Page 119 - Difference or Disorder Digital Version

Difference or Disorder?

Appendix B: English

Developmental Charts

DEVELOPMENTAL NORMS FOR SPEECH

Age Sounds
3 /m, n, p, b, w, h/
3.5 / k , d , f /
4 /g, t/
5 / y, blends/
5.5 /v/
6 /l/
7 /ʧ, ʃ, j, ð, ʤ/
8 /ŋ, ɺ, s, z, θ, ʒ /

DEVELOPMENTAL NORMS FOR PHONOLOGICAL PROCESSES

Age of Suppression Phonological process
3 Pre‐vocalic voicing, Word‐final consonant devoicing
4 Final consonant deletion, Fronting, Consonant harmony, Weak
syllable deletion, Cluster reduction
5 Stopping, Gliding
7 Vocalization

DEVELOPMENTAL NORMS FOR LANGUAGE

Birth to 5 months
Reacts to loud noises Birth to 3 months
Vocalizes discomfort, pleasure 4‐6 months
Moves eyes toward direction of sound 4‐5 months

6 to 12 months
Understands "no" 6‐11 months

Babbles ("ma‐ma‐ma") 6‐11 months
107
Uses gestures 7‐12 months
Recognizes familiar objects when named 7‐12 months
Says 1‐2 words 12 months

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