Typical Speech/Articulation Development

Typical Speech/Articulation Development Chart

* Note: this graph should only be used as a guideline for parents

Intelligibility Guidelines

Can you understand what your child is saying?
Does your child speak clearly?
Do you have to translate your child's speech to others?

This is called intelligibility. The term intelligibility refers to how much a listener can understand the speaker. In typical development, as children learn to talk, their comprehensibility to those around them steadily increases.

In young children there is often quite a marked difference between understanding:

Single words vs. conversational speech
Known conversational topics vs. unknown conversational topics

Parents and close family members are usually experts at understanding their own child's speech attempts. We have seen many parents "translate" even the most unintelligible efforts made by their children! With regard to families, siblings may sometimes be more adept than parents in comprehending what their little brothers and sisters are saying! Unfamiliar listeners, on the other hand, are often unable to decipher a young child's speech.

Approximate Age	Percentage of Understood by Parents
18 months	A typical child is 25% intelligible.
2 years	A typical child is 50-70% intelligible.
3 years	A typical child is 80% intelligible.
4 years	A typical child is 90% intelligible.

* It is important to note that this information depicts a general range of development, and should only be used as a guide. If you have any concerns regarding your child’s speech development, we recommend that you contact a pediatrician or speech-language pathologist.