Speech Development Milestones Checklist
As soon as a baby’s hearing develops in the womb (around 7 months) they will start to distinguish the sounds of their native language from other languages and give preference to their mother’s voice. Babies are born with a “bias for listening to speech” versus non linguistic sounds.
Language acquisition is an innate ability just like a cat’s eyesight or a bird’s ability to fly [1–3]. But your little bird may be struggling to take off.
We created this document to:
- Help you understand the first phases of speech development,
- Show you that behaviors you see today may actually be signs of developing speech.
Your person may be more advanced than you think.
If he/she has been struggling to take off for years, our experience with brain plasticity and sensory enrichment is that anything is possible, even with adults.
Communication begins with emotion
Linguists usually say that the process of producing speech looks like this:
Idea -> Plan -> Utterance 
However, we believe something else comes first, even before you have an idea you need to express: Empathy.
Someone has to be listening or why bother getting outside of your own head? An emotional connection and understanding come first. And so we propose that the process of communicating looks like this:
Empathy -> Idea -> Plan -> Utterance
The wrench in the mix is that individuals with autism display different empathy levels than their typically developing peers.
Some believe that they feel and display lower levels of empathy.
We subscribe to another theory.
We believe they feel and display much higher levels of empathy. Their struggle may be instead to identify their feelings and to communicate them to us.  Whichever theory is closest to the truth, could it be that this emotional key is one of the missing pieces in a nonverbal person’s path to speech?
Your preliminary score
Before you look at the following checklist, how would you score the language development of your family member?
After reading through this document, please return to your preliminary score and see if you feel like your initial assessment should be updated.
Where is your nonverbal child on this speech development scale?
- Eye contact and Smiling back
- Blowing saliva bubbles and spitting
- Putting their hands and other things into their mouth
- Making sounds and Vocalizing
- Imitating your sounds
- “Mama, Dada”
- First 10 words
- Formulating sentences
- Real conversations
First words and first steps are celebrated, but each of the milestones listed here represents leaps and bounds toward speech and a new degree of connection within the brain itself.
1. Eye contact and smiling back
Birth to 4 months in a typical infant
The first step on the way to verbal communication begins with emotional connections.
As early as their second day of life most neurotypical infants prefer to look at a face with open eyes rather than one with closed eyes. 
Two-month-old infants focus their gaze on the mouth of the person looking over the crib. At this very early age, they are able to recognize if a person is speaking to them in their mother tongue or a foreigh language. That first smile and first acknowledgement of language are the first communication of love and acknowledgement between parent and child [7,8].
As that infant reciprocates, they demonstrate their own feeling of belonging, safety, and happiness. These babies are aware of and will attempt to imitate their parents’ facial expressions, gaze, and even eyebrow movement. This silent exchange is the first step in bonding and communication.
Emotional Connection Delay?
The limited eye contact with children with autism can sometimes be ignored, but the absence of this shared smile is a secret pain for many parents. Don’t give up hope, and never give up trying!
Caregiver responsiveness, that is, how warm, sensitive, and responsive you are towards your child, is essential in encouraging your child’s desire and ability to maintain this kind of joint attention or shared emotion .
2. Blowing saliva bubbles and spitting
Birth to 5 months in a typical infant
Shortly after this first step a typically developing baby will “blow raspberries.” This is like a warm-up exercise for the structures involved with speech production:
- Breath control,
- Saliva production,
- Fine motor control of the lips, tongue, and cheeks. 
This type of intentional vocal play is the footwork drill to the first word’s game day.
Stuck playing with saliva?
Individuals stuck at this level may spit a lot.
We had a client who spat in the direction of the sun to observe the mini-rainbows he created. Another one of our clients had tons of fun spitting in the mirror and smearing it on the mirror. It was great entertainment for him.
Typically they don’t vocalize at this level. They often seem unaware of what is going on around them, even when they are not playing with their bubbles.
Recognize that what they are doing is a clue of their speech development level. Try not to be bothered by the appearance of their games. The good thing is that they have developed a sense of control of their environment and of how to interact with it, and it is fun for them. Don’t take away from them the little they have if you can.
Incorporate new dimensions
Helping a person move from “blowing saliva bubbles” to “mouthing” is best done by accelerating brain development through enrichment, but something that could help you is to adding a new dimension to their spitting play.
For example you could play some dance music while your family member spits and smears on the mirror. Adding auditory processing can help broaden their capacity and interests, starting from a place where they are comfortable.
Because it is done during an engaging and pleasurable activity, it can promote the creation of new connections. Again, this is better done in the context of enrichment program.
Facial expressions in the mirror
Another dimension you can add to their spitting play could be social play. We speak in more detail about imitating sounds and imitating facial expressions in a later section. Essentially, you make faces in the mirror to each other.
3. Putting their hands and other things into their mouth
Age 3 to 5 months in a typical infant
As the brain organizes hand-eye coordination, your little or big person will start to put fingers or entire hand in their mouth. Their mouth will become for a while their prefered place to “touch and feel” things since this is a familiar place for them to do that. 
By the way, babies are usually getting ready for solid foods at this point and very soon they will be experimenting with chewing as well. Learning to chew and swallow is fine motor development that will be useful when learning to pronounce words.
As your family member discovers new textures and shapes, he or she will build new abilities essential for speech development. It’s important to encourage this intentional play and discovery as they connect to the world around them; it’s like yoga for neurons.
Is your family member still mouthing?
As with the previous speech developmental milestones, even if they appear “stuck” it’s important not to discourage them from mouthing. They need to build on that skill to the next developmental step.
As with blowing saliva bubbles, we can help them move on, by adding a new dimension to their favoured activity.
Experiment with flavors, textures and temperatures
What you can do is offer food sticks for them to explore with their mouth if they are interested.
For our picky eaters that may not be interested in objects that look like food, try licorice. It doesn’t look like food. It looks like a twig but it releases a novel and unexpected natural flavor. Vanilla beans could also work.
Consider also dipping his favorite toy in something interesting or storing it in the freezer for a cold sensation.
Another very good way to help them progress to the next language development step from the mouthing stage is to play with their hands.
Games like the ones that have lots of small buttons and different noises can help to continue develop hand eye coordination and individualization of fingers.
You can give him or her an old cell phone or an old remote that have small buttons that give more texture and require more pressing than a tablet. If your family member plays with tablets, look for tracing activities and games that require fine dexterity.
A popular Sensory Enrichment Therapy protocol is “Find the Marble in Ice Cubes.” If your person is fully grown, it may be more appropriate to use a large and heavy object and large ice cubes.
Another popular protocol is “Finger Gym,” which is essentially a finger tug-o-war game that you can play with buttons, thread or anything that your family member would have fun trying to grab from you using his or her pincers.
Age 5 to 6 months in a typical infant
The next crucial step of speech development can be unpleasant, especially when it arrives later, in a full grown body. At this stage, the person needs to improve mandibular control and jaw strength for chewing and to produce certain sounds.
Biting experimentation typically goes along with the capacity to chew solid foods for typically developing babies. It is also the stage at which these babies start to vocalize.
Worried about chewing and biting?
Again, as this is a developmental step for language development, refrain from scolding your family member for biting and chewing on things, unless of course it is illegal, immoral or dangerous.
It may be temporarily useful to redirect the biting to chewing on a chew toy or on healthy snack, such as dried fruit, fresh fruit, nuts.
A note here about chew toys. Using chew toys rather than food items may reinforce chewing as a coping mechanism for anxiety. Have you ever found yourself chewing on your pen when trying to figure out a problem at work or at home? If biting is an anxiety release, then what you need to do is look for the trigger, the source of stress and solve the problem there. At Mendability we have methods of increasing resilience against anxiety and stress, and so we don’t have to use chew toys.
How to help your person move on to the next level of speech development?
Our recommendations for this “Biting” stage are the same as the ones we made for the “Mouthing” stage:
- Explore flavors, textures and temperatures
- Explore fine motor play
5. Making sounds and vocalizing
Age 5 to 6 months in a typical infant
This stage of language development generally happens around the same time as the mouthing and biting stages in typically developing babies. [12,13]
They are becoming familiar with their own voice and they are starting to imitate their parents who tend to make a lot of cute sounds too when they talk to them.
When the person is older, rather than coo-ing sounds or other condescending language, consider using grammatically correct sentences. We discuss this in more detail in later sections of this article.
Read to them to promote language development
The best way to help them move on to the next language development step is to read stories to your person. Use this moment to expose them to a range of inflections, tones, sounds and even vocabulary. You would be surprised how much they actually understand, even at a very young age.
As they listen to you read with expression in a relaxed and comforting context they will learn to associate your voice and the act of speaking with pleasure, which is especially important if you are working with a grown child or adult who is usually only talked to in a pressured context, when someone needs something from them.
A word on loud voices around speech delayed children
Have you noticed that family or therapists, and maybe even yourself, get louder around your family member? Remember that they are not deaf. It reminds me of something funny that I have seen my mother-in-law do when she travels to foreign speaking countries. I think she believes that if she speaks English louder it will help them understand her better.
You must be aware that children on the autism spectrum often have sensory processing issues that make them particularly sensitive to noise. [14–16] They may not always cover their ears, but they may still hear more than you do. For example, it is not uncommon for them to have perfect pitch. Also, the louder you speak, the less you modulate your tone, which makes your conversation lose meaning. All this to say that if there is someone in your family who would appreciate whispering the most it is probably the one who speaks the least.
Does your family member shout too?
The first reason he or she may be screaming we would like to explore is that they may be protesting. They may also be vocalizing a want, need or even pain. Do they want to go play outside? Is it an ear infection? Is she hungry?
One of our clients screamed every time at the exact same spot on the ride home from school. One day they decided to stop there and see what could be upsetting about this spot. Could it be a store he wanted to visit? A photo in a window? When mom stopped the car and stepped out it became obvious what it was. There was a building producing a high pitch hiss from an exhaust vent and it was really loud. Their son could hear it and was bothered by it, even over the general ambient noise. They have a new route since then.
Another reason for the screaming might be that your family member is experimenting with their voice and, if you have been loud too, they may be thinking that this is how people are supposed to speak.
When a baby is thus experimenting, it’s cute. When a 200-pound 15-year-old is screaming and has been for the past 12 years, it is exhausting and it doesn’t prompt the praise and play that would encourage a baby to develop that skill further.
So, what do you do when the only thing you feel like doing is to shout back?
Drown out noise?
Sometimes, the environment is so loud it feels better to hear your own voice than all of the hums, voices, clicks, vrooms, wooshes, buzzes, hisses, bangs, etc.
Dr. Temple Grandin explained, referring to her own childhood experiences, that stimming “may counteract an overwhelming sensory environment, or alleviate the high levels of internal anxiety these kids typically feel every day.” 
The Mighty asked autistic adults why they stim. Here is what Kristy had to say: “Get them out of the situation. Don’t yell over them or get upset or angry. Remember, we are overwhelmed by the environment. Don’t be overwhelming yourself. Listen to your child. Respect their space and body. Don’t go touching or forcing them to talk or something.” 
If drowning out the noise is their objective, try giving them noise cancelling headphones. It may decrease the volume of their vocalizing.
Finally, maybe screaming is just fun for him or her.
Maybe they like the buzz in the back of the jaw.
Maybe they think they are singing a beautiful tune.
END OF PART 1
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