Chapter 5 Infancy Flashcards
Speech perception ability
ability to devote attention to the prosodic and phonetic regularities of speech
prosodic
referring to the frequency (pitch), duration (length), and intensity (loudness) of sounds. Combinations of prosodic characteristics produce distinguishable stress and intonation patterns that infants can detect to parse the speech stream.
stress
prominence placed on certain syllables of multisyllabic words.
intonation
the prominence placed on various parts of sentences.
You like sardines.
You like sardines?
switch design
test researchers do on infants involving object-sound pairing. After infant has been presented with an object-sound pairing, the reserchers change the sound in half the test trials. New sound is phonetically similar (bih/dih)
14 month old didn’t notice sound switch, 8month old did.
phonetic
phonemes or speech sounds and combinations of phonemes.
categorical perception
an ability that allows humans to catergorize speech in ways that highlight differences in meaning and ignore variations that are nonessential or not meningful in their language.
perceptual narrowing
the process by which infants start to focus more on perceptual differences that are relevant to them (such as the differences between two native phonemes) and focus less on perceptual differences that are not relevant to them or that they encouner less often (such as the difference between two nonnative phonemes).
phonotactic regularities
permissible combination of phonemes.
/ps/ as in maps is in a syllable-final position and not in syllable-initial position.
categorical
categorize input in ways that highlight differences in meaning.
voice onset time
the interval between the release of a stop consonant (p,b,t,d) and the onset of vocal cord vibrations.
perceptual categories
similar-appearing features including colors shape, texture, size, and so forth.
conceptual categories
what the object does.
Use inductive generalization about new objects without relying on perceptual similarity.
Real penguin vs toy penguin. They would know the real penguin can walk, the toy one can’t.
Early Voclization
stage model
(5 stages)
infants’ vocalizations as following an observable and sequential pattern.
- Reflexive (0-2months)
- Control of phonatiaion (1-4months)
- Expansion (3-8 months)
- Basic canonical syllables (5-10 months)
- Advanced forms (9-18 months)
hierachical structure of categories
Superordinate level- most general concepts. FURNITURE (highest) Basic- general concepts in a category TABLE, CHAIR, LAMP (center) Subordinate level- speecific concepts COFFEE TABLE, NIGHTSTAND CHAISE LOUNGE, DESK CHAIR DESK LAMP, FLOOR LAMB (highest)
FIG 5.3
Early volcalization
Stage model
Reflexive
0-2 months
crying and fussing (disconfort/distress)
burping, coughing and sneezing (vegetative)
lays the gourndwork for language
Early volcalization
Stage model
control of phonation
1-4 months cooing and gooing vowel like sounds raspberries vowel sounds consonant sounds far back in the oral cabity
Early volcalization
Stage model
expansion
3-8 months
gain more control over articulators
yell, squeal
MARGINAL BABBLING-consonang-like and vowel-lie sounds with prolonged transitions between the consonant and vowel sounds.