Early Communication Milestones and When to Consider an Autism Evaluation
By Michelle McGuinness, M.A., CCC-SLP | Aldea
Maybe your baby is smiling but isn’t making many sounds yet. Or you noticed your toddler points less than other children their age.
These moments can leave you asking if your child’s early communication milestones are on track.
But they just might be.
Communication develops long before a child says their first word. Babies and toddlers learn to connect with others through sounds, facial expressions, gestures, eye contact, and shared interactions before spoken language begins.
Understanding these early steps can help you support your child’s development, recognize possible concerns, and know when additional support may be helpful.
Early Speech and Communication Milestones (Birth to Age 3)
Many parents think communication begins when their child says “mama” or “dada.” However, children begin building communication skills much earlier.
Research explains how a child’s speech and language develop during the first three years of life and highlights that early communication develops through exposure to sounds, interactions, and language-rich environments.
These early baby communication milestones show how children learn to connect before using words.
Here are general child language development milestones by age:
Birth to 6 Months
Reacts to sounds: Startles at loud noises, turns toward familiar voices
Makes eye contact: Establishes and holds gaze with caregivers
Social smiling: Smiles in response to faces and voices, typically by 2 months
Vocalizes: Produces cooing, gurgling, and early vowel sounds
Attends to faces: Watches faces intently, especially during feeding and play
6 to 12 Months
Responds to name: Consistently turns or looks when called
Babbles: Uses strings of consonant-vowel combinations like "bababa" or "mamama"
Uses gestures: Waves bye-bye, raises arms to be picked up, points to objects of interest
Early words: Some children begin producing first words like "mama," "dada," or "ball" near 12 months
Joint attention: Looks back and forth between a person and an object to share interest
12 to 24 Months
First words: Uses at least 5–10 meaningful words by 15–18 months; vocabulary grows to 50+ words by 24 months
Word combinations: Begins putting two words together ("more milk," "daddy go") by around 18–24 months
Follows directions: Responds to simple one-step instructions like "give me the cup"
Communicative intent: Uses words or gestures purposefully to request, comment, or protest
Imitates: Copies actions and words from others during play
2 to 3 Years
Short sentences: Combines 3–4 words into simple phrases ("I want the ball," "Where is doggy?")
Asks questions: Begins using "what," "where," and "who"
Understandable speech: Parents and familiar adults understand most of what the child says; strangers understand about 50–75%
Engages in pretend play: Uses objects symbolically (a block as a phone, a box as a car)
Conversational turn-taking: Participates in back-and-forth exchanges, even if brief
Clinical Note: Missing milestones at one checkpoint doesn't automatically indicate a disorder. However, a pattern of delays especially across social, language, and behavioral domains warrants professional evaluation.
What if your child is not meeting communication milestones?
A difference in communication development doesn’t always mean there is a serious concern. Some children may simply need extra support with speech and language, while others may communicate and interact with the world around them differently.
When looking at your child’s development, consider the following pointers:
Communication attempts: does your child try to express needs through sounds, gestures, facial expressions, or words?
Understanding language: does your child respond to simple directions or familiar words?
Social interaction: does your child engage with you through smiles, sounds, play, or shared activities?
Progress over time: is your child continuing to develop new communication skills?
If your child is developing differently, understanding the reason behind those differences can help you find the right support. But if not, consider seeking an evaluation to confirm your child’s language development progress.
Red Flags: Signs That May Warrant an Autism Evaluation
The following signs do not confirm an autism diagnosis.
They are indicators that a developmental or autism-specific evaluation would be a valuable and appropriate next step. Early evaluation is always worthwhile, and there is no downside to checking in with a qualified professional.
Consider requesting an autism evaluation if your child:
Is not babbling or making sounds by 6–9 months
Does not respond to their name by 12 months
Has no words by 15–16 months
Has lost previously acquired words or social skills at any age (regression is a significant red flag)
Does not use two-word phrases by 24 months
Avoids or does not maintain eye contact
Rarely uses gestures such as pointing, waving, or showing
Does not follow a point when someone directs their attention
Shows limited interest in other children or social interaction
Repeats words or phrases out of context (echolalia), especially without communicative intent
Engages in repetitive behaviors: hand flapping, rocking, spinning, or lining up objects
Has strong or unusual reactions to sensory input (lights, sounds, textures, tastes)
Is distressed by changes in routine or transitions in ways that significantly impact daily life
Plays with toys in atypical ways (focuses on parts of objects rather than the whole toy)
Shows limited or no pretend play by 18–24 months
These behaviors exist on a spectrum, and many children who display some of them will not receive an autism diagnosis. What matters is that a qualified clinician evaluates the full picture of your child's development rather than relying on a single symptom.
What Is an Autism Evaluation and What Does It Include?
An autism evaluation is a comprehensive, multi-part assessment conducted by qualified professionals, typically a licensed clinical psychologist, or a team that may include a speech-language pathologist, occupational therapist, and developmental pediatrician.
At Aldea, our evaluations are thorough, child-centered, and family-informed.
What Our Evaluation Process Includes
1. Parent Interview and Developmental History
We begin by speaking with you. You know your child best. We gather detailed information about your child's developmental history, medical background, family history, and your specific concerns.
2. Standardized Diagnostic Tools
We use gold-standard, evidence-based instruments including:
The ADOS-2 (Autism Diagnostic Observation Schedule, Second Edition) — a structured play-based observation used to evaluate social communication and repetitive behaviors
The ADI-R (Autism Diagnostic Interview – Revised) — a structured caregiver interview examining developmental history
Cognitive and adaptive behavior assessments as appropriate.
3. Speech and Language Assessment
A speech-language pathologist evaluates expressive and receptive language, pragmatic (social) communication, and articulation. This helps differentiate autism spectrum disorder from speech-language delays that may have a different cause and intervention path.
4. Behavioral Observation
Clinicians observe your child in naturalistic and structured contexts to assess how they communicate, play, regulate their behavior, and interact socially.
5. Comprehensive Written Report and Feedback Session
Following the evaluation, you receive a detailed written report with findings, diagnosis (if applicable), and specific recommendations. We also schedule a feedback session to walk you through the results and answer your questions.
What Happens After an Autism Diagnosis?
Receiving an autism diagnosis for your child can bring a mix of emotions: relief at finally having answers, grief, uncertainty about what comes next, and often, a renewed sense of purpose and direction.
A diagnosis is not a limit. It is a starting point.
With a clear diagnosis, families can access:
Speech-Language Therapy
Targeting expressive and receptive language, social communication, pragmatic skills, and functional communication strategies.
Occupational Therapy
Addressing sensory processing, fine motor skills, self-care, and daily living tasks.
Applied Behavior Analysis (ABA)
A structured, evidence-based approach to building communication, social, and adaptive skills while reducing behaviors that interfere with learning.
Social Skills Groups
Structured peer interaction settings where children practice social communication in a supportive environment.
School-Based Supports
With a diagnosis, families can request a comprehensive evaluation through their school district and may qualify for an Individualized Education Program (IEP) or Section 504 plan.
Parent Coaching and Family Support
Helping parents understand their child's profile and implement strategies consistently across home, school, and community settings.
What can you do at home before your child’s evaluation?
While waiting for an evaluation, or considering one, you can encourage your child’s communication skills during everyday routines.
You don’t need special activities or expensive materials. The mundane routines during play, meals, bath time, and getting dressed are enough.
Try these strategies:
1. Follow your child's interests
Children often communicate more when they are engaged with something they enjoy.
If your child is playing with cars, talk about what they are doing:
“Red car.”“Car goes fast.” “More cars.”
Following your child’s attention helps create opportunities for connection and language.
2. Give your child time to respond
Many parents quickly fill the silence when their child doesn’t answer. Instead, pause and give your child a chance to respond through:
sounds
gestures
facial expressions
pointing
words
A child doesn’t need to use spoken language to communicate successfully. The little gestures and sounds are an effective way for them to communicate.
3. Expand what your child communicates
When your child uses a sound, gesture, or word, add a little more information.
For example:
Your child says: “Dog.”
You can respond: “Big dog.” “Dog running.”
This helps children learn how words connect.
4. Use gestures and everyday routines
Gestures like pointing, waving, reaching, and showing objects are important parts of early communication.
You can encourage these skills by:
pointing to objects while naming them
waving goodbye during routines
showing your child choices
using simple gestures alongside words
These moments support both communication and social connection.
5. Read and sing together
Books and songs create repeated opportunities for children to hear language.
You can:
name pictures
pause before familiar words
copy sounds from animals
sing songs with actions
Repeated exposure helps children understand words and participate in interactions.
Why Early Intervention Makes a Difference
The science on early intervention is clear and compelling.
The brain's plasticity, its capacity to form new connections and adapt, is at its peak in the first few years of life. That's why early identification and early therapy produce significantly better outcomes than waiting.
Research consistently shows that children who begin autism-specific intervention before age 3 make greater gains in:
Language and communication skills
Adaptive functioning (daily living, self-care, independence)
Social engagement and peer relationships
Cognitive development and academic readiness
Reduction of behaviors that interfere with learning and connection
The goal of early intervention is not to change who a child is. It is to give them tools, communication strategies, coping skills, and social understanding that help them engage with the world in ways that work for them.
Even if a formal diagnosis is not made following an evaluation, identifying areas of delay early connects families to speech therapy, developmental support, or school-based services that can make a significant difference over time.
How Aldea Supports Families Through the Evaluation Process
At Aldea, we understand that pursuing an evaluation can feel overwhelming.
Our team is here to make the process as clear, accessible, and supportive as possible, from your first phone call through post-evaluation recommendations.
What sets Aldea apart:
Licensed clinical psychologists and certified speech-language pathologists with expertise in autism, ADHD, and related developmental differences
Play-based, child-centered evaluations that feel natural and low-stress for young children
Comprehensive reports with actionable recommendations for therapy, school, and home
Affordable diagnostic evaluations with interest-free payment plans
Fast scheduling; we know that waiting is one of the hardest parts
Virtual evaluation options available statewide in Florida, with in-person services at select locations
Family-centered approach: we treat parents and caregivers as essential partners in the evaluation and support process
You do not need a referral from a pediatrician or school to schedule an evaluation at Aldea. You can reach out directly.
Frequently Asked Questions (FAQ)
At what age can a child be evaluated for autism?
Autism can be reliably diagnosed as early as 18–24 months by a trained clinician using appropriate diagnostic tools. If you have concerns before that age, a developmental screening is still worthwhile. In general, the earlier you identify a concern, the sooner intervention can begin. No age is "too early" to ask questions.
My child's pediatrician says to "wait and see." Should I get a second opinion?
Pediatricians play an important role, but developmental specialists, including clinical psychologists and speech-language pathologists, are better equipped to conduct a full autism evaluation. If your gut tells you something is worth exploring, trust that instinct. You do not need a referral to access a developmental or autism evaluation through Aldea, and seeking a second opinion is always appropriate.
What is the difference between a speech delay and autism?
Speech delay and autism can overlap, but they are not the same. A child can have a speech delay without autism, and a child with autism may have varying levels of language ability from minimally verbal to highly verbal. The key difference often lies in social communication: children with autism typically show differences in eye contact, joint attention, gesture use, and social reciprocity that go beyond language alone. A comprehensive evaluation assesses all of these areas to provide a clear picture.
Does my child have to "look like they have autism" to get evaluated?
No. Autism presents very differently across individuals — across genders, ages, cultural backgrounds, and intellectual profiles. Girls and children who are highly verbal are frequently underidentified because their presentations may not match common stereotypes. If you are concerned about your child's social communication, interaction style, sensory responses, or behavior patterns, those concerns are valid regardless of how your child "looks" on the surface.
What if the evaluation comes back negative?
A negative result, meaning autism is not diagnosed, is still valuable information. It often clarifies that other factors are at play (such as a language delay, anxiety, sensory processing differences, or ADHD) and guides families toward the most appropriate support. Many children who are evaluated but do not receive an autism diagnosis still benefit from speech therapy or other services identified through the evaluation process.
How long does an autism evaluation take at Aldea?
The evaluation process typically involves one to two appointments, followed by a feedback session. Total assessment time varies depending on the child's age and the scope of the evaluation, but families generally receive their written report within a few weeks of the assessment. We prioritize clear communication and fast turnaround.
Will insurance cover the evaluation?
Coverage varies by insurance plan. Aldea offers affordable self-pay rates and interest-free payment plans for families navigating out-of-pocket costs. Our team can help you understand your options.
My child was recently diagnosed. What do I do next?
Take a breath and know you are not alone. After receiving your evaluation report, your Aldea clinician will walk you through the findings and provide specific recommendations for next steps. This may include speech therapy, occupational therapy, ABA services, school-based supports, or parent coaching. We can help connect you with appropriate resources in your area.
Can I request an evaluation even if I'm not sure there's a problem?
Absolutely. You do not need certainty to seek an evaluation; only a concern. Many families come to Aldea saying, "Something just feels off, but I'm not sure." That is enough. Trust your instincts. Early screening and evaluation are low-risk and high-value.
Should I wait to see if my child catches up?
Many parents wonder whether to wait when their child is not meeting expected milestones.
While some children develop skills later, it can help to seek guidance when concerns arise, especially if communication differences continue or occur alongside social, behavioral, or developmental concerns.
Early support gives families more information about what their child needs and helps them make informed decisions.
If you are unsure where to begin, Aldea’s developmental milestone checklist can help you organize your observations before speaking with a professional.
This article was written by Michelle McGuinness, M.A., CCC-SLP, a certified speech-language pathologist at Aldea. It is intended for informational purposes and does not constitute medical or diagnostic advice. Please consult a qualified clinician for concerns about your child's development.