Speech Sound Norms: Taken from the Goldman-Fristoe Test of Articulation-2.
AGE INITIAL SOUND MEDIAL SOUND FINAL SOUND ____________________________________________________________________________________ 2 years /b/, /d/, /h/ /b/, /m/, /n/ /m/, /p/ /n/, /m/, /p/ ____________________________________________________________________________________ 3 years /f/, /g/, /k/ /f/, /g/, /k/ /b/, /d/, /g/ /t/, /w/ /ng/, /p/, /t/ /k/, /n/, /t/ _____________________________________________________________________________________ 4 years /kw/ /d/ /f/
_____________________________________________________________________________________ 5 years /ch/, /j/, /l/ /ch/, /j/, /l/ /l/, /ng/, /ch/ /s/, /sh/, /y/ /s/, /sh/, /z/ /j/, /s/, /sh/ /bl/ /r/, /v/, /z/ ______________________________________________________________________________________ 6 years /r/, /v/, /br/ /r/, /v/ /dr/, /fl/, /fr/ /gl/, /gr/, /kl/ /kr/, /pl/, /st/ /tr/ ______________________________________________________________________________________ 7 years /z/, /sl/, /sp/ /th/ /th/ /sw/, /th/ ______________________________________________________________________________________ This table is the age at which 85% of the Goldman-Fristoe Test of Articulation-2 (2000) Standardization sample correctly produced the consonant and consonant cluster sounds.
