Communication Milestones in Babies and Toddlers: What Twin Parents Should Know
When you have twins, it is almost impossible not to compare them.
One baby may start babbling constantly while the other is quieter. One twin may point, wave, and imitate everything you do while the other seems more interested in observing. Later, one toddler may suddenly start putting words together while their twin is still communicating mostly through gestures and individual words.
Some differences between twins are completely normal. Children develop communication skills at their own pace, even when they are growing up in the same home.
Still, knowing the general communication milestones can help parents understand what skills typically develop at different ages and recognize when it may be helpful to ask for additional support.
The milestones below are based on developmental information from the American Speech-Language-Hearing Association (ASHA). They are meant to serve as general guidance, not a checklist that every child must complete on the exact same schedule.
Birth to 3 Months
Communication begins long before your baby says their first word.
During the first few months, babies are already learning to recognize voices, respond to sounds, and participate in early back-and-forth interactions.
You may notice your baby:
Becoming alert when they hear sounds
Quieting or smiling when you talk to them
Turning toward familiar voices
Beginning to recognize familiar people and objects
Making different sounds when they are happy, uncomfortable, or upset
Cooing with sounds such as “ooo,” “ahh,” and “mmm”
Making sounds in response to you
Those little coos and noises may not sound like communication yet, but they are some of your baby's earliest attempts at having a conversation.
Twin Parent Perspective
Don't be surprised if your twins aren't equally vocal.
One baby may happily coo through an entire diaper change while the other quietly watches your face. Look at each baby's overall communication development rather than expecting their skills or personalities to look identical.
4 to 6 Months
During these months, babies often become much more social and playful with their voices.
You may notice your baby:
Laughing and giggling
Responding to your facial expressions
Watching interesting objects and following them with their eyes
Reacting to toys that make sounds
Making sounds while playing
Experimenting with different vowel sounds
Combining vowels and consonants
Blowing raspberries and experimenting with their mouth and lips
This is a wonderful time to imitate your baby's sounds. When they make a noise, make it back and give them a moment to respond.
Those simple exchanges help teach one of the most important parts of communication: taking turns.
7 to 9 Months
Babbling usually becomes much more noticeable during this stage.
Instead of individual noises, you may begin hearing longer strings of sounds such as “mamamama,” “babababa,” or “dadadada.”
Your baby may also begin to:
Look toward you when you call their name
Pause briefly when they hear “no”
Raise their arms to be picked up
Look for familiar people when upset
Recognize the names of familiar people or objects
Push away something they don't want
Use longer strings of sounds during play and interaction
Communication is becoming much more intentional now.
Your baby isn't simply making sounds. They are beginning to understand that their sounds, movements, and expressions can affect the people around them.
10 to 12 Months
Toward the end of the first year, gestures become an increasingly important part of communication.
Your baby may begin to:
Reach for things they want
Point
Wave
Show or give you objects
Copy gestures and sounds
Participate in social games such as peek-a-boo
Blow kisses
Respond to familiar phrases
Dance or move in response to music
Say one or two early words such as “mama,” “dada,” “hi,” or “bye”
Gestures matter.
Pointing at a toy, raising their arms to be picked up, or bringing you an object to show you are all meaningful forms of communication.
13 to 18 Months
During the second year, children often begin understanding much more language than they can actually say.
Your child may:
Look for an object when you ask where it is
Follow simple directions
Point to request something
Point to show you something interesting
Shake their head “no” or nod “yes”
Understand words for familiar people, objects, and actions
Identify some body parts
Use gestures such as clapping or giving a high-five
Mix babbling, syllables, and real words together
You may also notice your child using their voice with speech-like rhythm and expression, even when you cannot understand all the words.
19 to 24 Months
This can be a period of tremendous language growth.
Many children begin adding new words quickly and combining words to communicate more complicated ideas.
You may notice your toddler:
Understanding and using an increasing number of words
Naming familiar foods, toys, animals, people, and body parts
Combining two or more words
Following simple two-step directions
Using words such as “me,” “mine,” and “you”
Asking for help with words
Beginning to use possessive phrases such as “Daddy's shoe”
Their pronunciation will not necessarily be perfect.
A toddler may say a shortened or simplified version of a word while still clearly understanding what the word means.
2 to 3 Years
Between ages 2 and 3, communication often starts sounding much more like conversation.
Your child may:
Frequently combine words
Say their own name
Ask “why” and “how”
Try to get your attention with words
Begin using plural words
Use action words ending in “-ing”
Begin talking about things that already happened
Give simple explanations or reasons
Answer basic questions
Produce more speech sounds correctly
Speech should gradually become easier to understand, although unfamiliar listeners may still have difficulty understanding everything your child says.
3 to 4 Years
Preschoolers are learning how to use language for much more than requesting things.
They may begin telling stories, describing experiences, asking endless questions, and experimenting with early reading and writing skills.
Your child may:
Compare things using words such as “bigger” or “shorter”
Retell parts of a familiar story
Understand location words such as “inside,” “on,” and “under”
Use increasingly complete sentences
Pretend to read
Recognize familiar signs and logos
Pretend to write or spell
Write some letters
Speak more smoothly
Become understandable to most listeners most of the time
Some speech sounds are still developing at this age, so you may continue hearing errors with more difficult sounds.
4 to 5 Years
By ages 4 to 5, children's language is becoming increasingly sophisticated.
Your child may:
Speak using longer and more grammatically complete sentences
Tell stories with characters and events
Connect ideas using words such as “and”
Understand words describing location
Use words describing time, such as “yesterday” and “tomorrow”
Follow directions and rules during games
Recognize and name letters
Write their own name or attempt to
Recognize rhyming words
Combine parts of words
Produce most consonant sounds correctly
Speak clearly enough to be understood during conversation
Language development continues well beyond age 5, but these early years establish an important foundation for communication, relationships, learning, and literacy.
What If My Twins Aren't Reaching Milestones at the Same Time?
This is one of the most common concerns I hear from twin parents.
Your twins are two individual children.
Sharing a birthday, pregnancy, home, and parents does not mean they will develop every skill simultaneously.
One twin may speak first while the other develops motor skills earlier. One may be naturally outgoing and constantly trying to communicate while the other is quieter and more observant.
Small differences do not automatically mean something is wrong.
However, there is a difference between two children developing at slightly different rates and one child consistently struggling with communication skills expected for their age.
If you notice a significant difference between your twins, don't feel guilty for noticing it.
You aren't comparing them to determine which child is “better” or “ahead.” You are observing their development.
That information can be helpful.
When Should You Ask for Help?
Milestones provide a general picture of development, but they are not diagnostic tools.
Consider discussing your concerns with your child's pediatrician or a speech-language pathologist if your child is missing several communication milestones within their age range, loses skills they previously had, or you simply feel something about their communication development needs a closer look.
You do not need to wait until you are certain something is wrong before asking questions.
A speech-language pathologist can evaluate how your child understands language, communicates their wants and needs, produces speech sounds, interacts socially, and uses communication during everyday activities.
Sometimes an evaluation provides reassurance.
Sometimes it identifies an area where additional support may help.
Either way, having more information can help you better understand your child.
A Final Reminder for Twin Parents
Development isn't a race, and twins don't have to cross every developmental finish line together.
Watch each child.
Talk to them.
Read together.
Sing songs.
Imitate their sounds.
Respond when they try to communicate with you.
Give them opportunities to communicate individually, too.
And when something doesn't feel right, ask.
Early communication is about much more than how many words a child can say. It's about helping children connect with the people around them and giving them the tools they need to express themselves.
Source
Developmental milestone information adapted from the American Speech-Language-Hearing Association's developmental milestone resources.
