Speech Developmental Norms

Articulation Developmental Norms

Based on national and local normative data, children should correctly produce the following sounds within the age range indicated:

Ages 3-4 years: /m/; /b/; /n/; /t/; /p/; /f/; /d/; /k/; /g/; /w/; /h/ and vowels

Ages 5-6 years: /sh/; /ch/; /l/; /l/ and /s/ blends

Phonological Processes

Phonological processes are patterns of sound errors that typically developing children use to simplify speech as they are learning to talk. A phonological disorder occurs when phonological processes persist beyond the age when most typically developing children have stopped using them or when the processes used are much different than what would be expected.