Term
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Definition
Reflexive Vocalizations
NonReflexive Vocalizations |
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Term
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Definition
| automatic responses reflecting physical state of infant |
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Term
| Nonreflexive Vocalizations |
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Definition
| contain some of the phonetic features found in adult languages |
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Term
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Definition
Stage 1*Birth-2months (phonation)
Stage 2* 2-4months (cooing & gooing)
Stage 3* 4-7months (vocal exploration)
Stage 4* 7-12months (canonical babbling)
Stage 5* 12mos-24mos (Jargon) |
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Term
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Definition
*First 6 mos: Vowel sounds predominate, most consonantal sounds are "back of throat"
*Onset of babbling, shift toward front consonants w/ frequent occurrences of m,b,d
*Between 6 & 12 months, sound repertoire expands
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Term
| Audition & Infant Vocalization |
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Definition
*Deaf Infants vocalize in the months after birth but productions do not conform to sequence of stages observed for hearing infants.
*Moderate to severe loss of hearing=failure to enter canonical babbling stage when expected
*After 8 mos, variety of consonants decreases with age
*High % of labial consonants (b,m) |
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Term
| Babble as Basis for Speech |
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Definition
*First words-period of canonical babble, 7-10mos babble & speech coexist
*Debate:
-Jakobson
-Current |
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Term
| Continuity from Babble to Speech |
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Definition
*Manner classes (stops,nasals,glides) occurring frequently are same in late babbling and early word productions
*CV syllable structure, characteristic of canonical babbling period,also most frequent syllabic type in early words |
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