” “Let's wash our hands.” Children learn language by hearing it in context. For bilingual families, speak naturally in whichever language feels most comfortable — consistency matters more than which language you choose.
Read books every day
Shared reading is one of the most powerful ways to stimulate language. Point to pictures, ask questions, let the child turn the pages. Books in both languages are a wonderful investment for bilingual households.
Wait for a response
After asking a question, wait 5–10 seconds. Do not answer for them. Giving time shows that you expect a response and encourages the attempt to speak.
Expand what they say
If the child says “water,” respond: “You want water? Let's get some cold water!” This models more complete sentences without correcting.
Sing songs and nursery rhymes
Children's songs with gestures (like “Head, Shoulders, Knees and Toes”) combine rhythm, repetition, and movement — a powerful trio for language development.
Play pretend
Symbolic play (playing house, pretend store, dolls) stimulates vocabulary, narration, and social interaction.
Avoid anticipating needs
If you always offer before the child asks, they have less motivation to use words. Create opportunities where they need to communicate.
Drastically reduce screen time
Replace screen time with free play, reading, and conversation. Human interaction is irreplaceable for language development.
Offer choices
“Do you want banana or apple?” This encourages the child to express themselves, even if they just point. Gradually encourage them to name the choice.
Socialize with other children
Interaction with peers at daycare or the playground is a powerful stimulus. Children learn language from each other naturally.
Pediatrician's Tip
Never directly correcta child's speech (“That's not how you say it!”). Instead, use the corrective mirroringtechnique: if they say “doggy seepy,” respond naturally “Yes, the doggy is sleepy!” This models the correct form without creating frustration.
When to See a Speech Therapist
The speech therapist (fonoaudiólogo in Brazil) is the professional specialized in language and communication. A speech therapy assessment is recommended when:
- The child does not reach the language milestones for their age (see table above)
- Speech is difficult to understand by people outside the family
- Substitutes many sounds in speech after age 4
- The child shows frustration from not being able to communicate
- There has been language regression at any age
- The pediatrician or school recommended an evaluation
Do not wait to “see if it gets better on its own.” Early intervention in language is one of the areas with the best outcomes — the sooner you start, the better the chances of complete recovery. An integrative approach allows the pediatrician, speech therapist, and other professionals to work together in a coordinated way.
When to See the Pediatrician
The pediatrician plays a fundamental role in the initial assessment of speech delay. Beyond knowing the child's complete history, they can:
- Assess global development— determine whether the delay is specific to speech or part of a broader picture
- Order hearing tests (BERA, audiometry) to rule out hearing loss
- Refer to a speech therapist and, when necessary, to a neuropediatrician
- Screen for signs of autism using the M-CHAT-R/F and other screening tools
- Guide the family on appropriate stimulation and screen time management
- Investigate organic causes such as recurrent ear infections, anemia, thyroid conditions, or other medical conditions
For you, as a parent:if you are worried about your child's speech, do not wait. The phrase “every child has their own timeline” is true to a point — but when there are warning signs, acting early makes all the difference.
Speech delay is one of the most common concerns in pediatric practice, and the vast majority of cases have a solution. You are not overreacting, and seeking help is the best thing you can do for your child.
Want to assess your child's speech development?
During the consultation, we evaluate the child's language comprehensively and compassionately, with time for all your concerns.
Talk to the PediatricianFrequently Asked Questions
At what age should a baby start talking?
First meaningful words (“mama,” “dada,” “give”) typically appear between 10 and 14 months. By 18 months, a child is expected to say at least a few isolated words. But before that, there are many important pre-verbal milestones: babbling (6–9 months), communicative gestures, and sound imitation. If by 12 months there is no babbling or gesturing, it is worth discussing with your pediatrician.
Is speech delay a sign of autism?
In most cases, no. An isolated speech delay is very common and, on its own, does not indicate autism. ASD involves difficulties in multiple areas: social communication, interaction, and repetitive behaviors. If the speech delay is accompanied by limited eye contact, absence of gestures, or difficulty with interaction, it is important to investigate. Read our guide on autism signs to understand the differences.
Does bilingualism cause speech delay?
No.Research shows that bilingual children reach the same language milestones as monolingual children. There may be language mixing (code-mixing), which is completely normal. Total vocabulary (across both languages) is equivalent to or greater than that of monolingual children. It is never recommended to drop a language as a “solution” for speech delay.
When should I see a speech therapist?
Seek a speech therapy evaluation when the child does not reach the language milestones for their age, when speech is difficult for strangers to understand after age 3, when there is language regression at any age, or when the pediatrician recommends it. Do not wait to “see if it gets better” — early intervention produces the best results. In Brazil, speech therapists are called fonoaudiólogos, and your pediatrician can provide referrals.
Do screens cause speech delay?
Excessive screen time is associatedwith speech delay, especially in children under 3. Studies show that each additional hour of screen time per day increases the risk of expressive language delay. The issue is that screens replace human interaction, which is the true driver of language. The Brazilian Pediatric Society recommends zero screens until age 2 and a maximum of 1 hour/day from 2 to 5 years — aligned with AAP and WHO guidelines.
Pediatrician's Tip
Trust your instincts.If you feel your child's speech is not developing as expected, talk to your pediatrician. It is much better to evaluate and find out everything is fine than to wait and miss an important window for intervention. Bring videos of your child at home to the appointment — they help enormously with the assessment. Keep your well-child visits on schedule — they are the best opportunity to monitor language development. For English-speaking families in São Paulo, Dr. Paula provides bilingual consultations with detailed developmental tracking.
Concerned About Your Child's Speech?
Schedule a language development assessment with Dr. Paula. Bilingual, compassionate care with time for all your questions.
Consultório no Itaim Bibi, São Paulo | CRM-SP 204778 | RQE 131771
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