Ages DELETIONS 2 Initial Consonant Deletion at/hat, up/cup, ike/bike 3 no/nose, ba/ball, pe/pen Final Consonant Deletion 4 top/stop Consonant Cluster Reduction SUBSTITUTIONS 3 ½ 5 Stopping ton/sun dus/juice – Voicing/Devoicing 3 die/tie crip/crib Gliding 3 6 wef/leaf weed/read – Fronting/Backing 4 5 dum/gum cop/top – Affrication/Deaffrication 5 6 chew/shoe ship/chip – ASSIMILATION 3 4 Progressive beb/bed dod/dog – 3 4 Regressive – lellow/yellow or gog/dog Velar Assimilation 3 beb/bed Labial Assimilation 3 4 – Alveolar Assimilation lellow/yellow dod/dog 4 Nasal Assimilation 3 neon/pencil OTHER (infrequent) 3 4 Vocalization (vowelization) bado/bottle ca/car – tefon/telephone 4 Weak Syllable Deletion asks/ask 7 Transposition (Metathesis) mud/mother 5 Vowel Naturalization op/stop 2 CC Deletion ca/cats 2 Reduplication wawa/water d du/thank you Bennett (11/85: 9/87) Adapted from Hodson (1980); Ingram (1981); Shribert & Kwiakowski (1981); Kahn (1982).
Ages DELETIONS 2 3 4 Initial Consonant Deletion Final Consonant Deletion Consonant Cluster Reduction at/hat, up/cup, ike/bike no/nose, ba/ball, pe/pen top/stop SUBSTITUTIONS 3 ½ – 5 3 3 – 6 4 – 5 5 – 6 Stopping Voicing/Devoicing Gliding Fronting/Backing Affrication/Deaffrication ton/sun dus/juice die/tie crip/crib wef/leaf weed/read dum/gum cop/top chew/shoe ship/chip ASSIMILATION 3 – 4 3 – 4 or 3 3 – 4 4 3 Progressive Regressive Velar Assimilation Labial Assimilation Alveolar Assimilation Nasal Assimilation beb/bed dod/dog lellow/yellow gog/dog beb/bed lellow/yellow dod/dog neon/pencil OTHER (infrequent) 3 – 4 4 7 5 2 2 Vocalization (vowelization) Weak Syllable Deletion Transposition (Metathesis) Vowel Naturalization CC Deletion Reduplication bado/bottle ca/car tefon/telephone asks/ask mud/mother op/stop ca/cats wawa/water d du/thank you Bennett (11/85: 9/87) Adapted from Hodson (1980); Ingram (1981); Shribert & Kwiakowski (1981); Kahn (1982).
se_speech_or_language_impairment_evaluation_guidance.docx