Childhood apraxia of speech (CAS) is a tricky speech disorder. It’s tricky to explain and also tricky to treat. So if you’re hearing about it for the first time and you’re confused, there is good reason.
Definition
Childhood apraxia, sometimes called dyspraxia, is a developmental disorder that results in speech that is extremely difficult to understand. The very basic explanation is that there is a breakdown between what a person wants to say and the motor planning and execution of the plan. A child with apraxia knows what they want to say, but when attempting to say the message, there is a breakdown making their speech unclear. It is estimated that 1 in 1000 or .1 percent of children exhibit childhood apraxia of speech (Shriberg et al, 2019).
Apraxia can be somewhat confounding. Often, when a child is learning to talk, they change words to make them easier to say. For example, a child may say “tar” for “car.” The “t” sound is typically easier to say, so the child’s little developing system replaces the /k/ sound with a /t/ sound. The sounds are similar, but the /t/ is a little easier to produce. (For more information on speech and language development, check out the GLP post here) A child with apraxia on the other hand will often use a more motorically difficult replacement. This often makes the word harder to say and more difficult to understand. They can generally produce shorter words more easily than longer words.
In addition, children whose speech is influenced by apraxia are not consistent in their productions of certain words. For example, a child may say “Dada” one day and “Gaga” another. Their system is mixed up and often therapy includes many repetitions of target words to strengthen the pathways used to link sounds together.
Signs of CAS
- Inconsistent errors when repeating a word or phrase
- A child saying “Dada” multiple times may say something like: Dada, Gaga, gadee. Saying a word in an inconsistent way is unusual and a sign of CAS
- Disrupted prosody or an unusual rhythm to their speech
- A child with CAS may emphasize the wrong part of a word or phrase, such as “polk-A-dot” instead of “POLK-a-dot”
- Have a slower rate of speech or seem to struggle to form the words (“groping”)
- A child with CAS has trouble forming the speech sounds and linking them together, so they may actually appear to be searching for the right motor movements
- Vowel errors or consonant distortions
- A child who has difficulty with vowel sounds, e.g., “eeple” for “apple,” or makes unusual replacements for consonant sounds, such as producing a [k] sound for a /sh/ sound as in “kine” for “shine”
- Longer words are less clear
- This can be true for many early speakers, but a child with CAS will often have trouble with sounds they can say in shorter words, such as the /b/ sound in “baby” may be distorted in “banana.”
- In severe cases, difficulty saying any sounds at all

If you think your child is showing some signs of verbal apraxia, please don’t wait to get support. A speech language pathologist can help. Children making unusual replacements or errors not typically seen in development rarely “grow out” of these patterns without support. Speech therapy’s goal is to make communication easier and more productive for your child.
Citations:
asha.com, Childhood Apraxia of Speech
Shriberg LD, Kwiatkowski J, Mabie HL. Estimates of the prevalence of motor speech disorders in children with idiopathic speech delay. Clin Linguist Phon. 2019;33(8):679-706. doi: 10.1080/02699206.2019.1595731. Epub 2019 Apr 15. Erratum in: Clin Linguist Phon. 2019;33(8):815-816. doi: 10.1080/02699206.2019.1616869. PMID: 30987467; PMCID: PMC6633906.


