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Prelinguistic Behavior
System changes Respiratory system Phonatory and Resonatory system Perceptual development -
Stage 1: Reflexive and vegetative sounds
Reflexive vocalizations=Anything automatic reflective the physical state. Ex. cries, coughs, grunts
Vegetative sounds=Sounds associated with activity or feeding. Birth-2 mos. -
Stage 2: Cooing and laughter
Cooing and Gooing=Comfortable states 2-4 mos. -
Stage 3: Vocal Play
Prolonged vowel and consonant like sounds while cooing and gooing as well as when they are not in comfort. 4-6 mos. -
Stage 4: Canonical babbling
Canonical babbling=Reduplicated and non redupliacted babbling
Reduplicated=C1V1C1V1C1V1 (mamama)
Nonreduplicated=C1V1C2V2 (mabo)
6+months Open syllables are the most frequently used Quantity and diveristy of babbling predicts langauge skills -
Stage 5: Jargon Stage
Babbled utterances modulated by intonation, rhythm, and pausing (prosodic features). 10+ mos. Falling pitch=most common intonation in the 1st year of life. From babbling to words. Sometimes hard to differentiate between the two. Consistency and Context. -
Linguistic Phase
Begins the moment the first meaningful word is produced. First word=consistently produced and recognizably related to the adult form. 12 mos. -
First Fifty Words Continued
Prosodic features
Pitch differences can indicate different meanings ma^mav vs. mavma^
Syntactical function=Child may hum a tune and get the words later...uh-oh!
p. 131 of text -
The First Fifty Words
First word until about 18 mos. Phonetic variability=unstable productions. Small number of stable productions. Not a large array of syllable structures. Most common=CV, VC, CVC First vowel sounds are typlically /a/(dialectal bot) or bot
First consonant sounds are typically /p/ or /m/
Lots of variability p. 127 of text Salience factor=Children will use words with sounds they have acquired
Avoidance factor=Child's tendency to avoid words with sounds that are not in their repitoire -
The Preschool Child
End of the first fifty word stage (18-24 mos) till 5 years of age Vowels are typically mastered by age 3. Really lacking research in this area...anyone want to get their Ph.D? :) Consonant inventory data is typically collected with articulation test and right/wrong answers. This is problematic. Phonological processes-Easier forms for a child to produce in an attempt to use and organize the phonological system effectively.
There is an age of suppression. -
The Preschool Child Continued
Prosodic Features
Contrastive stress=One syllable in a two-word utterance becomes prominent
Can denote meaning
MOMMY go. (Meaning mom, not dad, should go)
Mommy GO. (Meaning mom, move) -
The School-Age Child
5 years+
Most sounds have been acquired although some will not be articulated correctly. All about refinment. Later-developing sounds (the late 8) and processes (CCR). Strong correlation between phonological development (especially segmentation skills) and later reading achievement. Phonological awareness=Awareness of the sound or phonological structure of a spoken word in contrast to written words.
Phonemic awareness-Phoneme level. Awareness that words are composed of individual sounds. -
The School-Age Child Continued
Prosodic Feature Development Children as old as 12 years are still acquiring some fundamentals of intonation