Exam 2 Flashcards
(127 cards)
Infancy
birth-12 mos; understand some words, started comm w/ gestures & tone of voice; commonly produce first recognizable word
Infant capabilities that contribute to language development
infant speech perception
awareness of actions & intentions
category formation
early vocalizations
Infant speech perception
ability to attend to prosodic/ phonetic regularities of speech
Infant prosodic regularity - prosody
music of language; gives language its rhythm, timing and intensity level
3 features of prosody
loudness, pitch, duration
can be applied at word OR phase level
Ex: entrance (entry way) vs. entrance (in awe)
phonetic regularity
words that adhere to a regular letter/sound correspondence structure (84%) so we can sound them out
Categorical perception of speech
- categorical & continuous
- we categorize input in ways that highlight differences in meaning
- initially involves ‘speech’ vs. ‘nonspeech’ sounds
- then comes more complexity like voice vs. voiceless then allophones after that
Infancy awareness of actions & intentions
- sensitive to actions & movements
- spend longer time looking at movement than nonmovement
- focus is on INTENT of action
- over 1st year, they learn to see action as goal-directed
Why is the ability to understand that goals underly action important to language development?
- speech is a goal directed behavior
- babies can engage in purposeful communication by pointing, gesturing, & eventually speaking
Infant Category Formation
ability to categorize group items and/or events according to shared features (perceptual or conceptual)
perceptual features
- what object looks and/or feels like
- color, shape, size, etc
- ex: uses cat for dog, sheep, cow, or horse
conceptual features
- what objects do/mean
- roll bark, fly, etc
- ex: uses cat for any cotton/soft material
category formation hierarchy
- superordinate: generic category like fruit
- basic (learned first): general items in that category like apples and oranges
- subordinate: specific item within the basic group like honeycrisp or mandarin
Early Vocalizations
prelinguistic
- increases the behavior & sets stage for reciprocal give & take of social convo
- predictable pattern of development
Infant stages of Vocalization (STARK)
- reflexive
- control of phonation
- expansion
- basic canonical babbling
- advanced forms
Reflexive stage (STARK)
- 0-2 months
- sounds of discomfort/stress
- vegetative state (burp, cough, etc)
- no control over these sounds
- parents respond like it’s communication
Control of phonation stage (STARK)
- 1-4 mos
- cooing sounds
- vowel-like sounds
- might comine w/ consonant sound (uum)
- isolated consonant & nasal sounds
- raspberries, clicks
Expansion stage (STARK)
- 3-8 mos
- gain more control over articulators
- produce adult-like vowel sounds
- play w/ pitch & loudness (squeals)
- marginal babbling CV or VC sounds combos ( baa, maa, uum, etc)
Basic Canonical Babbling stage (STARK)
- 5-10 mos
- single CV syllables (ba, ga, etc)
- reduplicated babbling (ba-ba-ba)
- nonreduplicated /variegated babbling (da, ma, goo, etc)
- long sequences of vocalizations
Advanced forms stage (STARK)
- 9-18 mos
- begin producing diphthongs
- complex syllable forms (VC, CCV, VCV)
- jargon (meaning not conveyed)
Infant early foundations for language development
- Infant (Child) Directed Speech
- Joint reference & attention
- daily routines
- caregiver responsiveness
Infant (Child) Directed Speech
- motherese/baby talk
- higher pitch
- regular rhythm
- refer to objects in here & now
- long pauses
- slowed rate
- shorter utterances
- exaggerated facials
- simple sentences
- repetitions
- loudness variations
Purpose of IDS
attract infants’ attention
- research shows infants prefer IDS> adult directed speech
- aids in auditory processing of sounds, specifically vowels
- highlights content words (nouns & verbs)
Joint Reference attention
- rooted in social-interactionist theory
- adults assume infants’ interactions are meaningful
- researchers propose interactions are meaningful
- 3 phases
- adults support infants’ expressions @ each phase