Sequences/Phases of Speech Sound Acquisition

Question 1

Phase 1 of Speech Sound Acquisition

Answer 1

Laying foundations for speech (birth to 1 yr)

Question 2

What does Phase 1 of Speech Sound Acquisition include?

Answer 2

1. Development of structure and function of the oral mechanism
2. Infant perception —> visual perception, auditory perception
3. Infant production —> babbling, etc.

Question 3

Phase 2 of Speech Sound Acquisition

Answer 3

Transitioning from words to speech (1 to 2 yrs)

Question 4

What does Phase 2 of Speech Sound Acquisition include?

Answer 4

1. Children’s first words
2. Young Children’s consonant inventories
3. Phonological knowledge & vocab acquisition

Question 5

Phase 3 of Speech Sound Acquisition

Answer 5

Inventory growth (2-5)

Question 6

What does Phase 3 of Speech Sound Acquisition include?

Answer 6

1. Intelligibility
2. Age of Acquisition of Speech Sounds
3. Percentage of Sounds Correct / Percentage of Sounds in errors
4. Vowels
5. Phonological patterns/processes

Question 7

Phase 4 of Speech Sound Acquisition

Answer 7

Mastery of Literacy (+5)

Question 8

What does Phase 4 of Speech Sound Acquisition include?

Answer 8

1. Phonological Awareness

Question 9

Intelligibility by 2yrs

Answer 9

50%

Question 10

Intelligibility by 3yrs

Answer 10

75%

Question 11

Intelligibility by 4-5yrs

Answer 11

100%

Question 12

What speech sounds are roughly acquired by 3 years of age?

Answer 12

b, p, m, n, h, w

Question 13

All consonants and vowels should be acquired by what age?

Answer 13

8 yrs

Question 14

What speech sounds are roughly acquired by 4 years of age?

Answer 14

k, g, d, t, eng, f, y

Question 15

What speech sounds are roughly acquired by 6 years of age?

Answer 15

l

Question 16

What speech sounds are roughly acquired by 7 years of age?

Answer 16

ch, sh, j, r, th (voiceless interdental fricative)

Question 17

What speech sounds are roughly acquired by 8 years of age?

Answer 17

th (voiced interdental fricative), v, s, z, zh (voiced palatal fricative)

Question 18

Early 8

Answer 18

/m, n, b, p, j, w, h, d/ emerges around 1-3 yrs, consistent around 2.5 yrs

Question 19

Middle 8

Answer 19

/t, k, g, f, v, ŋ, d͡ʒ, t͡ʃ/ emerges around 3-6.5 yrs, consistent around 5.5 yrs

Question 20

Late

Answer 20

/r, l, ʒ, s, z, ð, ʃ, θ/ emerges around 5-7.5 yrs, consistent around 7.5 yrs

Question 21

PCC (Percent Consonant Correct) around age 2

Answer 21

70%

Question 22

PCC (Percent Consonant Correct) around age 3

Answer 22

80%

Question 23

PCC (Percent Consonant Correct) around age 4

Answer 23

90%

Question 24

PCC (Percent Consonant Correct) around age 5

Answer 24

93%

Question 25

PCC (Percent Consonant Correct) around age 7

Answer 25

98%

Question 26

Vowel Acquisition?

Answer 26

Nonrhotic vowels are typically acquired by age 3, but some rhotic vowels may be acquired by later ages…

Question 27

Paradigmatic aspect of mastering vowel production

Answer 27

ability to produce vowels in isolation or in monosyllabic words (mastered by 3 yrs)

Question 28

Syntagmatic aspect of mastering vowel production

Answer 28

ability to produce sequences of vowels in syllables or in words in conjunction with other phonological errors (e.g., stress) mastered by age 3-5 (for example vowels in unstressed syllables by age 3, vowels in stressed syllables in age 4-5).