According to Hustad et al. children should be 50% intelligible by 4 years, 75% intelligible by 5 years, and 90% intelligible a little past 7 years of age.
"When can we expect intelligibility to improve the fastest?" The answer is between around 30 to 41 months (i.e. from around 2.6 to around 3.5), with less intelligible children tending to experience this "accelerated period" later than more intelligible children.
Your child may substitute one sound for another, leave sounds out, add sounds, or change a sound. It can be hard for others to understand him.
It is normal for young children to say the wrong sounds sometimes. For example, your child may make a "w" sound for an "r" and say "wabbit" for "rabbit." She may leave sounds out of words, such as "nana" for "banana." This is okay when she is young. It may be a problem if she keeps making these mistakes as she gets older.
Your child may also sound different because you have an accent or dialect. This is not a speech sound disorder.
This chart shows the ages when most English-speaking children develop sounds. Children learning more than one language may develop some sounds earlier or later.
McLeod, S., & Crowe, T. (2018)
Phonological processes are patterns of sound errors that typically developing children use to simplify speech as they are learning to talk. They do this because they don't have the ability to coordinate the lips, tongue, teeth, palate and jaw for clear speech.
Not all errors in speech are due to articulation. Sound errors can follow a pattern called a phonological process - a simplification of adult speech. All children use these processes while their speech and language develops. Young children use these simplified patterns as they learn to produce their sounds. Examples include "wa-wa" for "water", "tat" for "cat" "do" for "dog" or "ha" for "hat." Up to three years of age, these patterns are appropriate.
As children mature, so do their speech sounds and they stop using these patterns to simplify words. In fact, by age 5, most children stop using all phonological processes and their speech sounds more like the adults around them. As children stop using phonological processes, their speech becomes more understandable. This allows them to become better communicators.
Many times children do not hear the differences in the words and will say one word to mean three different ones. For example, children who continue to delete the initial consonant from a word may say “all” to mean each of these words: fall, ball, wall. This can cause frustration for the child and their communication partner, as there can be difficulty with understanding.
Children may say some sounds the wrong way as they learn to talk. They learn some sounds earlier, like p, m, or w. Other sounds take longer to learn, like z, v, or th. Most children can say almost all speech sounds correctly by 4 years old. A child who does not say sounds by the expected ages may have a speech sound disorder. You may hear the terms "articulation disorder" and "phonological disorder" to describe speech sound disorders like this.
Many children learn to say speech sounds over time, but some do not. You may not know why your child has problems speaking.
Some children have speech problems because the brain has trouble sending messages to the speech muscles telling them how and when to move. This is called apraxia. Childhood apraxia of speech is not common but will cause speech problems.
Some children have speech problems because the muscles needed to make speech sounds are weak. This is called dysarthria.
Your child may have speech problems if he has
a developmental disorder, like autism;
a genetic syndrome, like Down syndrome;
hearing loss, from ear infections or other causes; or
brain damage, like cerebral palsy or a head injury.
As a speech-language pathologist (SLP), I can assess your child's speech. During the evaluation, I will listen to your child to hear how he says sounds. I also will look at how your child moves his lips, jaw, and tongue. I will also assess your child’s language skills. Many children with speech sound disorders also have language disorders. For example, your child may have trouble understanding concepts (in, on, next to) or telling stories.
It is important to have your child’s hearing checked to make sure he does not have a hearing loss. A child with a hearing loss may have more trouble learning to talk.
I can also help decide if your child has a speech delay or speaks with an accent. An accent is the unique way that groups of people sound. Accents are NOT a speech or language disorder.
As an SLP, I can help your child say sounds correctly and clearly. Treatment may include the following:
Learning the correct way to move the articulators to produce sounds correctly
Learning to tell when sounds are right or wrong
Practicing sounds in different words
Practicing sounds in longer sentences
by Harriett Hoeprich, Speech/Language Specialist
Be a practice partner.
Ask your child's speech/language therapist to let you know when it would be helpful for you to practice at home. Then practice your child's successful words, using word cards or objects, at home. Use games and other fun activities, and make your sessions short and frequent. (5-15 minutes a day)
Don't directly correct sounds that your child has not worked on yet.
Direct correction has been shown to be largely ineffective and disruptive. This is especially true when the child has not had the opportunity to have the new skill presented in a more isolated way than connected speech. At some point, your therapist will let you know if your child is at the stage where gentle reminders may be effective during connected speech for the targeted sound. This is usually after mastery has been achieved at the single word level, however.
Use revision every day to address the articulation needs as a whole.
Parents don't realize how powerful this can be, particularly if the revision is used consistently and simply. Revision is the technique where you repeat what the child has said, but use the correct pronunciation. You may want to give the sound a little extra emphasis. (Example--Child: Look at bu! Adult: Look at that bug! Go, bug, go!)
Don't directly imitate your child's errors. Model good speech.
Some of the cute things our children say are very precious to us. But don't inadvertently reinforce the incorrect productions by laughing or drawing attention. Certainly don't imitate the incorrect production. Repeat the utterance using the correct pronunciation. And make a tape or video recording to save your memories of some of the adorable things your child says at this age! Model good speech.
Address health issues that may contribute to the problem.
Fight ear infections. Address other physical difficulties that may contribute, such as mouth breathing or voice difficulties.
Read to your child.
It's amazing how much this accomplishes. Use reading as a way to surround your child with the targeted sound. (See "Ideas for Books to Enhance Articulation Skills".)
Play with your child.
Spend time talking with your child in play, while you model the correct productions very simply, using revision.
Talk to your child.
Talk to your child as you go through your daily routine. This is a chance to model many correct productions, use revision, and stimulate language development, too.
Below are some fun ideas of games and activities you can use to practice your child's sounds. Many of these games involve the use of simple picture cards which can be made out of index cards and catalogs.
Use the picture cards to play Concentration (Memory) or Go Fish.
Play a board game like Candyland, but have your child say a word before he takes a turn each time. Don't forget to take a word yourself! Then it's one more model your child gets to hear. When your child is ready for this step, let your child "catch" you making the sound "the old way" and let him show you how it should be said with the "new sound".
If your child isn't quite ready to enjoy traditional board games like Candyland, use something like Hi-Ho Cherrio, which is a simpler type of game. Use the picture cards in the same manner, however.
Play more active types of games, such as Nerf Golf, Bean Bag Toss, Ring Toss, and Bowling by simplifying the game to include less movement. This works really well with the minimal pairs. Put out two bowling pins with a picture card of the pair against each one (pin-bin, for example). Then try several approaches: Have your child tell you which one he knocked over, or which one he will knock over. Then gently tell him: "You said you were going to knock over the picture of 'pin'. You knocked over 'bin'."
Hide the picture cards and let your child "find" them. You can also hide the pictures in other containers, such as plastic eggs.
Here’s a list of book ideas organized by speech sounds to help enhance articulation skills during therapy or at home. These books incorporate repetitive sound patterns or themes featuring target sounds, making them ideal for articulation practice.
Brown Bear, Brown Bear, What Do You See? by Bill Martin Jr.
Baby Beluga by Raffi
Biscuit series by Alyssa Satin Capucilli
Panda Bear, Panda Bear, What Do You See? by Bill Martin Jr.
If You Give a Pig a Pancake by Laura Numeroff
Llama Llama Red Pajama by Anna Dewdney
Goodnight Moon by Margaret Wise Brown
If You Give a Moose a Muffin by Laura Numeroff
Moo, Baa, La La La! by Sandra Boynton
The Very Hungry Caterpillar by Eric Carle
Ten Little Ladybugs by Melanie Gerth
The Tale of Peter Rabbit by Beatrix Potter
Are You My Mother? by P.D. Eastman
Dear Zoo by Rod Campbell
Duck on a Bike by David Shannon
Good Night, Gorilla by Peggy Rathmann
Click, Clack, Moo: Cows That Type by Doreen Cronin
Go, Dog, Go! by P.D. Eastman
Five Little Monkeys Jumping on the Bed by Eileen Christelow
Fly Guy series by Tedd Arnold
Frog and Toad Are Friends by Arnold Lobel
The Snowy Day by Ezra Jack Keats
Silly Sally by Audrey Wood
The Very Busy Spider by Eric Carle
Sheep in a Jeep by Nancy Shaw
Shark in the Park by Nick Sharratt
A Big Mooncake for Little Star by Grace Lin
Chicka Chicka Boom Boom by Bill Martin Jr.
Charlie and the Chocolate Factory by Roald Dahl (for older readers)
Chicken Little by Rebecca Emberley
Runaway Bunny by Margaret Wise Brown
Rainbow Fish by Marcus Pfister
Room on the Broom by Julia Donaldson
Llama Llama Mad at Mama by Anna Dewdney
The Little Engine That Could by Watty Piper
Leo the Late Bloomer by Robert Kraus
The Cat in the Hat by Dr. Seuss
Thank You, Omu! by Oge Mora
There's a Wocket in My Pocket! by Dr. Seuss
Put Me in the Zoo by Robert Lopshire
Zoom! by Robert Munsch
Zach's Alligator by Shirley Mozelle
Olivia by Ian Falconer
Victor Vito and Freddie Vasco by Laurie Berkner
Vera Viper’s Valentine by Maxwell Higgins
These books not only engage children with their stories and illustrations but also provide natural opportunities to practice articulation in a fun and interactive way.
Childhood apraxia of speech (CAS) is a motor speech disorder that makes it difficult for children to speak. Children with the diagnosis of apraxia of speech generally have a good understanding of language and know what they want to say. However, they have difficulty learning or carrying out the complex sequenced movements that are necessary for intelligible speech.