Developmental Milestones

Question 1

Speech sound acquisiton: phonation

what age

milestones:
demonstrate ?
demonstrates ?

Answer 1

birth - 1 month

reflexive vocalizations such as crying, burping

nonreflexive sounds such as syllabic nasals

Question 2

stage 2: cooing and gooing

age ?

-… productions containing back vowels

and back ?

Answer 2

2-3 months

back vowels

consonant vowel and vowel consonant

consonants

Question 3

Stage 3 exploration/expansion

age ?

gains better control of ? by engaging in
does what ? and produces ?

produces vocalizations that vary
produces vowel swith better

begins ?

Answer 3

4-6 months

laryngeal and articulatory mechanisms /vocal play

squeals, growls, yells, produces, raspberries

vary daily and weekly

oral resonance
marginal babbling with CV and VC syllable sequences

Question 4

Stage 4: Canonical Babbling

age:

continues to use? that have more?

uses some ?

consonant phonetic inventory may have

vowel phonetic inventory have

uses fewer? increases use of ?

Answer 4

7-9 months

Cv syllables / adult-like timing

some reduplicated syllables

stops, glides, nasals

lax vowel s

velars . alveolars and bilabials

Question 5

5 variegated babbling:

age

continues to use

begins ?

produces adult-like ?

most commonly used vowels include

most freq. used consonants include

Answer 5

10-12

CV syllables

variegated babbling

intonation and prosody

/ɛ, ʌ, ɑ, ʊ/

/h, d,
b, m, t, g, s, w, n, k, j, p/