Speech Sound Development

Ages at which 75% of children would use the speech sounds

3 years:                        p, b, m, n, t, d, k, g, w, y, h, ng,

3y 6m:                         f

4 years:                       l, sh, ch

4y 6m:                         j, s, z

5 years:                        r

6 years:                        v

8 years:                        th

Intelligibility of speech:

This is the amount of speech that can be understood by an unfamiliar listener

 18 months                    25% of speech should be intelligible

 24 months                    50% of speech should be intelligible

 36 months                    75% of speech should be intelligible

 48 months                    100% of speech should be intelligible

 There is some variability between researchers, but the above is a general guide for parents.

If you have any concerns and would like to talk to a speech pathologist, please ring 9968 4075

Source:  www.speech-language –therapy.com (Caroline Bowen website)