If you’re wondering when kids usually get certain sounds or certain language concepts, here are some resources for you to explore.

Language Development Milestones – This takes you to the Caroline Bowen website where she outlines Expressive and Receptive language milestones for kids ages 0-5.

The American Speech-Language-Hearing Association lists milestones by age as well as suggestions for parents/caregivers to help their children develop good language skills at each age.  Here are the links to those pages by age:

Birth to One Year

One to Two Years

Two to Three Years

Three to Four Years

Four to Five Years

Intelligibility – This refers to how well other can understand what a child says.  I’ve posted a short version of how intelligible a child should be below, but for more info, click the link.

By 18 months a child’s speech is normally 25% intelligible
By 24 months a child’s speech is normally 50 -75% intelligible
By 36 months a child’s speech is normally 75-100% intelligible

Lynch, Brookshire & Fox (1980), p. 102, cited in Bowen (1998).

First 100 Words Checklist – Here is a PDF of a list you can use to keep track of your child’s words. Vocabulary parent tracking form.docx

Speech Sounds / Articulation – This chart shows the ages at which kids generally master various speech sounds

Phonological Processes – This chart shows the ages at which most kids eliminate various phonological processes.