• Speech Developmental Milestones

    Consonant

    Females

    Age

    Males

    Age

    /m/

    3 3
    /n/ 3½ 3
    /h/ 3 3
    /p/ 3 3
    /f/ 3½ 3½
    /w/ 3 3
    /b/ 3 3
    “ng” (as in sing) 7-9 7-9
    “y” (as in “yellow”) 4 5
    /k/ 3½ 3½
    /g/ 3½ 4
    /l/ 6 6
    /d/ 3 3½
    /t/ 4 3½
    /s/ 7-9 7-9
    /r/ 8 8
    “ch” 6 7
    /v/ 5½ 5½
    /z/ 7-9 7-9
    “th” (voiceless as in thin) 6 8
    “sh” (as in shin) 6 7
    “th” (voiced as in the) 4½ 7

     (Mastery guidelines by Smit, et al., 1990)